Credential Access via TruffleHog Execution

This rule detects the execution of TruffleHog, a tool used to search for high-entropy strings and secrets in code repositories, which may indicate an attempt to access credentials. This tool was abused by the Shai-Hulud worm to search for credentials in code repositories.

Rule type: eql
Rule indices:

• logs-endpoint.events.process-*

Rule Severity: low
Risk Score: 21
Runs every:
Searches indices from: now-9m
Maximum alerts per execution: ?
References:

• https://www.elastic.co/blog/shai-hulud-worm-npm-supply-chain-compromise

Tags:

• Domain: Endpoint
• OS: Linux
• OS: Windows
• OS: macOS
• Use Case: Threat Detection
• Tactic: Credential Access
• Data Source: Elastic Defend

Version: ?
Rule authors:

• Elastic

Rule license: Elastic License v2

process where event.type == "start" and process.name : ("trufflehog.exe", "trufflehog") and
process.args == "--results=verified" and process.args == "--json" and process.args == "filesystem"
		

Framework: MITRE ATT&CK

• Tactic:

  • Name: Credential Access
  • Id: TA0006
  • Reference URL: https://attack.mitre.org/tactics/TA0006/

• Technique:

  • Name: OS Credential Dumping
  • Id: T1003
  • Reference URL: https://attack.mitre.org/techniques/T1003/

• Technique:

  • Name: Credentials from Password Stores
  • Id: T1555
  • Reference URL: https://attack.mitre.org/techniques/T1555/