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70 lines
2.9 KiB
YAML
70 lines
2.9 KiB
YAML
title: Impacket Lateralization Detection
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id: 10c14723-61c7-4c75-92ca-9af245723ad2
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status: experimental
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description: Detects wmiexec/dcomexec/atexec/smbexec from Impacket framework
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references:
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- https://github.com/SecureAuthCorp/impacket/blob/master/examples/wmiexec.py
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- https://github.com/SecureAuthCorp/impacket/blob/master/examples/atexec.py
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- https://github.com/SecureAuthCorp/impacket/blob/master/examples/smbexec.py
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- https://github.com/SecureAuthCorp/impacket/blob/master/examples/dcomexec.py
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author: Ecco, oscd.community, Jonhnathan Ribeiro
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date: 2019/09/03
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modified: 2020/09/01
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logsource:
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category: process_creation
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product: windows
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detection:
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selection_other:
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# *** wmiexec.py
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# parent is wmiprvse.exe
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# examples:
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# cmd.exe /Q /c whoami 1> \\127.0.0.1\ADMIN$\__1567439113.54 2>&1
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# cmd.exe /Q /c cd 1> \\127.0.0.1\ADMIN$\__1567439113.54 2>&1
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# *** dcomexec.py -object MMC20
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# parent is mmc.exe
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# example:
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# "C:\Windows\System32\cmd.exe" /Q /c cd 1> \\127.0.0.1\ADMIN$\__1567442499.05 2>&1
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# *** dcomexec.py -object ShellBrowserWindow
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# runs %SystemRoot%\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {c08afd90-f2a1-11d1-8455-00a0c91f3880} but parent command is explorer.exe
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# example:
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# "C:\Windows\System32\cmd.exe" /Q /c cd \ 1> \\127.0.0.1\ADMIN$\__1567520103.71 2>&1
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# *** smbexec.py
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# parent is services.exe
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# example:
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# C:\Windows\system32\cmd.exe /Q /c echo tasklist ^> \\127.0.0.1\C$\__output 2^>^&1 > C:\Windows\TEMP\execute.bat & C:\Windows\system32\cmd.exe /Q /c C:\Windows\TEMP\execute.bat & del C:\Windows\TEMP\execute.bat
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ParentImage|endswith:
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- '\wmiprvse.exe' # wmiexec
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- '\mmc.exe' # dcomexec MMC
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- '\explorer.exe' # dcomexec ShellBrowserWindow
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- '\services.exe' # smbexec
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CommandLine|contains|all:
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- 'cmd.exe'
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- '/Q'
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- '/c'
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- '\\\\127.0.0.1\'
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- '&1'
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selection_atexec:
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ParentCommandLine|contains:
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- 'svchost.exe -k netsvcs' # atexec on win10 (parent is "C:\Windows\system32\svchost.exe -k netsvcs")
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- 'taskeng.exe' # atexec on win7 (parent is "taskeng.exe {AFA79333-694C-4BEE-910E-E57D9A3518F6} S-1-5-18:NT AUTHORITY\System:Service:")
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# cmd.exe /C tasklist /m > C:\Windows\Temp\bAJrYQtL.tmp 2>&1
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CommandLine|contains|all:
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- 'cmd.exe'
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- '/C'
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- 'Windows\Temp\'
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- '&1'
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condition: (1 of selection_*)
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fields:
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- CommandLine
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- ParentCommandLine
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tags:
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- attack.execution
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- attack.t1047
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- attack.lateral_movement
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- attack.t1175 # an old one
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- attack.t1021.003
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- attack.t1021 # an old one
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falsepositives:
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- pentesters
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level: critical
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