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

Static analysis result for SHA-256 7402820a9e624e3c…

MALICIOUS

Office (OOXML) / .DOC

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000
MD5: 667b669aa8550120f1e4281ec1d94b50 SHA-1: 4973d9e75316e3873d3b8203daf59e84e21cb4e0 SHA-256: 7402820a9e624e3c35ce2275dd9e6d73e906d976c8e4da6a140ca7cb7daab2cc
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, pointing to a malicious document. The ClamAV detection as 'Doc.Downloader.Redline-9972754-0' strongly suggests a downloader functionality. The embedded URLs are highly suspicious and likely serve as the source for a second-stage payload. The document body is minimal and does not provide further context.

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://198.12.91.187/..........-.-.-...................................-----------/...........................-.............................) — 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://198.12.91.187/..........-.-.-...................................-----------/...........................-.........
  • 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://198.12.91.187/..........-.-.-...................................-----------/...........................-
    • http://198.12.91.187/..........-.-.-...................................-----------/...........................-...................................w.wiz
    • 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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