Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 619bd777ff9f4f53…

MALICIOUS

Office (OLE)

7.0 KB Created: 1995-10-17 15:47:00 Authoring application: Microsoft Word 6.0 First seen: 2015-09-20
MD5: 3c8d7ce0816743d3f4d0ea85f93214e0 SHA-1: 44962fac6687e2b8c4ec734d2f6c03306759fd1b SHA-256: 619bd777ff9f4f53da05a6149902c8bbc091914a75908922ba68615a83f7210a
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is an OLE file containing legacy WordBasic macros, indicated by the AutoOpen macro marker and the OLE_LEGACY_WORDBASIC_AUTOEXEC heuristic. The ClamAV detection as Win.Trojan.Hunter-2 further confirms its malicious nature. The presence of AutoOpen suggests an attempt to automatically execute code when the document is opened, a common technique for delivering secondary payloads.

Heuristics 2

  • ClamAV: Win.Trojan.Hunter-2 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Hunter-2
  • 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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