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Gootloader Takedown in Operation Endgame: Detection & IOCs

Operation Endgame removed Gootloader from over 100 servers. Its 9 detection rules, 26 IOCs and 15 ATT&CK techniques include a free Splunk SPL rule.

Read the full threat intel for Gootloader Takedown in Operation Endgame: Detection & IOCs →

Chapters

  1. 0:00The hookGootloader infected about 25,000 computers.
  2. 0:04The storyDOJ removed it from over 100 servers.
  3. 0:10Attack pathFake forum pages, reportedly, lured victims.
  4. 0:22AttributionAttributed to UNC2565.
  5. 0:28Indicators of compromise17 indicators to hunt: 3 IPs, 1 domain and 2 URLs, and more.
  6. 0:35MITRE ATT&CK techniques15 ATT&CK techniques, from resource development to command and control.
  7. 0:40Remediation6 steps now: Hunt for wscript.exe/cscript.exe executing .js files from user-writable paths.
  8. 0:50Detection rules9 detection rules, in SPL, KQL and Sigma.
Transcript

0:00Gootloader infected about 25,000 computers.

0:05DOJ removed it from over 100 servers.

0:10Fake forum pages, reportedly, lured victims.

0:14A ZIP file, then a JScript loader.

0:17Access was sold to ransomware actors.

0:22Attributed to UNC2565. Confidence: medium.

0:2917 indicators to hunt: 3 IPs, 1 domain and 2 URLs, and more.

0:3515 ATT&CK techniques, from resource development to command and control.

0:416 steps now: Hunt for wscript.exe/cscript.exe executing .js files from user-writable paths.

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

0:56Threadlinqs. The unified security engineering platform.