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

Static analysis result for SHA-256 1003382a8adab71e…

MALICIOUS

Office (OLE) / .DOC

156.0 KB First seen: 2022-07-28
MD5: 691010133feda94e8ab92d6785acce98 SHA-1: 596510ab8b76a9442a138548c1c96a22da913eee SHA-256: 1003382a8adab71ecc80613f53f8f82f68944584ce76cc22705df680632ae1ba
62 Risk Score

Malware Insights

MITRE ATT&CK
T1559 Component Object Model Hijacking T1559.001 Component Object Model Hijacking: DLL Side-Loading

The sample is an OLE document that contains an embedded 'Ole10Native' package. This package is designed to drop an executable JAR file, indicated by the heuristic 'OFFICE_PACKAGE_RISKY_FILE'. The embedded JAR file, named 'AOYNAIVIOLUMWPUYVBKRUVBMJAPSCGBROOOQJMQLLTOPLYMCBRMWRNTQQK.JAR', is likely a second-stage payload. The presence of this embedded executable suggests an attempt to download and execute further malicious content.

Heuristics 2

  • 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ole10native_00.bin
38655f8297571c17eaa3a2257c39abd7f665a107d95bea3638c677f479384eb0
ole-package OLE Ole10Native stream: Ole10Native 155141 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 8.00, consistent with packed or encrypted content.