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

Static analysis result for SHA-256 04b08125f2348443…

MALICIOUS

Office (OOXML) / .DOC

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000
MD5: 7dc95d9fd436b32266c6921e7d7db51a SHA-1: b801856a3f3e6e831f3872cefd87add4d3f5698d SHA-256: 04b08125f2348443663ac6b44ed2388af399e5506b4a75dd4a0d02a40734848e
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file exhibits critical heuristic firings for remote template injection and external relationships, indicating it attempts to fetch resources from a remote server. The ClamAV detection as 'Doc.Downloader.Redline-9972754-0' strongly suggests a downloader functionality. The embedded URLs point to a suspicious IP address, likely serving as the distribution point for 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 (http://104.129.4.31/..........W-----W.....W-w---------------W...W...w-----wW-------.---/...-......-W......Ww.......-----wW...w----W.--------) — 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: http://104.129.4.31/..........W-----W.....W-w---------------W...W...w-----wW-------.---/...-......-W......Ww.......-----
  • 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://104.129.4.31/..........W-----W.....W-w---------------W...W...w-----wW-------.---/...-......-W......Ww.......-----wW...w----W.--------
    • http://104.129.4.31/..........W-----W.....W-w---------------W...W...w-----wW-------.---/...-......-W......Ww.......-----wW...w----W.-------------Ww-----.----.w-.wW..wbk
    • http://104.129.4.31/..........W-----W.....W-w---------------W...W...w-----wW-------.---/...-......-W......Ww.......-----
    • 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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