Malicious Office (OOXML) — malware analysis report

Heuristics 5

• ClamAV: Doc.Downloader.Redline-9972754-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Doc.Downloader.Redline-9972754-0
• OOXML external relationship targets a free/throwaway TLD high OOXML_EXTERNAL_REL_FREE_TLD
  Document has an external relationship whose target host is on a free, no-registration TLD (Freenom .ml/.ga/.cf/.gq/.tk). Legitimate business documents do not link out to a Freenom throwaway domain; these are a near-zero-FP phishing / BEC delivery tell (e.g. an RFQ/invoice lure pointing at 'shareddocuments.ml/RFQ'). The relationship may be a hyperlink, a remote template, or an external OLE object.
• Remote template injection high OOXML_REMOTE_TEMPLATE
  Document references a remote template URL (http://mofsetbay.ga/main/ex/ap390/document.doc) — 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 high OOXML_EXTERNAL_REL
  External target in word/_rels/webSettings.xml.rels: http://mofsetbay.ga/main/ex/ap390/document.doc
• 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://mofsetbay.ga/main/ex/ap390/document.doc OOXML external relationship

  • 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/2012/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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