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

Static analysis result for SHA-256 d8567051c5186647…

MALICIOUS

Office (OOXML) / .DOC

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000
MD5: 17c5cdb8126b9a2b3251da51c338ccd0 SHA-1: 2d2769e5c138441d77682eb98ca95084d33b6588 SHA-256: d8567051c5186647aa813d624b1b74be5f45d1047babfb99f3986233d9f6018b
122 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment

The OOXML_REMOTE_TEMPLATE and OOXML_EXTERNAL_REL heuristics indicate that this document is configured to load external content from a URL. The ClamAV detection of 'Doc.Downloader.Redline-9972754-0' strongly suggests a downloader functionality. The primary IOC is the external URL https://linkr.uk/dj1Ar, which is likely used to fetch and execute a secondary payload.

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 (https://linkr.uk/dj1Ar) — 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/webSettings.xml.rels: https://linkr.uk/dj1Ar
  • 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://linkr.uk/dj1Ar
    • http://schemas.openxmlformats.org/markup-compatibility/2006
    • http://schemas.openxmlformats.org/officeDocument/2006/relationships
    • http://schemas.openxmlformats.org/officeDocument/2006/math
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing
    • http://schemas.openxmlformats.org/wordprocessingml/2006/main
    • http://schemas.microsoft.com/office/word/2006/wordml

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