Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 6ecbf890439524b4…

MALICIOUS

Office (OLE)

74.3 KB First seen: 2019-10-01
MD5: 138b0a764f64cae3647cc3104daca2dd SHA-1: f8d56da49c5054efaa66c20d06401c8bfc59c888 SHA-256: 6ecbf890439524b4c4d8eea7184adcbb3e81746150918b2bbba3725d795539d1
104 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample is a malicious OLE file containing a legacy WordBasic auto-exec macro marker (AutoOpen). The heuristic 'OLE_VBA_PCODE_AUTOEXEC_EXEC' indicates that this macro uses p-code to execute, specifically by calling CreateObject, which is a strong indicator of malicious intent. While VBA extraction failed, the presence of these indicators strongly suggests the document is designed to run arbitrary code upon opening.

Heuristics 5

  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • 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
    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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