Win.Trojan.Tear-2 — Office (OLE) malware analysis

Static analysis result for SHA-256 83098d3ef7891973…

MALICIOUS

Office (OLE)

11.5 KB Created: 1997-06-12 10:32:00 Authoring application: Microsoft Word for Windows 95 First seen: 2012-06-14
MD5: 4efe2b4779372b2c7cf6cad753ee691a SHA-1: 4bb848bb695c27eea9ca9689113e4d895d7372ef SHA-256: 83098d3ef7891973a3b28ad1eb472e8151a3d517ee07b5e24feaa3012c687b3e
80 Risk Score

Malware Insights

Win.Trojan.Tear-2 · confidence 90%

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

The sample is a legacy Word document containing WordBasic macros. The presence of the 'AutoOpen' macro and the 'FileSaveAs' marker strongly suggests an attempt to automatically execute code when the document is opened. The ClamAV detection of 'Win.Trojan.Tear-2' confirms its malicious nature, and the legacy macro execution is a common technique for delivering further stages of an attack.

Heuristics 2

  • ClamAV: Win.Trojan.Tear-2 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Tear-2
  • 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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