Abnormal LSASS Child and Parent Process Relationships

 1title: Abnormal LSASS Child and Parent Process Relationships
 2id: 67ba1ddd-4510-42d5-aa78-83bed66bd684
 3status: experimental
 4description: Detects potential lsass.exe abuse based on unusual and suspicious parent-child
 5    relationships. Inspired by the 2022 Red Canary Threat Detection report.
 6references:
 7    - https://redcanary.com/threat-detection-report/techniques/lsass-memory/
 8author: Micah Babinski
 9date: 2022/11/03
10tags:
11    - attack.credential_access
12    - attack.t1003.001
13logsource:
14    category: process_creation
15    product: windows
16detection:
17    selection1:
18        Image|endswith:
19            - '\cmd.exe'
20            - '\powershell.exe'
21            - '\regsvr32.exe'
22            - '\mstsc.exe'
23            - '\dllhost.exe'
24        ParentImage|endswith: \lsass.exe'
25    selection2:
26        Image|endswith: '\lsass.exe'
27        ParentImage|endswith:
28            - '\explorer.exe'
29            - '\cmd.exe'
30            - '\lsass.exe'
31    condition: selection1 or selection2
32falsepositives:
33    - Unknown
34level: medium```