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

Static analysis result for SHA-256 223308d8e5f191b8…

MALICIOUS

Office (OOXML) / .DOC

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000
MD5: 841e10a6dd65d64b1b3a62fda9a6c784 SHA-1: ea3a32b1aea3a2d8a0448d1c3f341b0c9bf3d0b9 SHA-256: 223308d8e5f191b8a4e4bae3970cc6d0b94fc8d967a944625018f1cd9986f7a9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1059 Command and Scripting Interpreter

The file exhibits characteristics of a downloader, specifically triggering heuristics for remote template injection and external relationships pointing to a suspicious URL. The ClamAV detection as 'Doc.Downloader.Redline-9972754-0' further supports this. The primary attack vector appears to be tricking the user into accessing the external URL, which is likely to serve a malicious 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://rzd.ac/1vV3BD7) — 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://rzd.ac/1vV3BD7
  • 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.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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