MALICIOUS
100
Risk Score
Malware Insights
MITRE ATT&CK
T1027 Obfuscated Files or Information
The sample exhibits characteristics of a malicious document, specifically the presence of XOR-encoded strings and a significant amount of slack space within the OLE structure. These techniques are commonly used for obfuscation and evasion. While no specific payload or delivery mechanism is directly evident from the provided heuristics and document body, the combination strongly suggests malicious intent, likely to conceal a secondary stage.
Heuristics 2
-
XOR-encoded strings (key 0x63) critical SC_XOR_ENCODEDFound 4 Windows library/API name(s) XOR-encoded with single-byte key 0x63: 'LoadLibraryA', 'CreateProcessA', 'ExitProcess ', 'CreateFileA '
-
OLE document has large unaccounted-for region high OLE_SLACK_ANOMALYOLE file is 196,424 bytes but its declared streams total only 20,635 bytes — 175,789 bytes (89%) 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).
Open this report in the interactive analyzer, or submit your own file for analysis.