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

Static analysis result for SHA-256 7859fd95c60a0d76…

MALICIOUS

Office (OOXML) / .DOC

252.5 KB Created: 2022-09-11 20:26:00 UTC Authoring application: Microsoft Office Word 14.0000 First seen: 2022-09-12
MD5: 7e8133cf5f56adcfafb9bc91390c9fe7 SHA-1: 2cc6471245901e51565ad69df6b8586629965cf1 SHA-256: 7859fd95c60a0d76fa99eb42277501b20f76a377c1395b504acff5dd22533027
84 Risk Score

Malware Insights

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

The sample is a malicious OOXML document containing an embedded OLE object. This object is identified as a risky file package that drops an auto-executable payload, specifically a JAR file. The presence of the embedded OLE object and its nature as a dropper strongly suggests an attempt to execute a secondary payload upon opening the document.

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
543eb377d95104a39c65e164349fc94ce5fe2cd515ff1d9a5e2e9ec4e8473348		 ooxml-ole-object OOXML embedded OLE part: word/embeddings/oleObject1.bin 169472 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.96, consistent with packed or encrypted content.
ooxml_oleobject_00_ole10native_00.bin
6958f2877f6b36d7af82aedd969f1b504027a35e8e1fe2fea9ace946ea76d2fb		 ole-package OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native 165046 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
89cb85e37e9623cd2b091b539c6e1280aa39e21cf7b6b0a54f5fda180a197b98		 ooxml-emf OOXML EMF part: word/media/image3.emf 5464 bytes

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