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

Static analysis result for SHA-256 e31af2802b761ea1…

MALICIOUS

Office (OLE) / .DOC

388.0 KB Created: 2021-11-01 09:44:00 Authoring application: Microsoft Office Word First seen: 2021-11-07
MD5: eb9a9a9888f331c7029daf99a8b53d80 SHA-1: e01d859aebe7b4794c801adac06f448c0ea73129 SHA-256: e31af2802b761ea10e2133bb52ecac110ef691d616989eaecc95b9a8ff0eaed6
64 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The file is a Microsoft Word document containing an embedded OLE package. Heuristics indicate this package carries an executable or script file, specifically identified as a '.jar' file. This suggests the document is designed to drop and potentially execute a secondary payload. The embedded URL is a standard schema URL and not considered malicious.

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/_1697275893/Ole10Native 357989 bytes
SHA-256: 0b97ed2c8f2838b5f267dee7fe554b03efc5a5ad02a86634b62fe6313f1d583e
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.98, consistent with packed or encrypted content.
ole10native_00_PodRiuaaK5a2GWBVFJobYQmiAa4A6JNf57.jar ole-package-payload OLE Ole10Native payload: ObjectPool/_1697275893/Ole10Native; display_name=PodRiuaaK5a2GWBVFJobYQmiAa4A6JNf57.jar; full_path=C:\Users\MICROS~1\AppData\Local\Temp\{7EDA9402-69C1-48F5-8F9F-0CF3F101230E}\PodRiuaaK5a2GWBVFJobYQmiAa4A6JNf57.jar; temp_path=; def_file= 357164 bytes
SHA-256: 244d94b05339a83748d2fdb0c9b47373b22f1f8e875d3203059a3ec861502e4f