Persistence via TelemetryController Scheduled Task Hijack

Elastic Stack Serverless Security

Detects the successful hijack of Microsoft Compatibility Appraiser scheduled task to establish persistence with an integrity level of system.

Rule type: eql

Rule indices:

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

Severity: high

Risk score: 73

Runs every: 5m

Searches indices from: now-9m (https://www.elastic.co/guide/en/elasticsearch/reference/current/common-options.html#date-math[Date Math format], see also Additional look-back time)

Maximum alerts per execution: 100

References:

• https://www.trustedsec.com/blog/abusing-windows-telemetry-for-persistence/?utm_content=131234033&utm_medium=social&utm_source=twitter&hss_channel=tw-403811306

Tags:

• Elastic
• Host
• Windows
• Threat Detection
• Persistence

Version: 101

Rule authors:

• Elastic

Rule license: Elastic License v2

process where event.type == "start" and
  process.parent.name : "CompatTelRunner.exe" and process.args : "-cv*" and
  not process.name : ("conhost.exe",
                      "DeviceCensus.exe",
                      "CompatTelRunner.exe",
                      "DismHost.exe",
                      "rundll32.exe",
                      "powershell.exe")

Framework: MITRE ATT&CKTM

• Tactic:

  • Name: Persistence
  • ID: TA0003
  • Reference URL: https://attack.mitre.org/tactics/TA0003/

• Technique:

  • Name: Scheduled Task/Job
  • ID: T1053
  • Reference URL: https://attack.mitre.org/techniques/T1053/

• Sub-technique:

  • Name: Scheduled Task
  • ID: T1053.005
  • Reference URL: https://attack.mitre.org/techniques/T1053/005/