Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 9f9208a75f8ee41d…

MALICIOUS

Office (OLE)

10.5 KB Created: 1601-01-01 00:00:00 Authoring application: Microsoft Word 6.0 First seen: 2012-06-14
MD5: 9457f40bca4fd88d0516bfc3fe4bc965 SHA-1: da3ca56dbf47021d53847fef8756e6fae61a2503 SHA-256: 9f9208a75f8ee41d3ea30c39170589c14719ab021c837201697a333f9b7571af
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, indicated by the OLE_LEGACY_WORDBASIC_AUTOEXEC heuristic and the presence of AutoOpen and AutoClose functions. The ClamAV detection as Win.Trojan.Date-1 further confirms its malicious nature. The macros are likely designed to execute automatically, potentially downloading and running a secondary payload, which is a common tactic for initial compromise via spearphishing attachments.

Heuristics 2

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