SigmaHQ/rules/windows/process_creation/win_susp_procdump_lsass.yml
2021-07-01 12:18:30 +05:45

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title: Suspicious Use of Procdump on LSASS
id: 5afee48e-67dd-4e03-a783-f74259dcf998
description: Detects suspicious uses of the SysInternals Procdump utility by using a special command line parameter in combination with the lsass.exe process. This way we're also able to catch cases in which the attacker has renamed the procdump executable.
status: experimental
references:
- Internal Research
author: Florian Roth
date: 2018/10/30
modified: 2021/02/02
tags:
- attack.defense_evasion
- attack.t1036
- attack.credential_access
- attack.t1003.001
- attack.t1003 # an old one
- car.2013-05-009
logsource:
category: process_creation
product: windows
detection:
selection1:
CommandLine|contains: ' -ma '
selection2:
CommandLine|contains: ' lsass'
selection3:
CommandLine|contains|all:
- ' -ma '
- ' ls'
condition: ( selection1 and selection2 ) or selection3
falsepositives:
- Unlikely, because no one should dump an lsass process memory
- Another tool that uses the command line switches of Procdump
level: critical