Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 d6f0800534cec3bd…

MALICIOUS

Office (OOXML)

19.7 KB Created: 2021-05-21 06:05:00 UTC Authoring application: Microsoft Office Word 16.0000 First seen: 2021-06-20
MD5: 224ef7b4ac7841d3e632df07d1cbea2b SHA-1: 2f13bc3bf9aebee888a97859b8c334ed3dad68af SHA-256: d6f0800534cec3bd19d2ed74bac01dbbe16a52168c69005da5c1c0d9920be16c
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File T1059.007 JavaScript

The sample utilizes OOXML_REMOTE_TEMPLATE and OOXML_EXTERNAL_REL heuristics, indicating an attempt to inject a remote template from the URL http://185.251.89.153/DESKTOP-ST7LSDE/gloves/claimed.dot. The document body, though truncated, discusses epidemiological situations and quarantine measures, likely serving as a lure. The presence of an external hyperlink to a news article further supports a social engineering pretext. The primary attack vector appears to be tricking the user into downloading and executing a malicious template.

Heuristics 4

  • Remote template injection high OOXML_REMOTE_TEMPLATE
    Document references a remote template URL (http://185.251.89.153/DESKTOP-ST7LSDE/gloves/claimed.dot) — a common remote-template-injection vector used by Hancitor, Emotet and many phishing campaigns. Word can fetch and apply the remote template; macros in that template may execute depending on Office policy and trust state.
  • External relationship medium OOXML_EXTERNAL_REL
    External target in word/_rels/settings.xml.rels: http://185.251.89.153/DESKTOP-ST7LSDE/gloves/claimed.dot
  • External hyperlinks (1) low OOXML_EXTERNAL_HYPERLINKS
    Document contains 1 external hyperlink — clickable URLs are stored as external relationships. First target: https://news.rbc.ua/rus/society/kabmin-uzhestochil-vezd-ukrainu-teper-nuzhen-1616485737.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://185.251.89.153/DESKTOP-ST7LSDE/gloves/claimed.dot Remote template reference
    • http://schemas.microsoft.com/office/word/2010/wordprocessingCanvasIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2014/chartexIn 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/2012/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2015/wordml/symexIn 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)
    • https://news.rbc.ua/rus/society/kabmin-uzhestochil-vezd-ukrainu-teper-nuzhen-1616485737.htmlDocument hyperlink

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