Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 0ee1ab08499450c7…

MALICIOUS

Office (OLE)

240.5 KB Created: 2007-12-03 01:19:00 Authoring application: Microsoft Word 9.0
MD5: c2e07d32fbd84a2056e6e2bda0eb607c SHA-1: c81a4ec81bbb15bf55f2dc7cca75c08b85df6705 SHA-256: 0ee1ab08499450c78dfb33581d05387e432b2ad59520d04e81d6b68a3e46b7d1
80 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The OLE document exhibits an unusually large slack region and contains appended executable-looking payload bytes, indicating it functions as a dropper. The file's SHA256 hash is provided as a primary indicator. While no specific family is identified, the technique strongly suggests a malicious attachment used in a spearphishing campaign.

Heuristics 2

  • OLE document has large unaccounted-for region high OLE_SLACK_ANOMALY
    OLE file is 246,272 bytes but its declared streams total only 16,486 bytes — 229,786 bytes (93%) 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.

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