Suspicious Proxyware Download to Hidden Tmp Path on Linux

PremiumReviewedSigma · High · v1
Product
linux
Category
process_creation
Author
HuntRule
Published
2026-05-23
Updated
2026-08-28

ATT&CK techniques

C2
  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. Collection

  12. Exfiltration

  13. Impact

What it detects

This rule detects wget fetching a payload into the hidden /tmp/logs/.config/whatchdog location used to stage residential proxyware on compromised Linux hosts. Downloading an executable into a concealed tmp directory is a strong indicator of proxyware staging.

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Suspicious Payload Download from Filebin via wget (via process_creation)
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Suspicious Proxyware Download to Hidden Tmp Path on Linux
Pivot detection · T1105 · 9 related

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