Uncommon Child Process Spawned From XBootMgrSleep.EXE

calendar Oct 2, 2026 · attack.stealth attack.t1202  ·
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Detects a process other than XBootMgr.exe spawned by XBootMgrSleep.exe. XBootMgrSleep.exe is a Microsoft-signed Windows Performance Toolkit binary that can execute an arbitrary executable after a delay.

Sigma rule (View on GitHub)

 1title: Uncommon Child Process Spawned From XBootMgrSleep.EXE
 2id: 74697c29-1b30-4e1f-a517-33574061821d
 3status: experimental
 4description: |
 5    Detects a process other than XBootMgr.exe spawned by XBootMgrSleep.exe.
 6    XBootMgrSleep.exe is a Microsoft-signed Windows Performance Toolkit binary that can execute an arbitrary executable after a delay.    
 7references:
 8    - https://lolbas-project.github.io/lolbas/OtherMSBinaries/XBootMgrSleep/
 9    - https://learn.microsoft.com/en-us/previous-versions/windows/desktop/xperf/reference
10author: Diablo Research
11date: 2026-09-27
12tags:
13    - attack.stealth
14    - attack.t1202
15logsource:
16    category: process_creation
17    product: windows
18detection:
19    selection:
20        ParentImage|endswith: '\xbootmgrsleep.exe'
21    filter_main_xbootmgr:
22        Image: 'C:\Program Files (x86)\Windows Kits\10\Windows Performance Toolkit\xbootmgr.exe'
23    condition: selection and not 1 of filter_main_*
24falsepositives:
25    - Custom Windows Performance Toolkit automation that intentionally launches another executable through XBootMgrSleep.exe
26level: medium

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