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

Static analysis result for SHA-256 f5f65c8bafcd6640…

MALICIOUS

Office (OOXML) / .DOC

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000 First seen: 2022-07-11
MD5: d7b7d8f7c748b1161d81d41457ebe5e5 SHA-1: 214aa61936ad9e94e488df5c3d4fb46587738754 SHA-256: f5f65c8bafcd66409d149259075d76f2967346614365bee6fd4b0691a7084ce4
122 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File

The file exhibits critical heuristic firings for remote template injection and external relationships, indicating an attempt to load external content. The ClamAV detection as 'Doc.Downloader.Redline-9972754-0' strongly suggests a downloader functionality. The presence of the unknown URL https://www.uirk.org/b7 is the likely source for the 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://www.uirk.org/b7) — 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://www.uirk.org/b7
  • 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://www.uirk.org/b7
    • 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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