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

Static analysis result for SHA-256 8dce50e9945be58f…

MALICIOUS

Office (OOXML) / .DOC

10.2 KB Created: 2023-02-20 19:29:00 UTC Authoring application: Microsoft Office Word 12.0000 First seen: 2023-02-23
MD5: f7ae9b90485186d4ae101979321215cc SHA-1: 0d038f09dcb22f07305a856964d822df22a4e66d SHA-256: 8dce50e9945be58f1a28add9bb29f0774a1adb1f1e92a2f9c6f9fd30491260a1
202 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The sample leverages known Microsoft Office vulnerabilities, specifically CVE-2017-0199 and CVE-2022-30190, to fetch and execute content from the external URL https://office365onlline.blogspot.com/p/publisher.html. This indicates a downloader or exploit delivery mechanism designed to compromise the user's system.

Heuristics 5

  • CVE-2022-30190 — Follina stage-1 external HTML oleObject critical CVE likely CVE_2022_30190
    External OLEObject relationship targets a remote .html with the Follina delivery shape (oleObject -> HTTP(S) HTML with trailing Moniker '!'). In live Follina samples the ms-msdt: trigger is served by the remote HTML, not the document itself.
  • MSHTML-style external object relationship critical CVE related OFFICE_MSHTML_EXTERNAL_OBJECT
    External relationship to https://office365onlline.blogspot.com/p/publisher.html — exploitable MSHTML/CAB/MHTML/HTA-style Office attack surface
  • 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://office365onlline.blogspot.com/p/publisher.html

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