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

Static analysis result for SHA-256 978ef2598a67ed3f…

MALICIOUS

Office (OOXML) / .DOC

248.6 KB Created: 2022-09-11 20:41:00 UTC Authoring application: Microsoft Office Word 14.0000 First seen: 2022-09-14
MD5: 4c78e5e84dbcfa20fd57ec9c3fd5b5a8 SHA-1: a13b97d92f8dceec64c8ac12885c871f5199667f SHA-256: 978ef2598a67ed3fd18cf7f79a716fa34750f69057626826cab906d3114faa17
84 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking T1129 Execution through API

The file is a malicious OOXML document containing an embedded OLE object. This object, identified as an Ole10Native package, is configured to drop an executable payload, specifically indicated by the presence of a '.jar' extension. The embedded OLE object and the potential execution of a JAR file suggest a downloader or dropper functionality.

Heuristics 4

  • 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.
  • Embedded OLE object medium OOXML_OLE_OBJECT
    Document contains an embedded OLE object
  • 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.microsoft.com/office/word/2010/wordprocessingCanvas
    • http://schemas.openxmlformats.org/markup-compatibility/2006
    • http://schemas.openxmlformats.org/officeDocument/2006/relationships
    • http://schemas.openxmlformats.org/officeDocument/2006/math
    • http://schemas.microsoft.com/office/word/2010/wordprocessingDrawing
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing
    • http://schemas.openxmlformats.org/wordprocessingml/2006/main
    • http://schemas.microsoft.com/office/word/2010/wordml
    • http://schemas.microsoft.com/office/word/2010/wordprocessingGroup
    • http://schemas.microsoft.com/office/word/2010/wordprocessingInk
    • http://schemas.microsoft.com/office/word/2006/wordml
    • http://schemas.microsoft.com/office/word/2010/wordprocessingShape

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin
04fbb225fff7668a844fee594adec58357e262cf231601db9ca664b998bc996e		 ooxml-ole-object OOXML embedded OLE part: word/embeddings/oleObject1.bin 199168 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.97, consistent with packed or encrypted content.
ooxml_oleobject_00_ole10native_00.bin
346e58d5b4269732e03e411f0ff55b71279bf1d3489d3da8c0ea702ce010bbb7		 ole-package OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native 194426 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 8.00, consistent with packed or encrypted content.
emf_00.emf
7419e71af0629db452d4e85939e5bdb1f4a19db4c26e74964ae90fe77e07f4a7		 ooxml-emf OOXML EMF part: word/media/image3.emf 5464 bytes

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