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

Static analysis result for SHA-256 2838f552f0bf64ff…

MALICIOUS

Office (OOXML) / .DOC

279.9 KB Created: 2022-07-26 09:32:00 UTC Authoring application: Microsoft Office Word 14.0000 First seen: 2022-07-27
MD5: b63de51d4e9fc4577c76c0895beb615b SHA-1: 7ad9633409a9265db40bf88dec6129301d3046c6 SHA-256: 2838f552f0bf64ff546d31528d0dab1020f34e34e7382989bbbf0e7af2401477
84 Risk Score

Malware Insights

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

The file is a malicious OOXML document containing an embedded OLE object. This object is flagged as a risky file package that drops an auto-executable payload, specifically identified as a JAR file. The presence of these embedded artifacts strongly suggests an attempt to deliver and execute a secondary malicious component.

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
34111c9fa063165159a8076d2126d3af929fdd84f8a617bdbe596243d578eca9		 ooxml-ole-object OOXML embedded OLE part: word/embeddings/oleObject1.bin 259072 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.98, consistent with packed or encrypted content.
ooxml_oleobject_00_ole10native_00.bin
8156f476802853fafbcee8e3ab7ed75e679f9b7e4e5f3d25f777d85ce4e66a6c		 ole-package OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native 254224 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
aa3b60c5f487e097617ded117b5ddec100cc060e0097ac10e0613d513bf8333e		 ooxml-emf OOXML EMF part: word/media/image2.emf 5464 bytes

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