Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 f6435042516b52bc…

MALICIOUS

Office (OLE)

11.0 KB Created: 1997-12-31 17:52:00 Authoring application: Microsoft Word for Windows 95 First seen: 2012-06-14
MD5: d7a0d9b481956beb60edd0de7dfaa6d2 SHA-1: 4613038d789c600eef8b0c0176e9929b654164f9 SHA-256: f6435042516b52bcfb97115ee735137df6f4b0e892db0c144ee937f0ab11b5c7
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample is a legacy Word document containing a WordBasic AutoOpen macro, which is a known technique for executing malicious code upon document opening. The presence of the 'AutoOpen' marker and the ClamAV detection as Win.Trojan.Tear-1 strongly indicate malicious intent, likely to download and execute a secondary payload.

Heuristics 2

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