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

Static analysis result for SHA-256 f3e6621928875a32…

MALICIOUS

Office (OOXML) / .DOC

269.7 KB Created: 2023-02-15 12:43:00 UTC Authoring application: Microsoft Office Word 12.0000 First seen: 2023-08-03
MD5: df9fe95e3fd54568a935b92e25b88024 SHA-1: ff84a61688475d484daea4c9a096b0d23c0c3577 SHA-256: f3e6621928875a322ee7230ccf186bdaa5609118c4a6d1c2f4026adfb8e88744
82 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1059 Command and Scripting Interpreter

The sample leverages CVE-2017-0199, a known vulnerability related to OOXML OLE2Link remote loading. This indicates the document is designed to fetch and execute content from an external URL, specifically 'https://huskidkifklaoksikfkfijsju.blogspot.com/atom.xml'. The presence of an external OLE object further supports this attack vector, suggesting a downloader mechanism.

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 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
    • https://huskidkifklaoksikfkfijsju.blogspot.com/atom.xml
    • https://73cceb63-7ecd-45e2-9eab-f8d98aab177f.usrfiles.com/ugd/73cceb_b5b6005e2aa74cf48cd55dca1a2ff093.docx

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