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Bottle Exploit Kit Japan Malvertising: Detection & IOCs

Bottle EK exploits IE and Flash for Japanese users, and Operation Overtrap used it to drop Cinobi. 9 detection rules, 23 IOCs and a free Splunk SPL rule.

Read the full threat intel for Bottle Exploit Kit Japan Malvertising: Detection & IOCs →

Chapters

  1. 0:00The hookBanking kit targets Japan, Internet Explorer.
  2. 0:04The storySeptember: Japan-targeted malvertising campaign begins.
  3. 0:12Attack pathMalvertising loads browser exploits.
  4. 0:26AttributionNo threat actor is attributed.
  5. 0:30Indicators of compromise17 indicators to hunt: 2 IPs, 4 domains and 8 SHA-256 hashes, and more.
  6. 0:39MITRE ATT&CK techniques11 ATT&CK techniques, from execution to command and control.
  7. 0:44Remediation4 steps now: Block priv[.]inteleksys[.]com, sales[.]inteleksys[.]com.
  8. 0:50Detection rules9 detection rules, in SPL, KQL and Sigma.
Transcript

0:00Banking kit targets Japan, Internet Explorer.

0:05September: Japan-targeted malvertising campaign begins.

0:09Later: Banking trojan Cinobi spreads.

0:12Malvertising loads browser exploits.

0:15Checks for Japanese Explorer.

0:17Decodes stealer, drops to disk.

0:19Downloads Tor executable, connects to onion.

0:22Injects into browser, steals data.

0:27No threat actor is attributed. Confidence: low.

0:3117 indicators to hunt: 2 IPs, 4 domains and 8 SHA-256 hashes, and more.

0:3911 ATT&CK techniques, from execution to command and control.

0:444 steps now: Block priv[.]inteleksys[.]com, sales[.]inteleksys[.]com.

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

0:56Threadlinqs. The unified security engineering platform.