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

Static analysis result for SHA-256 183c54fd575a602d…

MALICIOUS

Office (OOXML) / .DOC

329.5 KB Created: 2021-02-23 07:09:00 UTC Authoring application: Microsoft Office Word 12.0000
MD5: 84ce555c09341f96bf33c8affa21e869 SHA-1: 2fa8bdfb4f6062e6862483c3f4d0b7227dcd8933 SHA-256: 183c54fd575a602d42518a018689dbd9d7701bc9e550a2d53157a7c4ca37728c
102 Risk Score

Malware Insights

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

The sample contains an embedded OLE object that references an external URL, indicating an attempt to exploit CVE-2017-0199. This technique is commonly used to download and execute a second-stage payload. The presence of the external OLE object points to a malicious document designed to lure users into executing remote content.

Heuristics 4

  • OOXML OLE2Link remote loader — CVE-2017-0199 related high CVE related CVE_2017_0199_RELATED
    Document contains an o:OLEObject Type=Link whose external oleObject relationship points to a remote URL. This is the OOXML OLE2Link activation shape associated with CVE-2017-0199 delivery, but the local file does not expose URL Moniker bytes or a weaponized extension/content type, so the exact CVE cannot be proven statically.
  • External OLE object relationship high OOXML_EXTERNAL_OLE_OBJECT
    Document contains an oleObject relationship whose target is an external HTTP(S) URL. Office resolves this through OLE/object update paths rather than as a normal user-clicked hyperlink.
  • Embedded OLE object medium OOXML_OLE_OBJECT
    Document contains an embedded OLE object
  • 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://rzd.ac/6gG9EC6
    • http://schemas.openxmlformats.org/markup-compatibility/2006
    • http://schemas.openxmlformats.org/officeDocument/2006/relationships
    • http://schemas.openxmlformats.org/officeDocument/2006/math
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing
    • http://schemas.openxmlformats.org/wordprocessingml/2006/main
    • http://schemas.microsoft.com/office/word/2006/wordml

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin
3fe3aa312b041a603a4fb986461ccf55879da2b62f35e27ef335a300598ade0e		 ooxml-ole-object OOXML embedded OLE part: word/embeddings/Microsoft_Office_Word_Macro-Enabled_Document1.docm 122019 bytes
emf_00.emf
4150c3c73dd6bc5f9f11764ea256d15d05361ec8b7c56c92854edafb80753876		 ooxml-emf OOXML EMF part: word/media/image2.emf 1127736 bytes
emf_01.emf
6f1cfa8184de5171a742653114ae04bf9f7f9d13a489263848d75c79cd960f9e		 ooxml-emf OOXML EMF part: word/media/image1.emf 41564 bytes

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