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Elastic Docs ›Elastic Security Solution [8.16] ›Detections and alerts ›Prebuilt rule reference

Virtual Machine Fingerprinting via Grep

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Virtual Machine Fingerprinting via Grep

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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: 100 (version history)

Added (Elastic Stack release): 7.16.0

Last modified (Elastic Stack release): 8.5.0

Rule authors: Elastic

Rule license: Elastic License v2

Potential false positives

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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

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Rule query
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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
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Framework: MITRE ATT&CKTM














Rule version history
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Version 100 (8.5.0 release)








    

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Formatting only

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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

    • 




















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