Win.Trojan.Moscow91-1 — Office (OLE) malware analysis

Static analysis result for SHA-256 224c77b67a618e64…

MALICIOUS

Office (OLE)

15.0 KB Created: 1999-04-26 19:35:00 Authoring application: Microsoft Word 6.0 First seen: 2012-06-14
MD5: 9352363943cc4432372ad4ac557799f0 SHA-1: 526970adf86015ef0f13ed1731eafcd24be5f8a3 SHA-256: 224c77b67a618e64fa43a3401abeb6a6004d0ddb0c46fb0feeedf351eba67241
100 Risk Score

Malware Insights

Win.Trojan.Moscow91-1 · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic

The file exhibits characteristics of a legacy WordBasic macro virus, specifically identified by ClamAV as Win.Trojan.Moscow91-1. The presence of markers like 'ToolsMacro' and 'AutoOpen' within the document body strongly indicates the execution of embedded malicious macros. This type of malware typically aims to compromise the system by running arbitrary code.

Heuristics 2

  • ClamAV: Win.Trojan.Moscow91-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Moscow91-1
  • Legacy WordBasic macro-virus markers high OLE_LEGACY_WORDBASIC_MACRO_VIRUS
    OLE Word document contains legacy WordBasic auto-execution macro markers such as AutoOpen plus ToolsMacro/MacroFile/fileMacro/globMacro or named historical macro-virus strings. These old Word 6/95 macro forms are not exposed as a modern VBA project, so normal VBA source extraction can miss them.

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