Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 fe12a0ccfc7829bb…

MALICIOUS

Office (OLE)

149.2 KB Created: 2001-12-14 14:26:00 Authoring application: Microsoft Word 9.0
MD5: c891b4f58f35b2fd854fc5a3c2db32f3 SHA-1: f4eb24044792789b6c75ca08512825f72e154af7 SHA-256: fe12a0ccfc7829bb063a4627a2f8f8a0886ccb93a58eef3e9c843241f98b8c2e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution

The file is identified as malicious due to the presence of an appended executable payload and a critical heuristic firing for CVE-2006-6456, indicating exploitation of a Microsoft Word vulnerability. No VBA macros could be extracted, but the file structure and exploit indicate it's designed to deliver a secondary payload. The SHA256 hash is included as a primary IOC.

Heuristics 3

  • CVE-2006-6456 — Microsoft Word malformed table SPRM critical CVE exact CVE_2006_6456
    WordDocument contains a malformed table border-color SPRM in the CVE-2006-6456 shape: a valid table-SPRM cluster is followed by an invalid high-byte 0xFF SPRM where Word expects a normal sprmTBrc*Cv record. Vulnerable Word 2000/2002/2003 parsers corrupt memory while handling this malformed data 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.

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