Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 b7a7a55aefa9e9fa…

MALICIOUS

Office (OLE)

7.0 KB Created: 1996-12-17 15:39:00 Authoring application: Microsoft Word 6.0 First seen: 2012-06-14
MD5: 7ad9acc07fafec7fee273a7f451d3d95 SHA-1: cc79ff484a04e35c8736f9087f25ccefcad514c1 SHA-256: b7a7a55aefa9e9fa6b369d996959688f4dc41e1ce5dceca0470c8431b718f9df
100 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample contains legacy WordBasic macro code, identified by the 'OLE_LEGACY_WORDBASIC_MACRO_VIRUS' heuristic. The macro includes obfuscated elements and a subroutine named 'Payloadddp' which appears to manipulate document text by inserting random words and the specific string 'wazzu'. This suggests an attempt to either mark the document as infected or to execute a secondary payload, though the exact mechanism is unclear due to the legacy nature of the macro.

Heuristics 2

  • ClamAV: Doc.Trojan.Wazzu-6 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Wazzu-6
  • 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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