Agent Tesla Persistence via Realtek Named Scheduled Task Batch

PremiumReviewedSigma · High · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-09-08
Updated
2026-09-08

ATT&CK techniques

Execution → Defense Evasion
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Defense Evasion

  5. Cred Access

  6. Discovery

  7. Lateral Movement

  8. Collection

  9. C2

  10. Exfiltration

  11. Impact

What it detects

This rule detects execution of a batch file named RealtekCodec that masquerades as an audio helper and is launched minimized from a scheduled task. This persistence method runs the Agent Tesla loader at user logon.

Related detections9 linkedT1053.005 — drag to rearrange
Malicious Scheduled Task Masquerading as Auto Update via schtasks (via process_creation)
Suspicious AdInsight Execution from ProgramData via Scheduled Task by WikiLoader
Suspicious Scheduled Task Creation Referencing dllFake Batch Scripts (via process_creation)
Suspicious Scheduled Task Creation With WebDAV Loader Task Names (via process_creation)
Suspicious Scheduled Task Creation with ClickFix Update Recon Name (via process_creation)
Suspicious Cobalt Strike OCSP Malleable C2 Profile Traffic
Suspicious Spoofed Microsoft Host Header C2 by Stately Taurus
Malicious Scheduled Task Named Gentlemen via Schtasks
Malicious Scheduled Task Masquerading as Defender NisSrv via Schtasks
Agent Tesla Persistence via Realtek Named Scheduled Task Batch
Pivot detection · T1053.005 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.