Dumping of Sensitive Hives Via Reg.EXE

calendar Aug 12, 2024 · attack.credential-access attack.t1003.002 attack.t1003.004 attack.t1003.005 car.2013-07-001  ·
Share on: linkedin copy

Detects the usage of "reg.exe" in order to dump sensitive registry hives. This includes SAM, SYSTEM and SECURITY hives.

Sigma rule (View on GitHub)

 1title: Dumping of Sensitive Hives Via Reg.EXE
 2id: fd877b94-9bb5-4191-bb25-d79cbd93c167
 3related:
 4    - id: 038cd51c-3ad8-41c5-ba8f-5d1c92f3cc1e
 5      type: obsolete
 6    - id: 4d6c9da1-318b-4edf-bcea-b6c93fa98fd0
 7      type: obsolete
 8status: test
 9description: Detects the usage of "reg.exe" in order to dump sensitive registry hives. This includes SAM, SYSTEM and SECURITY hives.
10references:
11    - https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment
12    - https://eqllib.readthedocs.io/en/latest/analytics/aed95fc6-5e3f-49dc-8b35-06508613f979.html
13    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1003/T1003.md
14    - https://www.wietzebeukema.nl/blog/windows-command-line-obfuscation
15    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1003.002/T1003.002.md#atomic-test-1---registry-dump-of-sam-creds-and-secrets
16author: Teymur Kheirkhabarov, Endgame, JHasenbusch, Daniil Yugoslavskiy, oscd.community, frack113
17date: 2019-10-22
18modified: 2023-12-13
19tags:
20    - attack.credential-access
21    - attack.t1003.002
22    - attack.t1003.004
23    - attack.t1003.005
24    - car.2013-07-001
25logsource:
26    category: process_creation
27    product: windows
28detection:
29    selection_img:
30        - Image|endswith: '\reg.exe'
31        - OriginalFileName: 'reg.exe'
32    selection_cli_flag:
33        CommandLine|contains:
34            - ' save '
35            - ' export '
36            - ' ˢave '
37            - ' eˣport '
38    selection_cli_hklm:
39        CommandLine|contains:
40            - 'hklm'
41            - 'hk˪m'
42            - 'hkey_local_machine'
43            - 'hkey_˪ocal_machine'
44            - 'hkey_loca˪_machine'
45            - 'hkey_˪oca˪_machine'
46    selection_cli_hive:
47        CommandLine|contains:
48            - '\system'
49            - '\sam'
50            - '\security'
51            - '\ˢystem'
52            - '\syˢtem'
53            - '\ˢyˢtem'
54            - '\ˢam'
55            - '\ˢecurity'
56    condition: all of selection_*
57falsepositives:
58    - Dumping hives for legitimate purpouse i.e. backup or forensic investigation
59level: high

References

Related rules

to-top