Bypass UAC via Fodhelper.exe

calendar Oct 23, 2025 · attack.defense-evasion attack.privilege-escalation attack.t1548.002  ·
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Identifies use of Fodhelper.exe to bypass User Account Control. Adversaries use this technique to execute privileged processes.

Sigma rule (View on GitHub)

 1title: Bypass UAC via Fodhelper.exe
 2id: 7f741dcf-fc22-4759-87b4-9ae8376676a2
 3status: test
 4description: Identifies use of Fodhelper.exe to bypass User Account Control. Adversaries use this technique to execute privileged processes.
 5references:
 6    - https://eqllib.readthedocs.io/en/latest/analytics/e491ce22-792f-11e9-8f5c-d46d6d62a49e.html
 7    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1548.002/T1548.002.md
 8author: E.M. Anhaus (originally from Atomic Blue Detections, Tony Lambert), oscd.community
 9date: 2019-10-24
10modified: 2021-11-27
11tags:
12    - attack.defense-evasion
13    - attack.privilege-escalation
14    - attack.t1548.002
15logsource:
16    category: process_creation
17    product: windows
18detection:
19    selection:
20        ParentImage|endswith: '\fodhelper.exe'
21    condition: selection
22fields:
23    - ComputerName
24    - User
25    - CommandLine
26falsepositives:
27    - Legitimate use of fodhelper.exe utility by legitimate user
28level: high

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