Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 4a1b17c10d92c189…

MALICIOUS

Office (OLE)

128.5 KB Created: 2018-10-02 22:41:00 Authoring application: Microsoft Office Word First seen: 2018-11-13
MD5: 92a48c5dfaa6f3c3a2f9dddb5879ba76 SHA-1: 372cf87c4de23e1744f7595a89164279dd73c2d4 SHA-256: 4a1b17c10d92c189ee93a7e2e624b8e4144cd4f709d6183dab4ad5b2a3cdaa5b
84 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a critical heuristic firing. The presence of a legacy WordBasic AutoOpen macro marker suggests an attempt to automatically execute malicious code upon opening. Although VBA extraction failed, the file's nature as a malicious document points towards a spearphishing attachment attack vector.

Heuristics 4

  • ClamAV: Doc.Malware.00536d-6705548-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.00536d-6705548-0
  • 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.
  • Unsupported Office format for VBA extraction info OFFICE_FORMAT_UNSUPPORTED
    The Analyzer could not extract VBA macros: the document may be legacy, encrypted or malformed.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://schemas.openxmlformats.org/drawingml/2006/main In document text (OLE body)

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