60 lines
1.6 KiB
YAML
60 lines
1.6 KiB
YAML
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title: UNC2452 Process Creation Patterns
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ruletype: Sigma
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author: Florian Roth
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date: 2021/01/22
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description: Detects a specific process creation patterns as seen used by UNC2452
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and provided by Microsoft as Microsoft Defender ATP queries
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detection:
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SELECTION_1:
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EventID: 1
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SELECTION_10:
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CommandLine: '*cmd.exe /C *'
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SELECTION_11:
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CommandLine: '*rundll32 c:\windows\\*'
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SELECTION_12:
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CommandLine: '*.dll *'
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SELECTION_13:
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ParentImage: '*\rundll32.exe'
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SELECTION_14:
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Image: '*\dllhost.exe'
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SELECTION_15:
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CommandLine:
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- ' '
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- ''
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SELECTION_2:
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CommandLine:
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- '*7z.exe a -v500m -mx9 -r0 -p*'
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SELECTION_3:
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ParentCommandLine: '*wscript.exe*'
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SELECTION_4:
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ParentCommandLine: '*.vbs*'
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SELECTION_5:
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CommandLine: '*rundll32.exe*'
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SELECTION_6:
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CommandLine: '*C:\Windows*'
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SELECTION_7:
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CommandLine: '*.dll,Tk_*'
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SELECTION_8:
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ParentImage: '*\rundll32.exe'
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SELECTION_9:
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ParentCommandLine: '*C:\Windows*'
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condition: (SELECTION_1 and ((((SELECTION_2 or (SELECTION_3 and SELECTION_4 and
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SELECTION_5 and SELECTION_6 and SELECTION_7)) or (SELECTION_8 and SELECTION_9
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and SELECTION_10)) or (SELECTION_11 and SELECTION_12)) or ((SELECTION_13 and SELECTION_14)
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and not (SELECTION_15))))
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falsepositives:
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- Unknown
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id: 9be34ad0-b6a7-4fbd-91cf-fc7ec1047f5f
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level: critical
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logsource:
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category: process_creation
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product: windows
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modified: 2021/06/27
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references:
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- https://www.microsoft.com/security/blog/2021/01/20/deep-dive-into-the-solorigate-second-stage-activation-from-sunburst-to-teardrop-and-raindrop/
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status: experimental
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tags:
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- attack.execution
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- attack.t1059.001
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