FoggyWeb Backdoor DLL Loading

 1title: FoggyWeb Backdoor DLL Loading
 2id: 640dc51c-7713-4faa-8a0e-e7c0d9d4654c
 3status: test
 4description: Detects DLL hijacking technique used by NOBELIUM in their FoggyWeb backdoor. Which loads a malicious version of the expected "version.dll" dll
 5references:
 6    - https://www.microsoft.com/security/blog/2021/09/27/foggyweb-targeted-nobelium-malware-leads-to-persistent-backdoor/
 7author: Florian Roth (Nextron Systems)
 8date: 2021-09-27
 9modified: 2022-12-09
10tags:
11    - attack.resource-development
12    - attack.t1587
13    - detection.emerging-threats
14logsource:
15    category: image_load
16    product: windows
17detection:
18    selection:
19        ImageLoaded: 'C:\Windows\ADFS\version.dll'
20    condition: selection
21falsepositives:
22    - Unlikely
23level: critical