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InstallUtil Process Making Network Connections
editInstallUtil Process Making Network Connections
editIdentifies 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-*
- logs-windows.*
Severity: medium
Risk score: 21
Runs every: 5m
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References: None
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Defense Evasion
Version: 4
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
edit/* 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", "egress")]
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Signed Binary Proxy Execution
- ID: T1218
- Reference URL: https://attack.mitre.org/techniques/T1218/
-
Sub-technique:
- Name: InstallUtil
- ID: T1218.004
- Reference URL: https://attack.mitre.org/techniques/T1218/004/