Lolbin Unregmp2.exe Use As Proxy

calendar Jun 25, 2024 · attack.defense_evasion attack.t1218  ·
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Detect usage of the "unregmp2.exe" binary as a proxy to launch a custom version of "wmpnscfg.exe"

Sigma rule (View on GitHub)

 1title: Lolbin Unregmp2.exe Use As Proxy
 2id: 727454c0-d851-48b0-8b89-385611ab0704
 3status: test
 4description: Detect usage of the "unregmp2.exe" binary as a proxy to launch a custom version of "wmpnscfg.exe"
 5references:
 6    - https://lolbas-project.github.io/lolbas/Binaries/Unregmp2/
 7author: frack113
 8date: 2022/12/29
 9modified: 2024/06/04
10tags:
11    - attack.defense_evasion
12    - attack.t1218
13logsource:
14    category: process_creation
15    product: windows
16detection:
17    selection_img:
18        - Image|endswith: '\unregmp2.exe'
19        - OriginalFileName: 'unregmp2.exe'
20    selection_cmd:
21        CommandLine|contains|windash: ' /HideWMP'
22    condition: all of selection_*
23falsepositives:
24    - Unknown
25level: medium

References

  • Unregmp2 | LOLBAS

    Allows an attacker to copy a target binary to a controlled directory and modify the 'ProgramW6432' environment variable to point to that controlled directory, then execute 'unregmp2.exe' with argum...


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