Registry Persistence via AppInit DLLedit
Attackers may maintain persistence by creating registry keys using AppInit DLLs. AppInit DLLs are loaded by every process using the common library, user32.dll.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-endpoint.events.*
- logs-windows.*
Severity: medium
Risk score: 47
Runs every: 5 minutes
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Persistence
Version: 100 (version history)
Added (Elastic Stack release): 7.11.0
Last modified (Elastic Stack release): 8.5.0
Rule authors: Elastic
Rule license: Elastic License v2
Investigation guideedit
Rule queryedit
registry where registry.path : ("HKLM\\SOFTWARE\\Microsoft\\Windows
NT\\CurrentVersion\\Windows\\AppInit_Dlls",
"HKLM\\SOFTWARE\\Wow6432Node\\Microsoft\\Windows
NT\\CurrentVersion\\Windows\\AppInit_Dlls") and not
process.executable : ("C:\\Windows\\System32\\msiexec.exe",
"C:\\Windows\\SysWOW64\\msiexec.exe",
"C:\\Program Files\\Commvault\\ContentStore*\\Base\\cvd.exe",
"C:\\Program Files (x86)\\Commvault\\ContentStore*\\Base\\cvd.exe")
Threat mappingedit
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Persistence
- ID: TA0003
- Reference URL: https://attack.mitre.org/tactics/TA0003/
-
Technique:
- Name: Event Triggered Execution
- ID: T1546
- Reference URL: https://attack.mitre.org/techniques/T1546/
Rule version historyedit
- Version 100 (8.5.0 release)
-
- Formatting only
- Version 6 (8.4.0 release)
-
-
Updated query, changed from:
registry where registry.path : ("HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Windows\\AppInit_Dlls", "HKLM\\SOFTWARE\\Wow6432Node\\Microsoft\\Windows NT\\CurrentVersion\\Windows\\AppInit_Dlls") and not process.executable : ("C:\\Windows\\System32\\msiexec.exe", "C:\\Windows\\SysWOW64\\msiexec.exe", "C:\\Program Files\\Commvault\\ContentStore*\\Base\\cvd.exe", "C:\\Program Files (x86)\\Commvault\\ContentStore*\\Base\\cvd.exe")
-
- Version 4 (8.2.0 release)
-
- Formatting only
- Version 3 (7.12.0 release)
-
- Formatting only
- Version 2 (7.11.2 release)
-
- Formatting only