Win.Trojan.Wazzu-26 — Office (OLE) malware analysis

Static analysis result for SHA-256 7c9bc1644ded1a79…

MALICIOUS

Office (OLE)

6.0 KB First seen: 2012-06-14
MD5: 3d67d5c0006ac902aa7289057b8ee84e SHA-1: cf1aa379ed9aa68eb50dd995aaa233fc43fdc28b SHA-256: 7c9bc1644ded1a795384a9f180604783f05211e006b8f07b538ed33704dee38b
102 Risk Score

Malware Insights

Win.Trojan.Wazzu-26 · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic

The sample exhibits characteristics of a legacy WordBasic macro virus, specifically identified as a "RSN MACRO VIRUS Goat file". ClamAV detection confirms it as Win.Trojan.Wazzu-26. The presence of legacy macro markers and the explicit mention of "RSN MACRO VIRUS" in the document body strongly suggest its nature as a historical macro-based threat.

Heuristics 3

  • ClamAV: Win.Trojan.Wazzu-26 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Wazzu-26
  • 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) 230 bytes
SHA-256: 1a3214d000e4000eb71778c3edfb67af3f1798c3a992f555ac0d2619509d48a7
Preview script
First 1,000 lines of the extracted script
MAIN
, - * MinSize
@cmd0056
= "Acid_Burn"
@cmd0054 = "Assassins"
F$ = @cmd8025 = ":AutoOpen"
G$ = "Global:AutoOpen"
M$ = @cmd80af @cmd8009 @cmd818e @cmd80b8 0 , 10
M$ = "NORMAL.DOT"
@cmd80c2 G$ , F$
@cmd0054 = 1
@cmd80c2 F$ , G$
=

Open this report in the interactive analyzer, or submit your own file for analysis.