Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 098cf670a1945daa…

MALICIOUS

Office (OLE)

13.0 KB Created: 1997-12-21 04:44:00 Authoring application: Microsoft Word for Windows 95 First seen: 2012-06-14
MD5: d8b87bee95656a5eb98529e3065d2440 SHA-1: 880eeec669bd017cdc564d42852ee9d2b97cb458 SHA-256: 098cf670a1945daab1a9cebb3bcf9d398c7e4192cab4cbab086045856b425164
100 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample contains legacy WordBasic macro virus markers, specifically 'ToolsMacro', indicating a malicious intent to spread. The presence of 'DefeatAV' and 'Stealth' keywords suggests attempts to evade detection. The macro code appears to be designed to infect other documents, as indicated by 'del all macro in \do normal.dot'.

Heuristics 2

  • ClamAV: Win.Trojan.CVCK1-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.CVCK1-1
  • 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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