Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 8ef3f712120bddd9…

MALICIOUS

Office (OLE)

15.0 KB Created: 1997-03-19 17:27:00 Authoring application: Microsoft Word 6.0 First seen: 2012-06-14
MD5: 0ca41b67ca3f478b76d16dff5107583f SHA-1: 64d081b3675254e212d2a7953bc7bbaf0609342f SHA-256: 8ef3f712120bddd92c66e795bc4b972317306c109d783223b98ecc0b033ef5b2
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The file is identified as malicious by ClamAV with the signature Win.Trojan.Hark-1. Static analysis revealed legacy WordBasic auto-execution markers, specifically 'AutoClose', indicating that malicious code is intended to run automatically when the document is closed. The document body contains numerous strings related to macro execution and infection, further supporting the malicious intent.

Heuristics 2

  • ClamAV: Win.Trojan.Hark-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Hark-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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