Malicious Office (OLE) / .SEN — malware analysis report

Static analysis result for SHA-256 60b95e3c4a8e20cd…

MALICIOUS

Office (OLE) / .SEN

156.8 KB Created: 2005-06-29 18:14:00 Authoring application: Microsoft Word 10.0
MD5: 3d2e35dd0fff4b7a076dfb38c123c87b SHA-1: bd81e8897b91ebfafcaf183eb77a47b1f9c8601f SHA-256: 60b95e3c4a8e20cd3102293ffcf34621ccfcbfc464358b7886ffd28ea7aa4a7c
360 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The sample exhibits critical heuristic firings related to process injection (WriteProcessMemory, CreateRemoteThread) and library loading (LoadLibrary, GetProcAddress), indicating an attempt to execute malicious code. The OLE slack anomaly suggests potential obfuscation or padding within the file structure. While no specific document body content or scripts were clearly extracted, the API calls strongly suggest the file is designed to download and execute a secondary payload.

Heuristics 9

  • Reference to WriteProcessMemory API critical SC_STR_WRITEPROCESSMEMORY
    Reference to WriteProcessMemory API
  • Reference to CreateRemoteThread API critical SC_STR_CREATEREMOTETHREAD
    Reference to CreateRemoteThread API
  • Reference to WinExec API high SC_STR_WINEXEC
    Reference to WinExec API
  • Reference to CreateProcess API high SC_STR_CREATEPROCESS
    Reference to CreateProcess API
  • Reference to LoadLibrary API high SC_STR_LOADLIBRARY
    Reference to LoadLibrary API
  • Reference to GetProcAddress API high SC_STR_GETPROCADDRESS
    Reference to GetProcAddress API
  • OLE document has large unaccounted-for region high OLE_SLACK_ANOMALY
    OLE file is 160,571 bytes but its declared streams total only 20,632 bytes — 139,939 bytes (87%) 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).
  • Reference to VirtualAlloc API medium SC_STR_VIRTUALALLOC
    Reference to VirtualAlloc API
  • Reference to VirtualProtect API medium SC_STR_VIRTUALPROTECT
    Reference to VirtualProtect API

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