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

Static analysis result for SHA-256 cef98b5dd1d1d3c5…

MALICIOUS

Office (OLE) / .DOC

161.0 KB Created: 2021-10-27 13:39:00 Authoring application: Microsoft Office Word First seen: 2021-10-31
MD5: 506bd15cf3b849faf42e10d45d2be5f1 SHA-1: d82dbf177b412501feb5f74eb861029153e326cd SHA-256: cef98b5dd1d1d3c5c81b57a92f7e4b025d7810eabe3e83d3929787b6342d012a
64 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The file is an OLE document containing an embedded OLE package (ole10native_00.bin) which is flagged as risky due to its executable/script content. This suggests the document is designed to drop and execute a secondary payload. The embedded URL is not malicious, and no scripts were extracted.

Heuristics 3

  • Ole10Native package drops an auto-executable payload critical OFFICE_PACKAGE_RISKY_FILE
    OLE Package displayName or fullPath ends in a directly auto-executable extension (a runnable binary or a script the default shell host runs on double-click). Embedding such a payload inside an Office document has no benign authoring use — it is a malware-delivery dropper.
  • 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 In document text (OLE body)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ole10native_00.bin ole-package OLE Ole10Native stream: ObjectPool/_1696857974/Ole10Native 127856 bytes
SHA-256: 8a40730be7ec9671472398455e6d62c58ed97dac4ff56ab2e2f2083d68119b4b
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 8.00, consistent with packed or encrypted content.
ole10native_00_bzndt6lkUFlCQiLhPU1libwtKkELGUYpFHSe.jar ole-package-payload OLE Ole10Native payload: ObjectPool/_1696857974/Ole10Native; display_name=bzndt6lkUFlCQiLhPU1libwtKkELGUYpFHSe.jar; full_path=C:\Users\MICROS~1\AppData\Local\Temp\{65B38F81-3E68-42C7-9779-9CEB045E51CF}\bzndt6lkUFlCQiLhPU1libwtKkELGUYpFHSe.jar; temp_path=; def_file= 127013 bytes
SHA-256: ebaa5a5bc7b6609d6614add68b3fbc535359f7b1ba1cecc749f0b055bd7fe99e