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

Static analysis result for SHA-256 0355a43eda3d4d5f…

MALICIOUS

Office (OLE) / .DOC

175.5 KB First seen: 2022-08-12
MD5: 1ca7131db6be49e81f20651705618239 SHA-1: 147cf0188ea84acb11620136e3f2f46d3f207d6f SHA-256: 0355a43eda3d4d5f71b22bcb34f8273658dc53c012b5a5afc30d74d8fe4c9299
62 Risk Score

Malware Insights

MITRE ATT&CK
T1559 Component Object Model Hijacking

The sample is an OLE document containing a package that drops an executable file. The heuristic 'OFFICE_PACKAGE_RISKY_FILE' indicates that the embedded 'ole10native_00.bin' artifact is an auto-executable payload, likely a JAR file. The extracted paths suggest the payload is staged in the user's INetCache or Temp directory.

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
89e99626b53f9d69df7cdeb77ae9eca40d3b9a8c620a6e76615fd479dd42b559
ole-package OLE Ole10Native stream: Ole10Native 175210 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 8.00, consistent with packed or encrypted content.