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34 lines
1.0 KiB
YAML
34 lines
1.0 KiB
YAML
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title: Silence.EDA detection
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status: experimental
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description: Detects Silence empireDNSagent
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author: Alina Stepchenkova, Group-IB, oscd.community
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date: 2019/11/01
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modified: 2019/11/20
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tags:
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- attack.g0091
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- attack.s0363
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logsource:
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product: windows
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service: powershell
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detection:
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empire:
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ScriptBlockText|contains|all: # better to randomise the order
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- 'System.Diagnostics.Process'
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- 'Stop-Computer'
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- 'Restart-Computer'
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- 'Exception in execution'
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- '$cmdargs'
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- 'Close-Dnscat2Tunnel'
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dnscat:
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ScriptBlockText|contains|all: # better to randomise the order
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- 'set type=$LookupType`nserver'
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- '$Command | nslookup 2>&1 | Out-String'
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- 'New-RandomDNSField'
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- '[Convert]::ToString($SYNOptions, 16)'
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- '$Session.Dead = $True'
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- '$Session["Driver"] -eq'
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condition: empire and dnscat
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falsepositives:
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- Unknown
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level: critical
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