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 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.process-*
- logs-endpoint.events.network-*
- winlogbeat-*
- logs-windows.sysmon_operational-*
Severity: medium
Risk score: 47
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:
- Domain: Endpoint
- OS: Windows
- Use Case: Threat Detection
- Tactic: Defense Evasion
- Data Source: Elastic Defend
- Data Source: Sysmon
Version: 207
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 host.os.type == "windows" and event.type == "start" and process.name : "installutil.exe"]
[network where host.os.type == "windows" and 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: System 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/