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

Static analysis result for SHA-256 546549325cb53f66…

MALICIOUS

Office (OOXML) / .DOC

10.2 KB Created: 2023-03-20 18:20:00 UTC Authoring application: Microsoft Office Word 12.0000 First seen: 2023-03-23
MD5: cd265d216aa729b1051f8631185f3520 SHA-1: 703134535747efd6954a9b3104e39ee0d4aeff06 SHA-256: 546549325cb53f665f2bc3bfd65e4ed77ca1edb80b349a54f1f68d11ed91ef25
82 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The sample leverages an OOXML OLE2Link object, indicating exploitation of CVE-2017-0199. This technique is used to load remote content, specifically pointing to the URL https://urlcallinghta6.blogspot.com/atom.xml. The embedded URL is likely used to download and execute a second-stage payload, characteristic of a downloader malware.

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://urlcallinghta6.blogspot.com/atom.xml

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