IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
InstallUtil Process Making Network Connectionsedit
Identifies InstallUtil.exe making outbound network connections. This may indicate adversarial activity as InstallUtil is often leveraged by adversaries to execute code and evade detection.
Rule type: eql
Rule indices:
- logs-endpoint.events.*
- winlogbeat-*
Severity: medium
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
- Host
- Windows
- Threat Detection
- Defense Evasion
Version: 1
Added (Elastic Stack release): 7.10.0
Rule authors: Elastic
Rule license: Elastic License
Rule queryedit
/* the benefit of doing this as an eql sequence vs kql is this will limit to alerting only on the first network connection */ sequence by process.entity_id [process where event.type in ("start", "process_started") and process.name : "installutil.exe"] [network where process.name : "installutil.exe" and network.direction == "outgoing"]
Threat mappingedit
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: InstallUtil
- ID: T1118
- Reference URL: https://attack.mitre.org/techniques/T1118/