DustInDark
0cfa806baf
* added ruletype to SIGMA rule #230 * added ruletype to SIGMA rule converter tool #231
53 lines
1.6 KiB
YAML
53 lines
1.6 KiB
YAML
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title: CobaltStrike Service Installations
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author: Florian Roth, Wojciech Lesicki
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date: 2021/05/26
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description: Detects known malicious service installs that appear in cases in which
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a Cobalt Strike beacon elevates privileges or lateral movement
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detection:
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SELECTION_1:
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EventID: 4697
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SELECTION_2:
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ServiceFileName: '*ADMIN$*'
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SELECTION_3:
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ServiceFileName: '*.exe*'
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SELECTION_4:
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ServiceFileName: '*%COMSPEC%*'
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SELECTION_5:
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ServiceFileName: '*start*'
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SELECTION_6:
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ServiceFileName: '*powershell*'
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SELECTION_7:
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ServiceFileName: '*powershell -nop -w hidden -encodedcommand*'
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SELECTION_8:
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ServiceFileName:
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- '*SUVYIChOZXctT2JqZWN0IE5ldC5XZWJjbGllbnQpLkRvd25sb2FkU3RyaW5nKCdodHRwOi8vMTI3LjAuMC4xO*'
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- '*lFWCAoTmV3LU9iamVjdCBOZXQuV2ViY2xpZW50KS5Eb3dubG9hZFN0cmluZygnaHR0cDovLzEyNy4wLjAuMT*'
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- '*JRVggKE5ldy1PYmplY3QgTmV0LldlYmNsaWVudCkuRG93bmxvYWRTdHJpbmcoJ2h0dHA6Ly8xMjcuMC4wLjE6*'
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condition: (SELECTION_1 and ((SELECTION_2 and SELECTION_3) or (SELECTION_4 and SELECTION_5
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and SELECTION_6) or SELECTION_7 or SELECTION_8))
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falsepositives:
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- Unknown
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id: d7a95147-145f-4678-b85d-d1ff4a3bb3f6
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level: critical
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logsource:
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product: windows
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service: security
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modified: 2021/09/21
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references:
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- https://www.sans.org/webcasts/119395
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- https://www.crowdstrike.com/blog/getting-the-bacon-from-cobalt-strike-beacon/
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- https://thedfirreport.com/2021/08/29/cobalt-strike-a-defenders-guide/
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related:
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- id: 5a105d34-05fc-401e-8553-272b45c1522d
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type: derived
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status: experimental
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tags:
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- attack.execution
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- attack.privilege_escalation
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- attack.lateral_movement
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- attack.t1021.002
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- attack.t1543.003
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- attack.t1569.002
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ruletype: SIGMA
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