Add Debugger Entry To AeDebug For Persistence

calendar Aug 17, 2023 · attack.persistence  ·
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Detects when an attacker adds a new "Debugger" value to the "AeDebug" key in order to achieve persistence which will get invoked when an application crashes

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 1title: Add Debugger Entry To AeDebug For Persistence
 2id: 092af964-4233-4373-b4ba-d86ea2890288
 3status: experimental
 4description: Detects when an attacker adds a new "Debugger" value to the "AeDebug" key in order to achieve persistence which will get invoked when an application crashes
 5references:
 6    - https://persistence-info.github.io/Data/aedebug.html
 7    - https://docs.microsoft.com/en-us/windows/win32/debug/configuring-automatic-debugging
 8author: Nasreddine Bencherchali (Nextron Systems)
 9date: 2022/07/21
10modified: 2023/08/17
11tags:
12    - attack.persistence
13logsource:
14    category: registry_set
15    product: windows
16detection:
17    selection:
18        TargetObject|contains: '\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AeDebug\Debugger'
19        Details|endswith: '.dll'
20    filter:
21        Details: '"C:\WINDOWS\system32\vsjitdebugger.exe" -p %ld -e %ld -j 0x%p'
22    condition: selection and not filter
23falsepositives:
24    - Legitimate use of the key to setup a debugger. Which is often the case on developers machines
25level: medium

References

  • AeDebug

    AeDebug Location: HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AeDebug Classification: Criteria Value Permissions Admin Security context User; System Persistence type Registry Code type EXE La...


    Read More

  • Configuring Automatic Debugging - Win32 apps

    Users can configure automatic debugging to help them determine why their system or an application has stopped responding.


    Read More

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