Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 639a49390c6f8597…

MALICIOUS

Office (OLE)

119.1 KB Created: 2012-11-23 04:35:00 Authoring application: Microsoft Office Word First seen: 2020-12-25
MD5: d2bb9b81bb54930696262b1d09555a0c SHA-1: 8dcb7c4e82f8b2f8b75c0fc99cf341ef784c34f3 SHA-256: 639a49390c6f8597d36ec0bd245efa1b4a078c0506fb515e577a40389b39a614
262 Risk Score

Heuristics 7

  • MSCOMCTL.Toolbar — CVE-2012-0158 / CVE-2012-1856 high CVE likely CVE_2012_1856
    MSCOMCTL.Toolbar — CVE-2012-0158 / CVE-2012-1856
  • ClamAV: Win.Trojan.TerminatorRat-2 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.TerminatorRat-2
  • NOP sled detected high SC_NOP_SLED
    Found 20+ consecutive 0x90 bytes
    Disassembly hidden — these bytes score as data, not coherent x86 code (1/1 branch targets land on an instruction boundary (100% coherence)).
  • x86 GetPC stub (CALL $+5; POP EBX) high SC_GETPC_CALL
    x86 GetPC stub (CALL $+5; POP EBX)
    Disassembly hidden — these bytes score as data, not coherent x86 code (2/3 branch targets land on an instruction boundary (67% coherence)).
  • OLE document has large unaccounted-for region high OLE_SLACK_ANOMALY
    OLE file is 121,991 bytes but its declared streams total only 20,824 bytes — 101,167 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).
  • 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.
  • 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 In document text (OLE body)