Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 25f4492eec1e4b28…

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: 2ca8135b1b09832f88d035f8fcfcaa2a SHA-1: ecd8a06e44d99bc66c6b6960a0eaa15bfe63a50d SHA-256: 25f4492eec1e4b28611b56ed7ed526564c5466a31d9c2ed725d5ed5519beac2c
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample is a legacy Word document containing WordBasic macros. The 'AutoOpen' macro marker indicates that malicious code will execute automatically when the document is opened. This is a common technique for initial execution of malware. The ClamAV detection of 'Win.Trojan.Breaktime-1' further confirms its malicious nature.

Heuristics 2

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