github-actions[bot]
8734022722
chore: promote older rules status from experimental to test Co-authored-by: nasbench <nasbench@users.noreply.github.com>
57 lines
2.2 KiB
YAML
Executable File
57 lines
2.2 KiB
YAML
Executable File
title: Potential Credential Dumping Activity Via LSASS
|
|
id: 5ef9853e-4d0e-4a70-846f-a9ca37d876da
|
|
status: test
|
|
description: |
|
|
Detects process access requests to the LSASS process with specific call trace calls and access masks.
|
|
This behaviour is expressed by many credential dumping tools such as Mimikatz, NanoDump, Invoke-Mimikatz, Procdump and even the Taskmgr dumping feature.
|
|
references:
|
|
- https://web.archive.org/web/20230329170326/https://blog.menasec.net/2019/02/threat-hunting-21-procdump-or-taskmgr.html
|
|
- https://web.archive.org/web/20230208123920/https://cyberwardog.blogspot.com/2017/03/chronicles-of-threat-hunter-hunting-for_22.html
|
|
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1003.001/T1003.001.md
|
|
- https://research.splunk.com/endpoint/windows_possible_credential_dumping/
|
|
author: Samir Bousseaden, Michael Haag
|
|
date: 2019-04-03
|
|
modified: 2024-03-02
|
|
tags:
|
|
- attack.credential-access
|
|
- attack.t1003.001
|
|
- attack.s0002
|
|
logsource:
|
|
category: process_access
|
|
product: windows
|
|
detection:
|
|
selection:
|
|
TargetImage|endswith: '\lsass.exe'
|
|
GrantedAccess|contains:
|
|
- '0x1038'
|
|
- '0x1438'
|
|
- '0x143a'
|
|
- '0x1fffff' # Too many false positives
|
|
# - '0x01000' # Too many false positives
|
|
# - '0x1010' # Too many false positives
|
|
# - '0x1400' # Too many false positives
|
|
# - '0x1410' # Too many false positives
|
|
# - '0x40' # Too many false positives
|
|
CallTrace|contains:
|
|
- 'dbgcore.dll'
|
|
- 'dbghelp.dll'
|
|
- 'kernel32.dll'
|
|
- 'kernelbase.dll'
|
|
- 'ntdll.dll'
|
|
filter_main_system_user:
|
|
SourceUser|contains: # Covers many language settings
|
|
- 'AUTHORI'
|
|
- 'AUTORI'
|
|
filter_optional_thor:
|
|
CallTrace|contains|all:
|
|
- ':\Windows\Temp\asgard2-agent\'
|
|
- '\thor\thor64.exe+'
|
|
- '|UNKNOWN('
|
|
GrantedAccess: '0x103800'
|
|
filter_optional_sysmon:
|
|
SourceImage|endswith: ':\Windows\Sysmon64.exe'
|
|
condition: selection and not 1 of filter_main_* and not 1 of filter_optional_*
|
|
falsepositives:
|
|
- Unknown
|
|
level: medium
|