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

Static analysis result for SHA-256 f0efc48ed72acc15…

MALICIOUS

Office (OOXML) / .DOC

21.3 KB Created: 2017-12-14 13:55:00 UTC Authoring application: Microsoft Office Word 12.0000 First seen: 2022-03-22
MD5: a266c153083af3d3ccad1dd0479b8da0 SHA-1: 9e0193ed6f7fe28e1af84170bb0be42ddb45d299 SHA-256: f0efc48ed72acc15866357b083224d990b133da67260a82a9464886818b024a7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The sample is an OOXML document that leverages an OLE object to load external content. Heuristics indicate a relation to CVE-2017-0199, a known vulnerability for remote code execution. The document attempts to download a payload from the URL https://nm1.me/qyzfz. This indicates the document's purpose is to exploit this vulnerability to deliver a secondary malicious payload.

Heuristics 3

  • 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 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 https://nm1.me/qyzfz
    • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
emf_00.emf
c3d4c5dfe019e61c614b81733887bf8fd99cb8f2410d9a04904661c77c0a64e7		 ooxml-emf OOXML EMF part: word/media/image1.emf 49184 bytes

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