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Elastic Docs ›Elastic Security Solution [8.7] ›Detections and alerts ›Prebuilt rule reference

Potential Masquerading as VLC DLL

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Potential Masquerading as VLC DLL

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Identifies instances of VLC-related DLLs which are not signed by the original developer. Attackers may name their payload as legitimate applications to blend into the environment, or embedding its malicious code within legitimate applications to deceive machine learning algorithms by incorporating authentic and benign code.

Rule type: eql

Rule indices:

  • logs-endpoint.events.*

Severity: low

Risk score: 21

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References: None

Tags:

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

Version: 1

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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library where host.os.type == "windows" and event.action == "load" and
  dll.name : ("libvlc.dll", "libvlccore.dll", "axvlc.dll") and
  not (
    dll.code_signature.subject_name : ("VideoLAN", "716F2E5E-A03A-486B-BC67-9B18474B9D51")
    and dll.code_signature.trusted == true
  )

Framework: MITRE ATT&CKTM

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