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

Static analysis result for SHA-256 093e8f9bb629b61a…

MALICIOUS

Office (OOXML) / .DOC

328.7 KB Created: 2025-01-21 04:25:00 UTC Authoring application: Microsoft Office Word 15.0000
MD5: 3e80952cd95eab2fb68521115f2eacff SHA-1: ad0f84f9846a0ae52d0401d9c9a2e015a7e371b5 SHA-256: 093e8f9bb629b61a5c8bcf53f87226481c2c1b85288242f8f086cea89551d324
144 Risk Score

Malware Insights

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

The file contains an embedded OLE object, which is a critical heuristic finding. ClamAV signatures indicate the embedded object is 'Win.Tool.WebBrowserPassView-9831120-0', suggesting the document is a lure to execute a credential-stealing tool. The document body presents a fake job opportunity and a confidentiality notice to trick the user into interacting with the malicious object.

Heuristics 5

  • ClamAV: Win.Tool.WebBrowserPassView-9831120-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Tool.WebBrowserPassView-9831120-0
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • 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/2012/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
7832095548ec444e54aa2ce9f6370954743ea67c448f8fd0e7f41f0f920d2ea2		 ooxml-ole-object OOXML embedded OLE part: word/embeddings/oleObject1.bin 298496 bytes
Detection
ClamAV: Win.Tool.WebBrowserPassView-9831120-0
Obfuscation or payload: likely
Carved artifact entropy is 7.98, consistent with packed or encrypted content.
ooxml_oleobject_00_ole10native_00.bin
1cb593a33527381ea39b84d39dfa821df254539595d3ac8f141f0e9d807e13d7		 ole-package OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native 293479 bytes
Detection
ClamAV: Win.Tool.WebBrowserPassView-9831120-0
Obfuscation or payload: likely
Carved artifact entropy is 8.00, consistent with packed or encrypted content.
emf_00.emf
422fb5abcdd62107da9d98871c2d1a998664cebf6581f4314f71fe1233bc1007		 ooxml-emf OOXML EMF part: word/media/image1.emf 5616 bytes

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