The SIEM app is now a part of the Elastic Security solution.
Click
here to view SIEM documentation for previous releases.
Network Connection via Certutiledit
Identifies certutil.exe making a network connection. Adversaries could abuse
certutil.exe to download a certificate or malware from a remote URL.
Rule type: query
Rule indices:
- winlogbeat-*
- logs-endpoint.events.*
Severity: low
Risk score: 21
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
- Windows
Version: 3 (version history)
Added (Elastic Stack release): 7.7.0
Last modified (Elastic Stack release): 7.9.1
Rule authors: Elastic
Rule license: Elastic License
Rule queryedit
event.category:network and event.type:connection and process.name:certutil.exe and not destination.ip:(10.0.0.0/8 or 172.16.0.0/12 or 192.168.0.0/16)
Threat mappingedit
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Command and Control
- ID: TA0011
- Reference URL: https://attack.mitre.org/tactics/TA0011/
-
Technique:
- Name: Remote File Copy
- ID: T1105
- Reference URL: https://attack.mitre.org/techniques/T1105/
Rule version historyedit
- Version 3 (7.9.1 release)
-
- Formatting only
- Version 2 (7.9.0 release)
-
-
Updated query, changed from:
process.name:certutil.exe and event.action:"Network connection detected (rule: NetworkConnect)" and not destination.ip:(10.0.0.0/8 or 172.16.0.0/12 or 192.168.0.0/16)
-