Installation of Custom Shim Databasesedit
Identifies the installation of custom Application Compatibility Shim databases. This Windows functionality has been abused by attackers to stealthily gain persistence and arbitrary code execution in legitimate Windows processes.
Rule type: eql
Rule indices:
- logs-endpoint.events.*
- winlogbeat-*
- 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: 101 (version history)
Added (Elastic Stack release): 7.10.0
Last modified (Elastic Stack release): 8.5.0
Rule authors: Elastic
Rule license: Elastic License v2
Rule queryedit
sequence by process.entity_id with maxspan = 5m [process where
event.type == "start" and not (process.name : "sdbinst.exe" and
process.parent.name : "msiexec.exe")] [registry where event.type in
("creation", "change") and registry.path :
"HKLM\\SOFTWARE\\Microsoft\\Windows
NT\\CurrentVersion\\AppCompatFlags\\Custom\\*.sdb"]
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 101 (8.5.0 release)
-
-
Updated query, changed from:
sequence by process.entity_id with maxspan = 5m [process where event.type in ("start", "process_started") and not (process.name : "sdbinst.exe" and process.parent.name : "msiexec.exe")] [registry where event.type in ("creation", "change") and registry.path : "HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\AppCompatFlags\\Custom\\*.sdb"]
-
- Version 4 (8.4.0 release)
-
- Formatting only
- Version 3 (7.12.0 release)
-
-
Updated query, changed from:
sequence by process.entity_id with maxspan=5m [process where event.type in ("start", "process_started") and not (process.name : "sdbinst.exe" and process.parent.name : "msiexec.exe")] [registry where event.type in ("creation", "change") and wildcard(registry.path, "HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\AppCompatFlags\\Custom\\*.sdb")]
-
- Version 2 (7.11.0 release)
-
- Formatting only