System Log File Deletion
editSystem Log File Deletion
editIdentifies the deletion of sensitive Linux system logs. This may indicate an attempt to evade detection or destroy forensic evidence on a system.
Rule type: eql
Rule indices:
- auditbeat-*
- logs-endpoint.events.*
- endgame-*
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:
Tags:
- Elastic
- Host
- Linux
- Threat Detection
- Defense Evasion
- Elastic Endgame
Version: 103
Rule authors:
- Elastic
Rule license: Elastic License v2
Investigation guide
editRule query
editfile where event.type == "deletion" and file.path : ( "/var/run/utmp", "/var/log/wtmp", "/var/log/btmp", "/var/log/lastlog", "/var/log/faillog", "/var/log/syslog", "/var/log/messages", "/var/log/secure", "/var/log/auth.log", "/var/log/boot.log", "/var/log/kern.log" ) and not process.name : ("gzip")
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Indicator Removal
- ID: T1070
- Reference URL: https://attack.mitre.org/techniques/T1070/
-
Sub-technique:
- Name: Clear Linux or Mac System Logs
- ID: T1070.002
- Reference URL: https://attack.mitre.org/techniques/T1070/002/