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

Static analysis result for SHA-256 fcedd2d3d57fdaec…

MALICIOUS

Office (OLE)

31.0 KB Created: 1997-12-31 17:52:00 Authoring application: Microsoft Word for Windows 95 First seen: 2012-06-14
MD5: eb1e2cd80280fb5626c25762c842156f SHA-1: 9b1a7e2d092dc47b718dda36a36c38a37b8d07c0 SHA-256: fcedd2d3d57fdaec5c7ec20d5654f032ad57d732f08799084350f7d32812198b
100 Risk Score

Malware Insights

Win.Trojan.Tunguska-1 · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains legacy WordBasic macros, specifically an AutoOpen macro, which is a known indicator of malicious activity. The heuristic 'SE_ENABLE_LURE' suggests the document attempts to trick the user into enabling macros. ClamAV detection confirms this is Win.Trojan.Tunguska-1, a known malware family. The AutoOpen macro is likely used to initiate the execution of a malicious payload.

Heuristics 3

  • ClamAV: Win.Trojan.Tunguska-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Tunguska-1
  • Legacy WordBasic auto-exec macro marker medium OLE_LEGACY_WORDBASIC_AUTOEXEC
    OLE Word document contains a legacy WordBasic auto-execution marker such as AutoOpen, but no modern VBA project was recovered and no stronger macro-virus family marker was present. This is analyst-facing evidence for old Word macro execution surface, not a downloader or parser-CVE attribution by itself.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings

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