Malicious Kimsuky Scheduled Task Persistence via ChromeCheck and EdgeCheck (via process_creation)

PremiumReviewedSigma · High · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-10-10
Updated
2026-10-10

ATT&CK techniques

Execution → Priv Esc
  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 schtasks.exe creating a minute interval task named ChromeCheck or EdgeCheck, browser themed names Kimsuky uses to disguise persistence for its PebbleDash based tooling. The frequent task keeps the implant resident and blends with browser maintenance. Detecting these task names surfaces persistence tied to the campaign.

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Malicious Tusk Persistence via FJ_load Scheduled Task
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Possible SocGholish Update Task Running Batch File at Highest Privileges (via process_creation)
Malicious Kimsuky Scheduled Task Persistence via ChromeCheck and EdgeCheck (via process_creation)
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.