Query: detection rule: Detects known malicious service installs that appear in cases in which a Cobalt Strike beacon elevates privileges or lat
Matching passage: Sigma rule: Detects known malicious service installs that appear in cases in which a Cobalt Strike beacon elevates privileges or lat. Logsource: windows / security. Rule: title: CobaltStrike Service Installations - Security id: d7a95147-145f-4678-b85d-d1ff4a3bb3f6 related: - id: 5a105d34-05fc-401e-8553-272b45c1522d type: derived status: test description: Detects known malicious service installs that appear in cases in which a Cobalt Strike beacon elevates privileges or lateral movement references: - https://www.sans.org/webcasts/119395 - https://www.crowdstrike.com/blog/getting-the-bacon-from-cobalt-strike-beacon/ - https://thedfirreport.com/2021/08/29/cobalt-strike-a-defenders-guide/ author: Florian Roth (Nextron Systems), Wojciech Lesicki date: 2021-05-26 modified: 2022-11-27 tags: - attack.persistence - attack.execution - attack.privilege-escalation - attack.lateral-movement - attack.t1021.002 - attack.t1543.003 - attack.t1569.002 logsource: product: windows service: security definition: The 'System Security Extension' audit subcategory need to be enabled to log the EID 4697 detection: event_id: EventID: 4697 selection1: ServiceFileName|contains|all: - ADMIN$ - .exe selection2: ServiceFileName|contains|all: - '%COMSPEC%' - start - powershell selection3: ServiceFileName|contains: powershell -nop -w hidden -encodedcommand selection4: ServiceFileName|base64offset|contains: 'IEX (New-Object Net.Webclient).DownloadString(''http://127.0.0.1:' condition: event_id and 1 of selection* falsepositives: - Unknown level: high
Near-miss passage: Sigma rule: Detects the use of various web request commands with commandline tools and Windows PowerShell cmdlets (including aliases. Logsource: windows / process_creation. Rule: title: Usage Of Web Request Commands And Cmdlets id: 9fc51a3c-81b3-4fa7-b35f-7c02cf10fd2d related: - id: 1139d2e2-84b1-4226-b445-354492eba8ba type: similar - id: f67dbfce-93bc-440d-86ad-a95ae8858c90 type: obsolete - id: cd5c8085-4070-4e22-908d-a5b3342deb74 type: obsolete - id: 6e897651-f157-4d8f-aaeb-df8151488385 type: obsolete status: test description: Detects the use of various web request commands with commandline tools and Windows PowerShell cmdlets (including aliases) via CommandLine references: - https://4sysops.com/archives/use-powershell-to-download-a-file-with-http-https-and-ftp/ - https://blog.jourdant.me/post/3-ways-to-download-files-with-powershell - https://learn.microsoft.com/en-us/powershell/module/bitstransfer/add-bitsfile?view=windowsserver2019-ps author: James Pemberton / @4A616D6573, Endgame, JHasenbusch, oscd.community, Austin Songer @austinsonger date: 2019-10-24 modified: 2025-10-20 tags: - attack.execution - attack.t1059.001 logsource: category: process_creation product: windows detection: selection: CommandLine|contains: - '[System.Net.WebRequest]::create' - 'curl ' - Invoke-RestMethod - Invoke-WebRequest - ' irm ' - 'iwr ' - Resume-BitsTransfer - Start-BitsTransfer - 'wget ' - WinHttp.WinHttpRequest condition: selection falsepositives: - Use of Get-Command and Get-Help modules to reference Invoke-WebRequest and Start-BitsTransfer. level: medium