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

Static analysis result for SHA-256 d50750aa1d7a9a37…

MALICIOUS

Office (OLE)

14.5 KB Created: 1997-03-16 18:02:00 Authoring application: Microsoft Word 6.0 First seen: 2012-06-14
MD5: 25f1c6a9ddeccb3cef251ec66c556b66 SHA-1: 860cc32e0f63eab477c0c9043e32decc758db7cf SHA-256: d50750aa1d7a9a3702cd92c7cc1af3e713fef60b63930beafd3f83d7eddf2c22
80 Risk Score

Malware Insights

Win.Trojan.Sunbeam-1 · confidence 90%

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The sample is identified as Win.Trojan.Sunbeam-1 by ClamAV. Legacy WordBasic macros are present, indicated by the OLE_LEGACY_WORDBASIC_AUTOEXEC heuristic. These macros attempt to execute a batch file named 'die.bat' and write content to it, suggesting a downloader or execution mechanism for a secondary payload.

Heuristics 2

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