Win.Trojan.Laroux-12 — Office (OLE) malware analysis

Static analysis result for SHA-256 163f5100c7b953b1…

MALICIOUS

Office (OLE)

67.0 KB Authoring application: Microsoft Excel First seen: 2012-06-14
MD5: 47c64944d2050de4ac9743b7ccaff947 SHA-1: b50da4ed236e839a63e3172f5f783a305d84a61d SHA-256: 163f5100c7b953b171ad0a6b08499fbb403384e49088e6175ccd3184b724a13b
120 Risk Score

Malware Insights

Win.Trojan.Laroux-12 · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic

The file is identified as a malicious Excel 5 macro-virus, specifically Win.Trojan.Laroux-12. Heuristics indicate the presence of macro markers commonly associated with the Laroux family, including auto_open and various workbook/module manipulation functions. The document body contains garbled text, suggesting potential obfuscation or corruption, but the core functionality points to macro execution.

Heuristics 2

  • ClamAV: Win.Trojan.Laroux-60 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Laroux-60
  • Excel 5 Laroux/Larou-CV macro-virus marker cluster critical OLE_XLS5_LAROUX_MACRO_VIRUS
    Legacy Excel workbook contains a Laroux/Larou-CV macro-virus marker cluster including auto_open execution and workbook/module replication strings. This is a narrow indicator for an infected legacy Excel macro workbook.

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