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

Static analysis result for SHA-256 559ead7f1eaa98c7…

MALICIOUS

Office (OOXML) / .DOC

392.0 KB Created: 2023-02-26 21:57:00 UTC Authoring application: Microsoft Office Word 12.0000 First seen: 2023-03-07
MD5: 3cf468ef45c3df9ce4241eb38e723711 SHA-1: a1cc593473a4356a31dc600f179bd6882425a911 SHA-256: 559ead7f1eaa98c717c6d285c30b23bd7ce6e40b532010fc60ccaf926a0564cc
82 Risk Score

Malware Insights

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

The sample leverages OOXML OLE2Link and external OLE object relationships, indicating an attempt to exploit CVE-2017-0199 or a similar vulnerability. This mechanism is designed to download and execute a remote payload from the identified URLs, likely leading to further system compromise.

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://urlcallinghta2.blogspot.com/atom.xml
    • https://xllcallingkiki.blogspot.com/atom.xml

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