Win.Trojan.BlackEnd-1 — Office (OLE) malware analysis

Static analysis result for SHA-256 f937fc29a04fb0cc…

MALICIOUS

Office (OLE)

16.0 KB Created: 1996-12-26 19:54:00 Authoring application: Microsoft Word 6.0 First seen: 2015-09-30
MD5: 98c8bac4178bdabd02d2c5adc1ea2300 SHA-1: 5af209c806dc82e053fe16f14db90977bba009b4 SHA-256: f937fc29a04fb0cc5d0d606a4bcf1abb6e41ceec3b986029e635ee245baada50
80 Risk Score

Malware Insights

Win.Trojan.BlackEnd-1 · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic

The file is identified as a legacy Word document containing a WordBasic AutoOpen macro, a known marker for the BlackEnd virus. The document body explicitly states it is the 'BlackEnd AutoMacro Virus' and mentions its generation with a 'DEMOLITION KIT'. The presence of the AutoOpen macro indicates an attempt to automatically execute malicious code when the document is opened, consistent with the BlackEnd family's known behavior.

Heuristics 2

  • ClamAV: Win.Trojan.BlackEnd-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.BlackEnd-1
  • Legacy WordBasic auto-exec macro marker medium OLE_LEGACY_WORDBASIC_AUTOEXEC
    OLE Word document contains a legacy WordBasic auto-execution marker such as AutoOpen, but no modern VBA project was recovered and no stronger macro-virus family marker was present. This is analyst-facing evidence for old Word macro execution surface, not a downloader or parser-CVE attribution by itself.

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