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XLoader Fake Order Phishing Chain: Detection & IOCs

Fake order emails load XLoader in memory via LuaJIT and steal Vault and cookie data. 9 detection rules, 26 IOCs, 18 techniques and a free Splunk SPL rule.

Read the full threat intel for XLoader Fake Order Phishing Chain: Detection & IOCs →

Chapters

  1. 0:00The hookFormBook infostealer returns as XLoader.
  2. 0:04The storyBusiness phishing emails deliver malicious RAR files.
  3. 0:11Attack pathAccording to reports, phishing opens RAR with JScript.
  4. 0:25AttributionNo threat actor is attributed.
  5. 0:29Indicators of compromise25 indicators to hunt: 1 IP, 17 domains and 4 SHA-256 hashes, and more.
  6. 0:38MITRE ATT&CK techniques17 ATT&CK techniques, from initial access to command and control.
  7. 0:44Remediation3 steps now: Block the delivery relay.
  8. 0:50Detection rules9 detection rules, in SPL, KQL and Sigma.
Transcript

0:00FormBook infostealer returns as XLoader.

0:05Business phishing emails deliver malicious RAR files.

0:08Then steals credentials.

0:11According to reports, phishing opens RAR with JScript.

0:15LuaJIT unpacks and erases AMSI.

0:18Decrypts the XLoader core in memory.

0:21Steals Vault credentials and browser cookies.

0:25No threat actor is attributed. Confidence: low.

0:3025 indicators to hunt: 1 IP, 17 domains and 4 SHA-256 hashes, and more.

0:3917 ATT&CK techniques, from initial access to command and control.

0:443 steps now: Block the delivery relay.

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

0:56Threadlinqs. The unified security engineering platform.