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

Static analysis result for SHA-256 a746a8ff3cfcb4e3…

MALICIOUS

Office (OOXML) / .XLSX

73.8 KB Created: 2021-03-17 10:32:53 UTC Authoring application: Microsoft Excel 16.0300
MD5: 57d41ee574e8cfb221832dda3dc9172a SHA-1: 99d8d79ca962e86dbe3fc8b50ec961ad5d08b756 SHA-256: a746a8ff3cfcb4e39252aebe6902dfdd2e2bb8a87d07bfba7e03d629b8482115
68 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The OOXML_CLICKABLE_IMAGE_FORM_LURE heuristic indicates the presence of a phishing lure using a clickable image that directs to a form. This, combined with the external hyperlink, suggests the document is designed to lead the user to a Typeform page, likely for credential harvesting. No scripts were extracted, limiting further analysis of the payload.

Heuristics 3

  • OOXML clickable image phishing/form lure critical OOXML_CLICKABLE_IMAGE_FORM_LURE
    Workbook uses a large embedded image as the visible document body and attaches a click-through external hyperlink to that image. The target is a form/collection service or the drawing contains download/view lure text, which is a common credential or document-phishing pattern rather than benign workbook data.
  • External hyperlinks (1) low OOXML_EXTERNAL_HYPERLINKS
    Document contains 1 external hyperlink — clickable URLs are stored as external relationships. First target: https://esfmbc0cvh7.typeform.com/to/ejV5b669
  • 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 https://esfmbc0cvh7.typeform.com/to/ejV5b669
    • http://schemas.openxmlformats.org/spreadsheetml/2006/main
    • http://schemas.openxmlformats.org/officeDocument/2006/relationships
    • http://schemas.openxmlformats.org/markup-compatibility/2006
    • http://schemas.microsoft.com/office/spreadsheetml/2009/9/ac
    • http://schemas.microsoft.com/office/spreadsheetml/2014/revision
    • http://schemas.microsoft.com/office/spreadsheetml/2015/revision2
    • http://schemas.microsoft.com/office/spreadsheetml/2016/revision3

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