Suspicious Storm-2561 Fake Pulse VPN Persistence via RunOnce Key (via registry_set)

PremiumReviewedSigma · Medium · v1
Product
windows
Category
registry_set
Author
HuntRule
Published
2026-08-25
Updated
2026-08-28

ATT&CK techniques

Persistence → Priv Esc
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Defense Evasion

  6. Cred Access

  7. Discovery

  8. Lateral Movement

  9. Collection

  10. C2

  11. Exfiltration

  12. Impact

What it detects

This rule detects a RunOnce registry value configured to launch Pulse.exe, the persistence mechanism used by Storm-2561 after SEO-poisoned downloads deliver a fake Pulse Secure VPN installer. Adversaries use this autorun entry to relaunch the credential-stealing loader, so a RunOnce value pointing at Pulse.exe outside a genuine Pulse Secure deployment indicates the fake VPN foothold.

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Suspicious RunOnce Persistence Pointing to User AppData
Malicious FalseFont Backdoor Run Key Persistence from AppData (via registry_set)
Malicious Registry Run Key Persistence via AHealthDB by Stately Taurus
Suspicious Storm-2561 Fake Pulse VPN Persistence via RunOnce Key (via registry_set)
Pivot detection · T1547.001 · 9 related

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