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

Static analysis result for SHA-256 e0e6cfb965274019…

MALICIOUS

Office (OOXML) / .DOC

823.9 KB Created: 2021-04-20 02:49:00 UTC Authoring application: WPS Office_11.2.0.10101_F1E327BC-269C-435d-A152-05C5408002CA First seen: 2022-11-14
MD5: b1c37be6cf3ecaf84fb914db605e4f59 SHA-1: c965a030ffd4ada2e94a24b35221ac47bf0c312f SHA-256: e0e6cfb96527401953997755e7b94af2b40cdb3603bb2ab0541f84171886731f
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1027 Obfuscated Files or Information

The file is an OOXML document containing an embedded OLE object. Static analysis detected this object as packed malware (Win.Packed.Generickdz-10021599-0). The presence of the embedded OLE object and the malware detection strongly indicate a malicious document designed to deliver a payload. No specific document content or scripts were available for further analysis.

Heuristics 5

  • ClamAV: Win.Packed.Generickdz-10021599-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Packed.Generickdz-10021599-0
  • 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
    • http://www.wps.cn/officeDocument/2013/wpsCustomData

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin
968ef6b81d2a207eb1b840bd5806def66aa0f0437f77f374f353e943d7f56e34		 ooxml-ole-object OOXML embedded OLE part: word/embeddings/oleObject1.bin 835072 bytes
Detection
ClamAV: Win.Packed.Generickdz-10021599-0
Obfuscation or payload: likely
Carved artifact entropy is 7.98, consistent with packed or encrypted content.
ooxml_oleobject_00_ole10native_00.bin
b0f2f96a22d3a8a16eafbd216b22b119aa95f4173ddf466d204d90980e76c67a		 ole-package OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native 826233 bytes
Detection
ClamAV: Win.Packed.Generickdz-10021599-0
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
emf_00.emf
89e6c9e6ca1d625289200d05ced739a0d17d76a0499a5c82c1b8208c43e4e713		 ooxml-emf OOXML EMF part: word/media/image1.emf 7352 bytes

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