Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 240c4d84de978cad…

MALICIOUS

Office (OLE)

135.2 KB Created: 2018-10-03 18:57:00 Authoring application: Microsoft Office Word First seen: 2020-04-06
MD5: b63b08da2f2af20b76f15b716d70fc1a SHA-1: 76b8ad25d1fdf85ddcd77405fe059af5656f358b SHA-256: 240c4d84de978cadf8785432f2b69a4625ea06a05172a4a0d26c848d17902b34
124 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with the signature Doc.Downloader.Sload-6794075-0. Static analysis detected a legacy WordBasic auto-exec macro marker (AutoOpen) and VBA p-code with execution tokens, indicating an attempt to run code upon opening. Although VBA macros could not be fully extracted, the presence of these indicators strongly suggests the document is designed to deliver a malicious payload via macro execution, consistent with a spearphishing attachment.

Heuristics 5

  • ClamAV: Doc.Downloader.Sload-6794075-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Sload-6794075-0
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • 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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