Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 aca822800c8d7ae2…

MALICIOUS

Office (OLE)

15.5 KB Created: 1996-08-06 10:16:00 Authoring application: Microsoft Word for Windows 95 First seen: 2012-06-14
MD5: af09b48ef48f2b842b053b544ebe3b99 SHA-1: c1ed3dfb0db6a9eb90912e6aafec4bd3a44c580f SHA-256: aca822800c8d7ae242d3ebf7ff0345f1407d743b179e789b4d52417548773424
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample is a legacy Word document containing a WordBasic AutoOpen macro. This macro is designed to execute a script that leverages DEBUG.EXE to run a malicious payload, likely from C:\ZOO.SCR, and potentially modifies the AUTOEXEC.BAT file. The ClamAV detection confirms its malicious nature.

Heuristics 2

  • ClamAV: Legacy.Trojan.Agent-459 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Legacy.Trojan.Agent-459
  • 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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