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

Static analysis result for SHA-256 c871048da67fb794…

MALICIOUS

Office (OOXML) / .DOC

312.1 KB Created: 2021-03-24 18:22:00 UTC Authoring application: Microsoft Office Word 14.0000
MD5: 83fcf28c91981fe497f2f32f88d81c72 SHA-1: dd14002f8e39817decb87d2016387d197c4f5aea SHA-256: c871048da67fb794b94816780b63a647fafe86aea4b3135f73844b883f65f38e
69 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The file is a Microsoft Office document containing an embedded OLE object. Heuristics indicate that this OLE package carries an executable or script file, specifically a JAR file. This suggests the document is a delivery mechanism for a secondary payload. No document body text was available for further analysis.

Heuristics 4

  • Ole10Native package carries executable/script file type high OFFICE_PACKAGE_RISKY_FILE
    OLE Package displayName or fullPath ends in an executable or script-capable extension. Even without UI extension spoofing, embedding a runnable payload inside an Office document is a high-risk delivery pattern.
  • 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
7154650e6a212d0d8d1a2c1c2a5c26b1ee26b903bbba94048d7fe89823f04b64		 ooxml-ole-object OOXML embedded OLE part: word/embeddings/oleObject1.bin 309760 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
a24a27f1a5f97ef1cfc247adc04605c23bc5e4b1d2d63900253d41e92faf1b73		 ole-package OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native 304789 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
7320426b02a69ee184564e14fc1e46f2be12e6563b97915879bca8a8ccf97b1e		 ooxml-emf OOXML EMF part: word/media/image2.emf 5148 bytes

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