IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
« Virtual Machine Fingerprinting Virtual Private Network Connection Attempt »
Elastic Docs ›Elastic Security Solution [8.4] ›Detections and alerts ›Prebuilt rule reference

Virtual Machine Fingerprinting via Grep

edit

Virtual Machine Fingerprinting via Grep

edit

An adversary may attempt to get detailed information about the operating system and hardware. This rule identifies common locations used to discover virtual machine hardware by a non-root user. This technique has been used by the Pupy RAT and other malware.

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

References:

Tags:

  • Elastic
  • Host
  • macOS
  • Linux
  • Threat Detection
  • Discovery

Version: 4 (version history)

Added (Elastic Stack release): 7.16.0

Last modified (Elastic Stack release): 8.4.0

Rule authors: Elastic

Rule license: Elastic License v2

Potential false positives

edit

Certain tools or automated software may enumerate hardware information. These tools can be exempted via user name or process arguments to eliminate potential noise.

Investigation guide

edit











Rule query
edit








process where event.type == "start" and process.name in ("grep",
"egrep") and user.id != "0" and process.args : ("parallels*",
"vmware*", "virtualbox*") and process.args : "Manufacturer*" and not
process.parent.executable in
("/Applications/Docker.app/Contents/MacOS/Docker",
"/usr/libexec/kcare/virt-what")











Threat mapping
edit




Framework: MITRE ATT&CKTM














Rule version history
edit










Version 4 (8.4.0 release)








    

  • 

    Updated query, changed from:
    

    

    

    process where event.type == "start" and process.name in ("grep",
"egrep") and user.id != "0" and process.args : ("parallels*",
"vmware*", "virtualbox*") and process.args : "Manufacturer*" and not
process.parent.executable in
("/Applications/Docker.app/Contents/MacOS/Docker",
"/usr/libexec/kcare/virt-what")
    

    

    • 









Version 2 (8.2.0 release)








    

  • 
Formatting only

    • 




















« Virtual Machine Fingerprinting


Virtual Private Network Connection Attempt »