Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 b8af0ec4dd001980…

MALICIOUS

Office (OLE)

187.0 KB Created: 1996-12-17 01:32:42 Authoring application: Microsoft Excel
MD5: b4148a990e0d45eb48313790bf3bfc2e SHA-1: be7b5defacebcf0043b9da7bf186092e02e078a5 SHA-256: b8af0ec4dd0019800f94e253a61d641c87ede0784e99e5a1f511a5dbdef78f4a
80 Risk Score

Heuristics 2

  • PEB access via FS segment (x86) high SC_PEB_ACCESS
    PEB access via FS segment (x86)
  • OLE document has large unaccounted-for region high OLE_SLACK_ANOMALY
    OLE file is 191,488 bytes but its declared streams total only 24,565 bytes — 166,923 bytes (87%) 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).