Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 cc637a1ccdb5e83c…

MALICIOUS

Office (OLE)

8.5 KB First seen: 2012-06-14
MD5: eff5872cf3eb797bec8a707cb9881b9f SHA-1: 5025976c6386dd096ad0f3b50a258f8baf1b4f5e SHA-256: cc637a1ccdb5e83c916ea080ce149ee85e8efefc0f122bd6c6b2eae72500261f
100 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 an attempt to obfuscate the malicious content, including file paths and what seem to be macro names like 'AutoOpen' and 'AutoClose'. The primary technique observed is the use of Visual Basic for Application (VBA) macros to execute malicious code.

Heuristics 2

  • ClamAV: Win.Trojan.MG-6 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.MG-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.

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