IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Shadow File Read via Command Line Utilitiesedit
Identifies the manual reading of the /etc/shadow file via the commandline using standard system utilities. Threat actors will attempt to read this file, after elevating their privileges to root, in order to gain valid credentials they can utilize to move laterally undetected and access additional resources.
Rule type: eql
Rule indices:
- auditbeat-*
- logs-endpoint.events.*
Severity: medium
Risk score: 47
Runs every: 5 minutes
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
Tags:
- Elastic
- Host
- Linux
- Threat Detection
- Privilege Escalation
Version: 1
Added (Elastic Stack release): 8.5.0
Rule authors: Elastic
Rule license: Elastic License v2
Rule queryedit
process where event.type == "start" and event.action == "exec" and
user.name == "root" and process.args : "/etc/shadow" and not
process.executable: ("/usr/bin/find", "/usr/bin/cmp", "/bin/ls",
"/usr/sbin/restorecon", "/usr/bin/uniq") and not
process.parent.executable: "/bin/dracut"
Threat mappingedit
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Privilege Escalation
- ID: TA0004
- Reference URL: https://attack.mitre.org/tactics/TA0004/
-
Technique:
- Name: Exploitation for Privilege Escalation
- ID: T1068
- Reference URL: https://attack.mitre.org/techniques/T1068/