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

Static analysis result for SHA-256 d80fb486ac5ecde3…

MALICIOUS

Office (OOXML) / .DOC

290.8 KB Created: 2022-09-11 20:43:00 UTC Authoring application: Microsoft Office Word 14.0000 First seen: 2022-09-14
MD5: a17fc6086a417a10c3f8ef75b70c8a91 SHA-1: 3d4b7b3bc75f679408d80e691456baf1ac2643c5 SHA-256: d80fb486ac5ecde32137098e7c6965ad8c5f46eabb55cd7fbc502237973af32f
84 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

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 the document's purpose is 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
1844b0a45b57925a77a0b0aeb5e307079a50490211cf778aea8ab89dc10abaea		 ooxml-ole-object OOXML embedded OLE part: word/embeddings/oleObject1.bin 189440 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
ec16b7806b68995cac9f31f58ebc5ba08ea5e74e5a4f805a15e6de42f9961358		 ole-package OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native 184925 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
bfae1581043389bbc8cace91be9d9788e6d133228f838ab3283e3ebfa09410e0		 ooxml-emf OOXML EMF part: word/media/image3.emf 5464 bytes

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