Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 9735049b1ef329ad…

MALICIOUS

Office (OLE)

155.4 KB
MD5: 5eb358cef8983cd6eff2fa487b3510fd SHA-1: eb6812af0074621df9d73ff1f0429b9167f51432 SHA-256: 9735049b1ef329ad579530e1b8c09ee969b91dcd453c9bb94013abc65921b94d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1059 Command and Scripting Interpreter

The OLE document exhibits a significant amount of slack space (92%), which is anomalous and often indicative of packed or obfuscated malicious content. Furthermore, a high-severity heuristic detected a reference to the CreateProcess API, a common function used by malware to launch new processes. While no specific malicious behavior was directly observed, these indicators suggest the file is likely a malicious OLE document intended to execute a payload.

Heuristics 3

  • x86 GetPC stub (CALL $+5; POP EAX) high SC_GETPC_CALL
    x86 GetPC stub (CALL $+5; POP EAX)
  • Reference to CreateProcess API high SC_STR_CREATEPROCESS
    Reference to CreateProcess API
  • OLE document has large unaccounted-for region high OLE_SLACK_ANOMALY
    OLE file is 159,156 bytes but its declared streams total only 12,288 bytes — 146,868 bytes (92%) 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).