Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 a315865eeabc7e48…

MALICIOUS

Office (OLE)

12.0 KB Created: 1998-02-12 01:38:00 Authoring application: Microsoft Word for Windows 95 First seen: 2012-06-14
MD5: 7d1db6ded3792815341f8d56c22f2675 SHA-1: d861cebbc3b76c9ca07829a69453287bac2bc773 SHA-256: a315865eeabc7e487b29acfa701ead4abbd767380dfe2638d24f51f457f72346
80 Risk Score

Malware Insights

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

The file is an OLE document containing legacy WordBasic macros, indicated by the AUTOOPEN marker and the OLE_LEGACY_WORDBASIC_AUTOEXEC heuristic. The ClamAV detection confirms its malicious nature. The presence of AUTOOPEN suggests the macro executes automatically, likely to download and execute a secondary payload, which is a common tactic for initial compromise via spearphishing attachments.

Heuristics 2

  • ClamAV: Win.Trojan.Macro-11 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Macro-11
  • 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.