Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 14c960454304056d…

MALICIOUS

Office (OLE)

314.2 KB Created: 2006-09-28 17:06:00 Authoring application: Microsoft Office Word First seen: 2015-09-27
MD5: 80fce35b2788afd0e8761eb2c76dbb90 SHA-1: f2ded636281cb16474bf1d47e2c698a21232aaa2 SHA-256: 14c960454304056d2721bcc3fc9eab4440ca32086966cc9bc4613965075770be
180 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The file is an OLE document containing an appended executable payload and exhibits characteristics of exploitation for client execution. Specifically, it triggers heuristics related to CVE-2012-0158 and CVE-2012-1856, indicating an attempt to exploit these vulnerabilities. The presence of an appended payload suggests the document is designed to deliver and execute a secondary malicious component.

Heuristics 4

  • MSCOMCTL.Toolbar — CVE-2012-0158 / CVE-2012-1856 high CVE likely CVE_2012_1856
    MSCOMCTL.Toolbar — CVE-2012-0158 / CVE-2012-1856
  • ClamAV: Doc.Exploit.CVE_2012_0158-17 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Exploit.CVE_2012_0158-17
  • OLE document has large unaccounted-for region high OLE_SLACK_ANOMALY
    OLE file is 321,760 bytes but its declared streams total only 16,640 bytes — 305,120 bytes (95%) 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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