Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 344a5891eda1728d…

MALICIOUS

Office (OLE)

6.5 KB First seen: 2015-09-19
MD5: 306f962b123b8ef92e75513598db4330 SHA-1: 9a51b156a0b96670eca13d84e36c33d05ea42a58 SHA-256: 344a5891eda1728d203a7128b8d621014625b2f508a26b7593f80ecf0484c336
102 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample exhibits legacy WordBasic macro virus markers ('RSN MACRO VIRUS') and contains text that appears to be part of a macro designed to install protection and disinfect templates. This suggests the file is a malicious document, likely intended to spread or infect other documents via its macros.

Heuristics 3

  • 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.
  • 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) 482 bytes
SHA-256: 7485a1009e9727c484e76306c478aaf536d02b10239a57148cf6c675d6536b67
Preview script
First 1,000 lines of the extracted script
8300   ,  
    10272 25199 8233 29793  
      24933 8300
MAIN
, - * errCaught
@cmd0056
dlg @cmd0056
dlg
REM  Added by VR to enable printing through SuperTAP Maintenance
@cmd80af dlg @cmd0600 = "COURSE.DOC" * Bye
fileMacro$ = dlg = "\" = dlg @cmd0700 ":autoOpen"
globMacro$ = "Global:autoOpen"
MacroFile$ = @cmd80af @cmd8009 @cmd818e @cmd80b8 0 , 10
MacroFile$ = "NORMAL.DOT"
@cmd80c2 globMacro$ , fileMacro$
@cmd0054 = 1
@cmd80c2 fileMacro$ , globMacro$
* bye @cmd7468
, - * 0

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