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

Static analysis result for SHA-256 ebf77bac31a17932…

MALICIOUS

Office (OLE)

22.5 KB Created: 1997-10-24 17:44:00 Authoring application: Microsoft Word 6.0 First seen: 2012-06-14
MD5: a9955a093f6ffef85e0dc3abd606ffb6 SHA-1: 860c164db4a189d8c7c8702781b3473c3d3b2159 SHA-256: ebf77bac31a17932d773494fec22293d4db2e3a71c787e126ff32c8285046c2b
80 Risk Score

Malware Insights

Win.Trojan.Tytin-1 · confidence 95%

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

The sample is a legacy Word document containing a WordBasic macro that executes upon opening (AutoOpen). The macro presents a social engineering message to the user, prompting them to infect their Normal.dot template with the macro. This behavior is consistent with a macro-based trojan designed to spread and infect other documents.

Heuristics 2

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

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