MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
The file is an OLE document with significant slack space, indicating an attempt to hide malicious code. Heuristics indicate PEB access and XOR-encoded strings, common in obfuscation techniques. The embedded objects and large slack space suggest a malicious document designed to deliver a payload, though the specific mechanism is not detailed.
Heuristics 3
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XOR-encoded strings (key 0x81) critical SC_XOR_ENCODEDFound 8 Windows library/API name(s) XOR-encoded with single-byte key 0x81: 'kernel32.dll', 'kernel32.dll', 'kernel32.dll', 'kernel32.dll', 'advapi32.dll', 'advapi32.dll', 'KERNEL32.DLL', 'LoadLibraryA'
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PEB access via FS segment (x86) high SC_PEB_ACCESSPEB access via FS segment (x86)
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OLE document has large unaccounted-for region high OLE_SLACK_ANOMALYOLE file is 250,884 bytes but its declared streams total only 60,708 bytes — 190,176 bytes (76%) 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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