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

Static analysis result for SHA-256 a5506822025cdb6a…

MALICIOUS

Office (OOXML) / .DOC

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000
MD5: 024ddbd6cf82a9125dba9aa28cc1f2ce SHA-1: f09dbef05de1b9ef5b1dcce203b8e140502ddede SHA-256: a5506822025cdb6ad9c70ad8966804c8ca39d3d9c8f4a260492c65b9b4f82290
120 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The file exhibits characteristics of a downloader, specifically OOXML_REMOTE_TEMPLATE and OOXML_EXTERNAL_REL heuristics, indicating an attempt to fetch content from an external URL. The ClamAV detection as 'Doc.Downloader.Redline' further supports this, suggesting the file's primary purpose is to download and execute a second-stage payload from the identified malicious URL. No VBA scripts were extracted, but the heuristics strongly suggest a downloader attack pattern.

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://linkzip.me/TBwQm) — 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://linkzip.me/TBwQm
  • 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://linkzip.me/TBwQm
    • 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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