Potential Process Herpaderping Attempt

Identifies process execution followed by a file overwrite of an executable by the same parent process. This may indicate an evasion attempt to execute malicious code in a stealthy way.

Rule type: eql
Rule indices:

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

Rule Severity: high
Risk Score: 73
Runs every:
Searches indices from: now-9m
Maximum alerts per execution: 100
References:

• https://github.com/jxy-s/herpaderping

Tags:

• Domain: Endpoint
• OS: Windows
• Use Case: Threat Detection
• Tactic: Defense Evasion
• Data Source: Elastic Defend

Version: 105
Rule authors:

• Elastic

Rule license: Elastic License v2

sequence with maxspan=5s
   [process where host.os.type == "windows" and event.type == "start" and not process.parent.executable :
      (
         "?:\\Windows\\SoftwareDistribution\\*.exe",
         "?:\\Program Files\\Elastic\\Agent\\data\\*.exe",
         "?:\\Program Files (x86)\\Trend Micro\\*.exe"
      )
   ] by host.id, process.executable, process.parent.entity_id
   [file where host.os.type == "windows" and event.type == "change" and event.action == "overwrite" and file.extension == "exe"] by host.id, file.path, process.entity_id
		

Framework: MITRE ATT&CK

• Tactic:

  • Name: Defense Evasion
  • Id: TA0005
  • Reference URL: https://attack.mitre.org/tactics/TA0005/

• Technique:

  • Name: Masquerading
  • Id: T1036
  • Reference URL: https://attack.mitre.org/techniques/T1036/