Redline — Office (OOXML) / .DOC malware analysis

Static analysis result for SHA-256 843418ac3a15e1df…

MALICIOUS

Office (OOXML) / .DOC

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000
MD5: 906b4225acf50228bfc6325b311a66e7 SHA-1: 92879b2917deebb63ba95c15a4792634bf2238f9 SHA-256: 843418ac3a15e1df9e5520d60faf491aaa42b3096e08ea44c47aae915d58d9d0
122 Risk Score

Malware Insights

Redline · confidence 90%

MITRE ATT&CK
T1218.010 System Binary Proxy Execution: Remote Template Injection T1566.001 Phishing: Spearphishing Attachment T1204.002 User Execution: Malicious File

The sample is a malicious Word document that utilizes remote template injection to fetch a remote resource from http://104.129.4.31/..........W-----W.....W-w---------------W...W...W...w-----wW-------.---/...-......-W......Ww.......-----wW......------W.-------------Ww-----.----.w-.wW..wbk. ClamAV has explicitly identified this file as Doc.Downloader.Redline, which provides high confidence in the family attribution.

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.----) — 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.----
    • http://104.129.4.31/..........W-----W.....W-w---------------W...W...w-----wW-------.---/...-......-W......Ww.......-----wW......------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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