Service Security Descriptor Tampering Via Sc.EXE
Detection of sc.exe utility adding a new service with special permission which hides that service.
Sigma rule (View on GitHub)
1title: Service Security Descriptor Tampering Via Sc.EXE
2id: 98c5aeef-32d5-492f-b174-64a691896d25
3related:
4 - id: 99cf1e02-00fb-4c0d-8375-563f978dfd37 # Deny Service Access
5 type: similar
6 - id: a537cfc3-4297-4789-92b5-345bfd845ad0 # Specific Technique
7 type: similar
8status: test
9description: Detection of sc.exe utility adding a new service with special permission which hides that service.
10references:
11 - https://blog.talosintelligence.com/2021/10/threat-hunting-in-large-datasets-by.html
12 - https://www.sans.org/blog/red-team-tactics-hiding-windows-services/
13 - https://twitter.com/Alh4zr3d/status/1580925761996828672
14 - https://twitter.com/0gtweet/status/1628720819537936386
15 - https://itconnect.uw.edu/tools-services-support/it-systems-infrastructure/msinf/other-help/understanding-sddl-syntax/
16author: Nasreddine Bencherchali (Nextron Systems)
17date: 2023-02-28
18tags:
19 - attack.persistence
20 - attack.defense-evasion
21 - attack.privilege-escalation
22 - attack.t1574.011
23logsource:
24 category: process_creation
25 product: windows
26detection:
27 selection_img:
28 - Image|endswith: '\sc.exe'
29 - OriginalFileName: 'sc.exe'
30 selection_cli:
31 CommandLine|contains: 'sdset'
32 condition: all of selection_*
33falsepositives:
34 - Unknown
35level: medium
References
-
By Tiago Pereira. * Security tools can produce very large amounts of data that even the most sophisticated organizations may struggle to manage. * Big data processing tools, such as spark, can be a powerful tool in the arsenal of security teams. * This post walks through threat hunting on large datasets by
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Blog Offensive Operations, Pen Testing, and Red Teaming, Penetration Testing and Red Teaming October 4, 2023 SEC670 Prep Quiz Answers Answers for the SEC670 Prep Quiz. For more details about the co...
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What follows is an appendix which pieces together several disparate Microsoft documents on the SDDL syntax. The SDDL syntax is important if you do coding of directory security or manually edit a...
Read More
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