Malicious DNS Query To ClickFix Infostealer C2 Domain

PremiumReviewedSigma · High · v1
Category
dns_query
Author
HuntRule
Published
2026-07-24
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 DNS resolution of apposx.com, the fake Cloudflare verification and staging domain used in the ClickFix infostealer campaign. The domain fronts the social-engineering lure that leads macOS users to install the Odyssey and ACR stealers. Alerting on the hardcoded C2 domain surfaces hosts that reached the delivery infrastructure regardless of the payload used.

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Malicious DNS Query To ClickFix Infostealer C2 Domain
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.