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

Static analysis result for SHA-256 043bee93df0c94b1…

MALICIOUS

Office (OOXML) / .DOC

280.2 KB Created: 2022-07-23 20:48:00 UTC Authoring application: Microsoft Office Word 14.0000 First seen: 2022-07-27
MD5: c4032a4a995b1bcd874347966535ef03 SHA-1: 74c650db7bf8e861999d8dbc77b6fc614bed4355 SHA-256: 043bee93df0c94b17f2c52747b3fc0507dfa84c5808a0e9cf34f3ef95ec1b608
84 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The document contains an embedded OLE object which is flagged as a risky package that drops an auto-executable payload, specifically identified as a JAR file. This indicates the document is likely a malicious attachment designed to execute a secondary payload upon opening. The presence of the embedded OLE object and the nature of the dropped artifact strongly suggest an exploitation for client execution.

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
fcdf6dd927566c042dfafb604e6510ae9f96d57bb71862ec22981efa173481d9		 ooxml-ole-object OOXML embedded OLE part: word/embeddings/oleObject1.bin 260608 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
4fc33d85a997d144b086fcaa1291d2214cb62270ba2e60c86a5b30adfc87401a		 ole-package OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native 255829 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
4fb54dbe209fafd83d9acb04ed74d4f50639a8e9cc241e4dc459b0689ea841e5		 ooxml-emf OOXML EMF part: word/media/image2.emf 5464 bytes

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