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WebServer Access Logs Deleted

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WebServer Access Logs Deleted

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Identifies the deletion of WebServer access logs. This may indicate an attempt to evade detection or destroy forensic evidence on a system.

Rule type: eql

Rule indices:

auditbeat-*
winlogbeat-*
logs-endpoint.events.*
logs-windows.*

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: Linux
OS: Windows
OS: macOS
Use Case: Threat Detection
Tactic: Defense Evasion
Data Source: Elastic Defend

Version: 103

Rule authors:

Elastic

Rule license: Elastic License v2

Investigation guide

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Rule query

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file where event.type == "deletion" and
  file.path : ("C:\\inetpub\\logs\\LogFiles\\*.log",
               "/var/log/apache*/access.log",
               "/etc/httpd/logs/access_log",
               "/var/log/httpd/access_log",
               "/var/www/*/logs/access.log")

Framework: MITRE ATT&CK^TM

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/

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