Doc.Downloader.Redline — Office (OOXML) malware analysis

Static analysis result for SHA-256 4a1f043432e98102…

MALICIOUS

Office (OOXML)

11.5 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 15.0000 First seen: 2020-05-25
MD5: 6fc9732f98262f60ba822ad7bc2ed3ed SHA-1: 82c0646135803b41fc7b7962603077396a7c0e1d SHA-256: 4a1f043432e9810242ba29a67b5b2e7e501754a06f3cadaffbbbf766a9116f8e
142 Risk Score

Malware Insights

Doc.Downloader.Redline · confidence 95%

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as a malicious downloader by ClamAV. Heuristics indicate the use of remote templates and external relationships pointing to a suspicious URL, likely to fetch a secondary payload. The embedded URL is the primary indicator of the attack pattern, suggesting a phishing lure for a malicious document.

Heuristics 4

  • ClamAV: Doc.Downloader.Redline-9972754-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Redline-9972754-0
  • Remote template injection high OOXML_REMOTE_TEMPLATE
    Document references a remote template URL (http://kungeducationalinvestment8tusdyagender.duckdns.org/office/invoice_11155.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://kungeducationalinvestment8tusdyagender.duckdns.org/office/invoice_11155.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://schemas.microsoft.com/office/word/2010/wordprocessingCanvas In 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)
    • http://kungeducationalinvestment8tusdyagender.duckdns.org/office/invoice_11155.docRemote template reference

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