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

Static analysis result for SHA-256 0b4744f24c7f06fd…

MALICIOUS

Office (OLE) / .DOC

143.9 KB Created: 2006-01-25 08:30:00 Authoring application: Microsoft Office Word
MD5: b90d332bdb7736bc4acaf94e7029ea6f SHA-1: d5af4111554abc73c084a69b6cfc23ee13e8284e SHA-256: 0b4744f24c7f06fd1fc9afb23d28bf0c072f850ad0fb5c4e3ceee2d9d659a8c7
260 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1071.001 Web Protocols

The sample exhibits high-confidence heuristics indicating the execution of external code, including references to CreateProcess, ShellExecute, VirtualAlloc, LoadLibrary, and GetProcAddress APIs. The OLE structure also shows an appended payload, suggesting the document is a loader for a secondary executable. No document body text was available for analysis, and no scripts were extracted.

Heuristics 7

  • Reference to CreateProcess API high SC_STR_CREATEPROCESS
    Reference to CreateProcess API
  • Reference to ShellExecute API high SC_STR_SHELLEXEC
    Reference to ShellExecute API
  • Reference to LoadLibrary API high SC_STR_LOADLIBRARY
    Reference to LoadLibrary API
  • Reference to GetProcAddress API high SC_STR_GETPROCADDRESS
    Reference to GetProcAddress API
  • OLE document has large unaccounted-for region high OLE_SLACK_ANOMALY
    OLE file is 147,360 bytes but its declared streams total only 21,151 bytes — 126,209 bytes (86%) 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.
  • Reference to VirtualAlloc API medium SC_STR_VIRTUALALLOC
    Reference to VirtualAlloc API

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