title: Suspicious Use of Procdump on LSASS
author: Florian Roth
date: 2018/10/30
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.
detection:
  SELECTION_1:
    EventID: 1
  SELECTION_2:
    CommandLine: '* -ma *'
  SELECTION_3:
    EventID: 1
  SELECTION_4:
    CommandLine: '* lsass*'
  SELECTION_5:
    CommandLine: '* ls*'
  condition: (SELECTION_1 and SELECTION_2 and ((SELECTION_3 and SELECTION_4) or SELECTION_5))
falsepositives:
- Unlikely, because no one should dump an lsass process memory
- Another tool that uses the command line switches of Procdump
id: 5afee48e-67dd-4e03-a783-f74259dcf998
level: critical
logsource:
  category: process_creation
  product: windows
modified: 2021/02/02
references:
- Internal Research
status: experimental
tags:
- attack.defense_evasion
- attack.t1036
- attack.credential_access
- attack.t1003.001
- attack.t1003
- car.2013-05-009
ruletype: SIGMA