Unsigned BITS Service Client Process

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Identifies an unsigned Windows Background Intelligent Transfer Service (BITS) client process. Attackers may abuse BITS functionality to download or upload data using the BITS service.

Rule type: eql

Rule indices:

  • logs-endpoint.events.library-*

Severity: low

Risk score: 21

Runs every: 60m

Searches indices from: now-119m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

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

Version: 3

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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library where dll.name : "Bitsproxy.dll" and process.executable != null and
not process.code_signature.trusted == true and
not process.code_signature.status : ("errorExpired", "errorCode_endpoint*")

Framework: MITRE ATT&CKTM