Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 487240dd3eabe694…

MALICIOUS

Office (OLE)

12.5 KB Created: 1996-08-06 11:16:00 Authoring application: Microsoft Word for Windows 95 First seen: 2012-06-14
MD5: 78685560e7e11ef86c22c75e45a5581b SHA-1: 504d0eb2942d8ed7179597073ecaca1e77b0e179 SHA-256: 487240dd3eabe694e60232c1bf50f50978554e300d4fc8b7f38d3a02cca55a78
80 Risk Score

Malware Insights

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

The sample is a legacy Word document containing WordBasic macros, specifically an AutoOpen macro, which is a known indicator of malicious intent. The presence of 'Win.Trojan.Uck-2' detection by ClamAV further supports its malicious nature. The macro's likely purpose is to execute a payload, potentially a downloader, upon opening the document.

Heuristics 2

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