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

Static analysis result for SHA-256 78d9a3b832ade469…

MALICIOUS

Office (OOXML) / .DOC

21.7 KB Created: 2021-07-30 07:13:00 UTC Authoring application: Microsoft Office Word 16.0000
MD5: 5d020bad11ca69d8a2ea5eb522033926 SHA-1: c4b17907849d3448408234d2a94d69bd9ef8a447 SHA-256: 78d9a3b832ade4695f1647c64805dff7c43ac8cf4e206bc64c7ce13fa25971fc
122 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The file is a malicious Office document that uses remote template injection to download a secondary payload. The ClamAV heuristic specifically identifies it as Doc.Downloader.Gamaredon-9966166-1, indicating a downloader functionality. The primary IOC is the URL used for the remote template.

Heuristics 4

  • ClamAV: Doc.Downloader.Gamaredon-9966166-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Gamaredon-9966166-1
  • Remote template injection high OOXML_REMOTE_TEMPLATE
    Document references a remote template URL (http://semara.ru/ADMIN/necessarily/false/false.dot) — 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/settings.xml.rels: http://semara.ru/ADMIN/necessarily/false/false.dot
  • 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://semara.ru/ADMIN/necessarily/false/false.dot
    • http://schemas.microsoft.com/office/word/2010/wordprocessingCanvas
    • http://schemas.microsoft.com/office/drawing/2014/chartex
    • http://schemas.openxmlformats.org/markup-compatibility/2006
    • http://schemas.openxmlformats.org/officeDocument/2006/relationships
    • http://schemas.openxmlformats.org/officeDocument/2006/math
    • http://schemas.microsoft.com/office/word/2010/wordprocessingDrawing
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing
    • http://schemas.openxmlformats.org/wordprocessingml/2006/main
    • http://schemas.microsoft.com/office/word/2010/wordml
    • http://schemas.microsoft.com/office/word/2012/wordml
    • http://schemas.microsoft.com/office/word/2015/wordml/symex
    • http://schemas.microsoft.com/office/word/2010/wordprocessingGroup
    • http://schemas.microsoft.com/office/word/2010/wordprocessingInk
    • http://schemas.microsoft.com/office/word/2006/wordml
    • http://schemas.microsoft.com/office/word/2010/wordprocessingShape

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