Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 e9cba7015e1cf7f2…

MALICIOUS

Office (OLE)

6.0 KB First seen: 2012-06-14
MD5: fafddeb8bd70a45c6e541f7e9f56769a SHA-1: 080cd873f3f7ae7004fc470555967e0882c31bf2 SHA-256: e9cba7015e1cf7f2a6e3b478be2df78f5327fd0c7fff95529dc11a6f9518d9f2
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 and the presence of WordBasic macro virus indicators. The document body contains embedded text that appears to be a lure, including standard text and file paths, common in older macro malware to obscure malicious intent. No specific second-stage payload or network communication was detected in the static analysis.

Heuristics 3

  • ClamAV: Win.Trojan.DMV-7 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.DMV-7
  • 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) 286 bytes
SHA-256: ee5a235140c804099d1d564dc3beb775e1a63854e1fc5087681731f438c06fee
Preview script
First 1,000 lines of the extracted script
29551
MAIN
total = @cmd80b7 0
present = 0
total 0
cycle = 1 total
@cmd80b8 cycle , 0 = "AutoClose"
present = 1
a$ = @cmd803b = ":AutoClose"
present 1
@cmd80c2 a$ , "Global:AutoClose"
present = 0
@cmd80b7 1 0
present = 1
present = 0
@cmd0054 = 1
@cmd80c2 "Global:AutoClose" , a$
@cmd0053

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