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

Static analysis result for SHA-256 3ccc07a8c9779d6c…

MALICIOUS

Office (OOXML) / .DOC

13.9 KB Created: 2017-09-24 17:26:00 UTC Authoring application: Microsoft Office Word 14.0000 First seen: 2022-03-22
MD5: d047c628bcb234356b76e19507dc32da SHA-1: 44ad2aaaee1993a5a8cf5c4698dcf6a019e9ba17 SHA-256: 3ccc07a8c9779d6c6bfba1b3d695d22a6ec1a7b246be039dae1a4bdfc0c033b0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File

The sample is a Microsoft Office document that contains an external OLE object pointing to a remote URL. Heuristics indicate this is related to CVE-2017-8759, a vulnerability that allows for remote code execution when a user opens a malicious document. The embedded URL is the primary indicator of compromise, likely serving as a dropper for a second-stage payload.

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://34.221.57.122/ok/file.doc
    • http://schemas.microsoft.com/office/word/2010/wordprocessingCanvas
    • http://schemas.openxmlformats.org/markup-compatibility/2006
    • http://schemas.openxmlformats.org/officeDocument/2006/relationships
    • http://schemas.openxmlformats.org/officeDocument/2006/math
    • http://schemas.microsoft.com/office/word/2010/wordprocessingDrawing
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing
    • http://schemas.openxmlformats.org/wordprocessingml/2006/main
    • http://schemas.microsoft.com/office/word/2010/wordml
    • http://schemas.microsoft.com/office/word/2010/wordprocessingGroup
    • http://schemas.microsoft.com/office/word/2010/wordprocessingInk
    • http://schemas.microsoft.com/office/word/2006/wordml
    • http://schemas.microsoft.com/office/word/2010/wordprocessingShape

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