Win.Trojan.Gas-1 — Office (OLE) malware analysis

Static analysis result for SHA-256 a00b4a9622143edd…

MALICIOUS

Office (OLE)

11.5 KB First seen: 2012-06-14
MD5: f4db5c163453066fa7d02f09409d1244 SHA-1: 29b33b9fbec006dd34095e6f1810c829eba4cc56 SHA-256: a00b4a9622143eddee350f37a064b3d2dc1239e3c3a12a8906feecd072a51b54
100 Risk Score

Malware Insights

Win.Trojan.Gas-1 · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic

The sample is identified as a legacy WordBasic macro virus, specifically a 'RSN MACRO VIRUS Goat file' created in 1997. The document body contains markers and text indicative of older macro viruses, including references to 'AutoClose' and 'I will clean up', suggesting malicious macro execution. The ClamAV detection of 'Win.Trojan.Gas-1' further supports its malicious nature.

Heuristics 2

  • ClamAV: Win.Trojan.Gas-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Gas-1
  • 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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