Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 98fd8f333df86f77…

MALICIOUS

Office (OLE)

113.2 KB Created: 2018-10-03 10:50:00 Authoring application: Microsoft Office Word First seen: 2019-05-31
MD5: 2b23d901d977d2c2ba8e3bb85a420c2e SHA-1: 92eb112aff90c1160ed9b457b67705dfbcd7f9c8 SHA-256: 98fd8f333df86f7719324f5d6ad702678b73ff70ea64bc34813f31e0fdb2dc29
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 for Doc.Malware.00536d-6705955-0. A legacy WordBasic auto-exec macro marker (AutoOpen) was detected, suggesting an attempt to automatically execute code upon opening. Although VBA extraction failed, the presence of an embedded URL and the overall malicious verdict indicate a likely phishing attempt via attachment.

Heuristics 4

  • ClamAV: Doc.Malware.00536d-6705955-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.00536d-6705955-0
  • 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
    olevba could not extract VBA macros (AssertionError); format-agnostic byte-level scans still ran. Likely legacy, encrypted, or malformed OLE/OOXML — re-scanning the same bytes will yield the same outcome.
  • 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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