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CNCMachineRMS RAT via ClickFix: Detection & IOCs

A fake CAPTCHA lure side-loads the CNCMachineRMS RAT, which reaches C2 over TCP 443: 29 IOCs, 9 detection rules and a free Splunk SPL rule.

Read the full threat intel for CNCMachineRMS RAT via ClickFix: Detection & IOCs →

Chapters

  1. 0:00The hookFake CAPTCHA drops a RAT: 18 techniques.
  2. 0:04The storyVictims paste a command into Run.
  3. 0:11Attack pathThe command fetches an HTA file.
  4. 0:25AttributionAttributed to SmartApeSG.
  5. 0:30Indicators of compromise25 indicators to hunt: 5 IPs, 4 domains and 3 URLs, and more.
  6. 0:37MITRE ATT&CK techniques18 ATT&CK techniques, from execution to command and control.
  7. 0:43Remediation8 remediation steps are listed, 3 of them immediate.
  8. 0:50Detection rules9 detection rules, in SPL, KQL and Sigma.
Transcript

0:00Fake CAPTCHA drops a RAT: 18 techniques.

0:05Victims paste a command into Run.

0:07LevelBlue tracks the chain as BabaDeda.

0:11The command fetches an HTA file.

0:13It downloads a zip disguised as PDF.

0:16The archive side-loads the RAT.

0:19Beacons go to the command server over non-TLS traffic.

0:26Attributed to SmartApeSG. Confidence: low.

0:3125 indicators to hunt: 5 IPs, 4 domains and 3 URLs, and more.

0:3818 ATT&CK techniques, from execution to command and control.

0:438 remediation steps are listed, 3 of them immediate.

0:519 detection rules, in SPL, KQL and Sigma.

0:56Threadlinqs. The unified security engineering platform.