MALICIOUS
180
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1027 Obfuscated Files or Information
T1140 Deobfuscate/Decode Files or Information
The file is a PowerPoint document exhibiting several high and critical heuristic firings, including an appended executable payload and XOR-encoded strings. The presence of a NOP sled and significant slack space within the OLE structure further suggests malicious intent. The XOR encoding indicates an attempt to obfuscate malicious content, likely a second-stage payload.
Heuristics 4
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XOR-encoded strings (key 0x60) critical SC_XOR_ENCODEDFound 7 Windows library/API name(s) XOR-encoded with single-byte key 0x60: 'LoadLibraryW', 'LoadLibraryExA', 'GetProcAddress', 'CreateProcessA', 'CreateProcessA', 'CreateProcessW', 'RegOpenKeyExA'
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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 3,460,612 bytes but its declared streams total only 18,081 bytes — 3,442,531 bytes (99%) 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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OLE file has appended executable-looking payload bytes high OLE_APPENDED_PAYLOADOLE compound file contains a large high-entropy region beyond the declared major streams and that region includes shellcode, PE, or loader API markers. This is a payload-carrier signal, not a specific CVE attribution by itself.
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