Unusual Linux System Information Discovery Activityedit
Looks for commands related to system information discovery from an unusual user context. This can be due to uncommon troubleshooting activity or due to a compromised account. A compromised account may be used to engage in system information discovery in order to gather detailed information about system configuration and software versions. This may be a precursor to selection of a persistence mechanism or a method of privilege elevation.
Rule type: machine_learning
Machine learning job: v3_linux_system_information_discovery
Machine learning anomaly threshold: 75
Severity: low
Risk score: 21
Runs every: 15 minutes
Searches indices from: now-45m (Date Math format, see also Additional look-back time
)
Maximum alerts per execution: 100
Tags:
- Elastic
- Host
- Linux
- Threat Detection
- ML
Version: 3 (version history)
Added (Elastic Stack release): 7.10.0
Last modified (Elastic Stack release): 8.3.0
Rule authors: Elastic
Rule license: Elastic License v2
Potential false positivesedit
Uncommon user command activity can be due to an engineer logging onto a server instance in order to perform manual troubleshooting or reconfiguration. ==== Threat mapping
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Discovery
- ID: TA0007
- Reference URL: https://attack.mitre.org/tactics/TA0007/
-
Technique:
- Name: System Information Discovery
- ID: T1082
- Reference URL: https://attack.mitre.org/techniques/T1082/
Rule version historyedit
- Version 3 (8.3.0 release)
-
- Formatting only
- Version 2 (7.12.0 release)
-
- Formatting only