Diskshadow Script Mode - Execution From Potential Suspicious Location

calendar Oct 28, 2023 · attack.execution attack.t1218  ·
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Detects execution of "Diskshadow.exe" in script mode using the "/s" flag where the script is located in a potentially suspicious location.

Sigma rule (View on GitHub)

 1title: Diskshadow Script Mode - Execution From Potential Suspicious Location
 2id: fa1a7e52-3d02-435b-81b8-00da14dd66c1
 3related:
 4    - id: 1dde5376-a648-492e-9e54-4241dd9b0c7f # Diskshadow Script Mode - Uncommon Script Extension Execution
 5      type: similar
 6    - id: 9f546b25-5f12-4c8d-8532-5893dcb1e4b8 # Potentially Suspicious Child Process Of DiskShadow.EXE
 7      type: similar
 8    - id: 56b1dde8-b274-435f-a73a-fb75eb81262a # Diskshadow Child Process Spawned
 9      type: similar
10    - id: 0c2f8629-7129-4a8a-9897-7e0768f13ff2 # Diskshadow Script Mode Execution
11      type: similar
12status: experimental
13description: Detects execution of "Diskshadow.exe" in script mode using the "/s" flag where the script is located in a potentially suspicious location.
14references:
15    - https://bohops.com/2018/03/26/diskshadow-the-return-of-vss-evasion-persistence-and-active-directory-database-extraction/
16    - https://www.ired.team/offensive-security/credential-access-and-credential-dumping/ntds.dit-enumeration
17    - https://medium.com/@cyberjyot/lolbin-execution-via-diskshadow-f6ff681a27a4
18    - https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/diskshadow
19    - https://www.lifars.com/wp-content/uploads/2022/01/GriefRansomware_Whitepaper-2.pdf
20    - https://www.zscaler.com/blogs/security-research/technical-analysis-crytox-ransomware
21    - https://research.checkpoint.com/2022/evilplayout-attack-against-irans-state-broadcaster/
22author: Nasreddine Bencherchali (Nextron Systems)
23date: 2023/09/15
24tags:
25    - attack.execution
26    - attack.t1218
27logsource:
28    category: process_creation
29    product: windows
30detection:
31    selection_img:
32        - OriginalFileName: 'diskshadow.exe'
33        - Image|endswith: '\diskshadow.exe'
34    selection_cli:
35        CommandLine|contains:
36            - '/s '
37            - '-s '
38    selection_paths:
39        CommandLine|contains:
40            # Note: Add additional susp paths based on your org needs
41            - ':\Temp\'
42            - ':\Windows\Temp\'
43            - '\AppData\Local\'
44            - '\AppData\Roaming\'
45            - '\ProgramData\'
46            - '\Users\Public\'
47    condition: all of selection_*
48falsepositives:
49    - False positives may occur if you execute the script from one of the paths mentioned in the rule. Apply additional filters that fits your org needs.
50level: medium

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