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

Static analysis result for SHA-256 fc824ef49af6cac8…

MALICIOUS

Office (OOXML) / .DOC

29.1 KB Created: 2023-02-22 14:06:00 UTC Authoring application: Microsoft Office Word 12.0000 First seen: 2023-02-22
MD5: 52955a2da4d32e2a577bf94993d36404 SHA-1: c84f0e027e604a53dedcc6e444f9749bed5db9b3 SHA-256: fc824ef49af6cac81f18a79bc29612b15e22ca985fe92945cf43551b15ad91bc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution T1059 Command and Scripting Interpreter

The sample is an OOXML document identified as malicious. It contains an external OLE object that references the URL http://192.3.101.154/O0-O.doc. This is indicative of an exploit attempt, likely related to CVE-2017-8759, designed to trick the user into downloading and executing a secondary payload from the specified URL.

Heuristics 3

  • OOXML OLE2Link remote document — CVE-2017-8759 related high CVE related CVE_2017_8759_RELATED
    Document contains an o:OLEObject Type=Link whose external oleObject relationship fetches a remote Office-looking document. That is the OOXML OLE2Link staging shape used by CVE-2017-8759 campaigns when the remote document/WSDL supplies the SOAP moniker payload; the local file alone does not contain the WSDL body needed for an exact match.
  • 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://192.3.101.154/O0-O.doc
    • 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
8552c78a88239f93b52ded835eac4544bcd8573b7b4b7dee3caf776496cb319f		 ooxml-emf OOXML EMF part: word/media/image1.emf 39096 bytes

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