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

Static analysis result for SHA-256 479fde41f72ef3b7…

MALICIOUS

Office (OOXML) / .DOC

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000 First seen: 2022-07-29
MD5: 48511cb772aa1c0b92449613171735ac SHA-1: e0279a8b03f4fee892c67629347f8344efc987ba SHA-256: 479fde41f72ef3b7bcd2392afc915861bf68cac33c7ef76e24cdcb085a7a1124
122 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The sample exhibits critical heuristic firings for ClamAV detection as Doc.Downloader.Redline, indicating it is a downloader. High severity heuristics for OOXML Remote Template and External Relationship point to the use of the URL https://myown.bio/vvG to fetch a secondary payload. The document body contains minimal content, suggesting the primary malicious functionality resides in the OOXML structure and its external references.

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://myown.bio/vvG) — 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://myown.bio/vvG
  • 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://myown.bio/vvG
    • 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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