MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1027 Obfuscated Files or Information
The sample exhibits characteristics of a malicious document, including a NOP sled and XOR-encoded strings, indicating an attempt to hide malicious code. The OLE document structure also shows a significant amount of slack space, which is often used for obfuscation or embedding additional content. While no specific family is identified, the techniques used point towards a downloader or dropper attempting to conceal its payload.
Heuristics 3
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XOR-encoded strings (key 0xC6) critical SC_XOR_ENCODEDFound 7 Windows library/API name(s) XOR-encoded with single-byte key 0xC6: 'KERNEL32.DLL', 'iphlpapi.dll', 'LoadLibraryA', 'GetProcAddress', 'VirtualAlloc', 'VirtualProtect', 'ExitProcess '
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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 233,472 bytes but its declared streams total only 129,793 bytes — 103,679 bytes (44%) 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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