MALICIOUS
100
Risk Score
Malware Insights
MITRE ATT&CK
T1027 Obfuscated Files or Information
The sample exhibits a critical heuristic firing for XOR-encoded strings, indicating obfuscation techniques are in use. Additionally, a high heuristic for OLE slack anomaly suggests the document structure is intentionally manipulated, likely to hide malicious content. The document body is heavily corrupted and unreadable, providing no direct clues about the intended lure. Without readable document content or extracted scripts, the exact attack pattern and payload delivery mechanism remain unclear, leading to a lower confidence score.
Heuristics 2
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XOR-encoded strings (key 0x83) critical SC_XOR_ENCODEDFound 7 Windows library/API name(s) XOR-encoded with single-byte key 0x83: 'LoadLibraryW', 'LoadLibraryExA', 'GetProcAddress', 'CreateProcessA', 'CreateProcessA', 'CreateProcessW', 'RegOpenKeyExA'
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OLE document has large unaccounted-for region high OLE_SLACK_ANOMALYOLE file is 154,138 bytes but its declared streams total only 8,934 bytes — 145,204 bytes (94%) 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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