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

Static analysis result for SHA-256 107915dca4b1dfe5…

MALICIOUS

Office (OOXML) / .DOCM

12.0 KB Created: 2017-09-24 17:29:00 UTC Authoring application: Microsoft Office Word 14.0000 First seen: 2022-03-22
MD5: 62d2a5b95c0a1658390c1404debba0d2 SHA-1: 8129cc9bb4c7c4fc80b5f21f6e22745d24ea6721 SHA-256: 107915dca4b1dfe56c9986b4c8a593e60f45b9072b6d8863ff379208a93fa54a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample is a DOCM file that contains an external OLE object pointing to a remote URL, indicating an attempt to exploit CVE-2017-8759. This vulnerability allows the document to download and execute a secondary payload from the specified URL, likely leading to further compromise.

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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