Office (OLE) / .DOC malware analysis — malicious · cf555b59e6bb959f

MALICIOUS

Office (OLE) / .DOC

279.5 KB Created: 2010-03-02 03:51:00 Authoring application: Microsoft Office Word

MD5: 2964b7a25199709fb7afaa473befeeba SHA-1: 9d2d9bee1471112a5dfe6a79de89af4804b2f8d2 SHA-256: cf555b59e6bb959fc77bfba368030a3efb5195b98e11d1a33a4b72bed3ed68b7

402 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a malicious OLE document containing an embedded PE executable. Heuristics indicate the use of ShellExecute, URLDownloadToFile, LoadLibrary, and GetProcAddress APIs, suggesting the embedded executable is designed to download and execute further payloads. The presence of an embedded executable and the use of these APIs strongly indicate a malware delivery mechanism.

Heuristics 10

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.
Reference to URLDownloadToFile API critical SC_STR_URLDOWNLOAD

Reference to URLDownloadToFile API
Embedded PE executable critical OLE_EMBEDDED_EXE

MZ/PE header found inside document — possible embedded executable
ClamAV: Win.Trojan.Delf-10 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Trojan.Delf-10
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.
Reference to ShellExecute API high SC_STR_SHELLEXEC

Reference to ShellExecute 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
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_office_00003693.exe` `b9fbeb121c34c3a28cd8bf420fd860dde33768a2b92c4321303b4d17002a5ce3`	embedded-pe	Office MZ+PE at offset 0x3693	272237 bytes
Detection ClamAV: Win.Trojan.Delf-10 Obfuscation or payload: likely Carved artifact entropy is 7.86, consistent with packed or encrypted content.
`ole10native_00.bin` `4d9c062f5a65161eca9353c4b9bfac6bc68c26d4045d8100b3bbea4cddc818c9`	ole-package	OLE Ole10Native stream: ObjectPool/_1329046699/Ole10Native	263829 bytes
Detection ClamAV: Win.Trojan.Delf-10 Obfuscation or payload: likely Carved artifact entropy is 7.90, consistent with packed or encrypted content.

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