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

Static analysis result for SHA-256 ab563d317842f89e…

MALICIOUS

Office (OOXML) / .DOCX

18.7 KB Created: 2021-11-29 05:33:00 UTC Authoring application: Microsoft Office Word 15.0000
MD5: adcaf3f9be39d9759a1da871251788a4 SHA-1: fe8b5f040b4c6281458123b7ecb8550e18aedca3 SHA-256: ab563d317842f89ea678c1fa6f25c9f0c871123527b35d6f0467860e70360825
62 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The critical heuristic firing indicates a malicious DDE command embedded within the document. This command executes PowerShell to download and run a VBScript from the URL http://62.171.172.199:80/ab.vbs. The DDE command itself is also provided as an IOC. This indicates a likely spearphishing attachment designed to deliver a secondary payload.

Heuristics 2

  • Malicious DDE command critical OOXML_DDE_MALICIOUS
    DDE field in word/document.xml launches a dangerous executable: \\Microsoft\\Office\\MSWord.exe\\..\\..\\..\\..\\WINDOWS\\sy
  • 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://62.171.172.199:80/ab.vbs
    • 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/2012/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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