MALICIOUS
100
Risk Score
Malware Insights
MITRE ATT&CK
T1027 Obfuscated Files or Information
The file is identified as malicious due to 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 unusual and potentially hides malicious components. The document body contains only the word 'Mary', providing no further context for the attack. No specific malware family is identifiable from the available evidence.
Heuristics 2
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XOR-encoded strings (key 0xC2) critical SC_XOR_ENCODEDFound 2 Windows library/API name(s) XOR-encoded with single-byte key 0xC2: 'advapi32.dll', 'RegOpenKeyExA'
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OLE document has large unaccounted-for region high OLE_SLACK_ANOMALYOLE file is 64,000 bytes but its declared streams total only 16,543 bytes — 47,457 bytes (74%) 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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