Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 fe3fb311798cc3c4…

MALICIOUS

Office (OLE)

133.9 KB Created: 2018-10-03 18:57:00 Authoring application: Microsoft Office Word First seen: 2019-05-31
MD5: 71d3df86447c1ce1b825a1fe5a88fb34 SHA-1: 46a4dca48e970135a7c1f26863e286fade9bc8e8 SHA-256: fe3fb311798cc3c48f4f42ea76ff5e81608ff8489b8e38f9104d843e1f3b59c1
84 Risk Score

Malware Insights

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

The file is detected as malicious by ClamAV as Doc.Downloader.Sload-6794075-0. A legacy WordBasic AutoOpen macro marker was found, indicating an attempt to automatically execute malicious code upon opening. Although VBA macros could not be extracted, the presence of the marker and the ClamAV detection strongly suggest a downloader or exploit payload. The document body content is obfuscated and does not provide clear user-facing text.

Heuristics 4

  • ClamAV: Doc.Downloader.Sload-6794075-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Sload-6794075-0
  • 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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