detect_crackmapexec_mimikatz_module_footprint_on_a_victim_machine


Description

This rule detects crackmapexec Mimikatz module obfuscated powershell activity on a victim endpoint License: https://github.com/Neo23x0/sigma/blob/master/LICENSE.Detection.Rules.md.

Query · yara_l

events:
((re.regex($selection.target.process.file.full_path, `.*\\powershell\.exe`) or re.regex($selection.target.process.file.full_path, `.*\\cmd\.exe`)) and (re.regex($selection.target.process.command_line, `.*91,78,101,116.*`) or re.regex($selection.target.process.command_line, `.*91t78v101v116.*`) or re.regex($selection.target.process.command_line, `.*91,78@101@116.*`) or re.regex($selection.target.process.command_line, `.*91 ,78 ,101, 116 , 46 , 83.*`)))

  condition:
    $selection
Raw source detect_crackmapexec_mimikatz_module_footprint_on_a_victim_machine · YARA-L
Esc
Published by chronicle/detection-rules ↗, licensed under Apache 2.0 ↗. Reproduced here unmodified.
rule detect_crackmapexec_mimikatz_module_footprint_on_a_victim_machine {
 meta:
    author = "Joseph Kamau"
    description = "This rule detects crackmapexec Mimikatz module obfuscated powershell activity on a victim endpoint  License: https://github.com/Neo23x0/sigma/blob/master/LICENSE.Detection.Rules.md."
    reference = "https://tdm.socprime.com/tdm/info/05G2LOW8X5VP"
    version = "0.01"
    created = "2021-03-09"
    product = "Windows"
    service = "sysmon"
    mitre = "credential_dumping, t1003, powershell, t1086"

  events:
((re.regex($selection.target.process.file.full_path, `.*\\powershell\.exe`) or re.regex($selection.target.process.file.full_path, `.*\\cmd\.exe`)) and (re.regex($selection.target.process.command_line, `.*91,78,101,116.*`) or re.regex($selection.target.process.command_line, `.*91t78v101v116.*`) or re.regex($selection.target.process.command_line, `.*91,78@101@116.*`) or re.regex($selection.target.process.command_line, `.*91 ,78 ,101, 116 , 46 , 83.*`)))

  condition:
    $selection
}

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