MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
The sample is an OLE document with significant slack space and a detected NOP sled, indicating potential shellcode. The XOR-encoded strings suggest obfuscation commonly used to hide malicious payloads. While an embedded URL was found, it was confirmed as benign. The lack of a document body or scripts limits the ability to determine the exact attack pattern or family, but the heuristics point towards a downloader or exploit delivery mechanism.
Heuristics 4
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XOR-encoded strings (key 0x95) critical SC_XOR_ENCODEDFound 2 Windows library/API name(s) XOR-encoded with single-byte key 0x95: 'LoadLibraryA', 'GetProcAddress'
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NOP sled detected high SC_NOP_SLEDFound 20+ consecutive 0x90 bytes
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OLE document has large unaccounted-for region high OLE_SLACK_ANOMALYOLE file is 412,721 bytes but its declared streams total only 16,486 bytes — 396,235 bytes (96%) 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).
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Embedded URL info EMBEDDED_URLOne 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.microsoft.com/office/word/2003/wordml}}\paperw11909\paperh16834\margl1774\margr526\margt1087\margb709\gutter0\ltrsect
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