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

Static analysis result for SHA-256 ce9d12b1581de399…

MALICIOUS

Office (OLE) / .DOC

25.5 KB Created: 2010-08-07 02:01:00 Authoring application: Microsoft Office Word
MD5: 85f5b1acc476a432f1f815ad0353cdd6 SHA-1: 4c721ed7d31ed375cb17c2a3ba83da8389a0ff54 SHA-256: ce9d12b1581de3996aaa28124782957cb5fff6785e238bb3aa53c912dd2a0d37
300 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking: Component Object Model

The file is a Microsoft Office document containing an embedded executable file (MZ header at offset 0x309B). This indicates a likely attempt to deliver a secondary payload. The presence of Ole10Native further suggests exploitation of OLE vulnerabilities. The embedded executable was detected by ClamAV as Win.Downloader.24465-1, confirming its malicious nature.

Heuristics 6

  • OLE with Ole10Native — possible CVE-2026-21514 exploitation high CVE likely CVE_2026_21514
    Document contains a Word OLE object with Ole10Native plus executable, PE, or risky remote-link indicators. CVE-2026-21514 exploits OLE metadata validation; this stronger structure is treated as likely exploitation.
  • Embedded PE executable critical OLE_EMBEDDED_EXE
    MZ/PE header found inside document — possible embedded executable
  • ClamAV: Win.Downloader.24465-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Downloader.24465-1
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • x86 GetPC stub (CALL $+5; POP EAX) high SC_GETPC_CALL
    x86 GetPC stub (CALL $+5; POP EAX)
  • PEB access via FS segment (x86) high SC_PEB_ACCESS
    PEB access via FS segment (x86)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_office_0000309b.exe
ca513e7a9715e5795895182c321a6d15aa58933f539454b14c892875e79150b9		 embedded-pe Office MZ+PE at offset 0x309B 13669 bytes
Detection
ClamAV: Win.Downloader.24568-1
Obfuscation or payload: unlikely
ole10native_00.bin
2f1a7327578bfc1aab89158ac37b2bba71c9d86206987266881fae608939969d		 ole-package OLE Ole10Native stream: ObjectPool/_1342640831/Ole10Native 9885 bytes
Detection
ClamAV: Win.Downloader.24465-1
Obfuscation or payload: unlikely

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