Suspicious WhatsAppBackup Data Staging Archive Creation

PremiumReviewedSigma · High · v1
Product
windows
Category
file_event
Author
HuntRule
Published
2026-06-10
Updated
2026-08-28

ATT&CK techniques

Collection → Exfiltration
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Cred Access

  9. Discovery

  10. Lateral Movement

  11. C2

  12. Impact

What it detects

This rule detects creation of a WhatsAppData.zip archive inside a WhatsAppBackup directory on the system drive. Silver Fox drops a Python stealer that collects victim data into this fixed staging path before exfiltration. A backup themed archive assembled at this hardcoded location signals collection ahead of data theft.

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Suspicious Command and Control via Discord or Telegram Bot API
Data Exfiltration to WebDAV Share via curl Upload
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Suspicious WhatsAppBackup Data Staging Archive Creation
Pivot detection · T1567.002 · 9 related

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