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

Static analysis result for SHA-256 128b8d180c7d464e…

MALICIOUS

Office (OLE) / .DOC

93.5 KB Created: 2007-09-18 04:34:00 Authoring application: Microsoft Word 11.
MD5: ba10682b6ff07e7005d24dbb4017e726 SHA-1: 3a920242a2299ca61831afe047a9a6dec0590695 SHA-256: 128b8d180c7d464e2b2bd3ed37bc060bd8a19adf16c1a4c37da4af23a746c440
82 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample exhibits high-risk heuristics related to PEB access and OLE slack anomalies, indicating potential malicious activity. The document body contains obfuscated strings that reconstruct to a registry path for disabling Office items, likely to bypass security measures. While no explicit scripts were extracted, the structure and heuristics suggest an attempt to execute code or exploit a vulnerability, possibly leading to further payload execution.

Heuristics 3

  • PEB access via FS segment (x86) high SC_PEB_ACCESS
    PEB access via FS segment (x86)
  • OLE document has large unaccounted-for region high OLE_SLACK_ANOMALY
    OLE file is 95,744 bytes but its declared streams total only 16,486 bytes — 79,258 bytes (83%) 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).
  • 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