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

Static analysis result for SHA-256 d8ab152fc343d678…

MALICIOUS

Office (OLE) / .DOC

167.5 KB First seen: 2022-09-20
MD5: d7ace48b159e428aa31d46f9846735cc SHA-1: 48d00c9bb5f632cd0a373f48b39848c88097fa4b SHA-256: d8ab152fc343d67857859adb61b2415508bcb55c9c79344e3dd4eed134307fc9
62 Risk Score

Malware Insights

MITRE ATT&CK
T1559 Component Object Model Hijacking T1559.001 Component Object Model Hijacking: Ole10Native

The critical heuristic 'OFFICE_PACKAGE_RISKY_FILE' indicates that an Ole10Native package within the document is configured to drop an auto-executable payload, specifically a JAR file. This strongly suggests the document is a dropper designed to download and execute further malicious content. The embedded JAR file, named '04.jar', is the primary artifact of this stage.

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
21c41e332e2689cc93377cbf6ae92a2ff5d687e5b6915d5965eec19ec7c43e40
ole-package OLE Ole10Native stream: Ole10Native 167109 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 8.00, consistent with packed or encrypted content.