Malicious Office (OLE) / .DOC — malware analysis report

Static analysis result for SHA-256 d176b536a7b6f0e2…

MALICIOUS

Office (OLE) / .DOC

273.0 KB Created: 2010-03-16 08:46:00 Authoring application: Microsoft Office Word
MD5: 4cda7adcdf2438f1b5a1be5ab4940239 SHA-1: b8633998489e2adbeea4b8160b1ae0377b31e62c SHA-256: d176b536a7b6f0e2156c0108257d061a5ad6e48b0122dadd7071097678b71585
82 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The file is an OLE document with a large slack region and an appended executable payload, indicating it's likely a dropper. Although VBA macros could not be extracted due to an unsupported format, the presence of an appended payload strongly suggests malicious intent. The document body text appears to be system status information, possibly a lure. The appended payload is the primary indicator of malicious activity.

Heuristics 4

  • OLE document has large unaccounted-for region high OLE_SLACK_ANOMALY
    OLE file is 279,552 bytes but its declared streams total only 58,427 bytes — 221,125 bytes (79%) live in unallocated sector slack. This is the canonical hiding place for pre-macro-era Office exploit payloads (XOR-encoded shellcode reached via a parser pointer-corruption bug in the document structure).
  • OLE file has appended executable-looking payload bytes high OLE_APPENDED_PAYLOAD
    OLE compound file contains a large high-entropy region beyond the declared major streams and that region includes shellcode, PE, or loader API markers. This is a payload-carrier signal, not a specific CVE attribution by itself.
  • Unsupported Office format for VBA extraction info OFFICE_FORMAT_UNSUPPORTED
    olevba could not extract VBA macros (PermissionError); 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
    • http://schemas.openxmlformats.org/officeDocument/2006/bibliography
    • http://schemas.openxmlformats.org/officeDocument/2006/customXml