Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 b95a681f8b6e2567…

MALICIOUS

Office (OOXML)

467.4 KB Created: 2018-05-23 23:39:00 UTC Authoring application: Microsoft Office Word 14.0000 First seen: 2019-04-18
MD5: f6d77e601958aecb9118cc47db99d290 SHA-1: 42bca098b145cc2e9a7ee1f73efcaf77451939c6 SHA-256: b95a681f8b6e2567395501818a9975d774efb94f6fe2a56b8563a82459f45910
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The sample contains a critical heuristic firing for a malicious DDE command, indicating it attempts to execute a PowerShell command. This command is designed to download and execute a second-stage payload named 'MSWORD.exe' from the URL http://bollrathelektronik.de/MSWORD.exe. The document body appears to be a product list, likely a lure to entice the user to open the malicious document.

Heuristics 3

  • ClamAV: Doc.Exploit.DDEautoexec-6346603-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Exploit.DDEautoexec-6346603-1
  • 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://bollrathelektronik.de/MSWORD.exe In document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingCanvasIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/markup-compatibility/2006In document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/officeDocument/2006/relationshipsIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/officeDocument/2006/mathIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingDrawingIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawingIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/wordprocessingml/2006/mainIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingGroupIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingInkIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2006/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingShapeIn document text (OOXML body / shared strings)

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