Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 f7a5a53442538c5b…

MALICIOUS

Office (OOXML)

113.2 KB Created: 2021-07-07 11:44:00 UTC Authoring application: Microsoft Office Word 16.0000
MD5: 855b11a85c578425c686569c62fcc532 SHA-1: b9afcc134829846e97091eff81ecf40637a3f06c SHA-256: f7a5a53442538c5b7820da7c196e8c8f1ab6fa49bb978ba4ec19db15fd7570f0
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and exhibits heuristics for remote template injection and external relationships. These point to the URL 'https://fusuri-solt-down.com/ecm/ibm/3233457983/converter.dot' as a likely source for a secondary payload. The document body is truncated and does not provide further context on the lure.

Heuristics 4

  • ClamAV: Doc.Downloader.Office3steps12210-9915225-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Office3steps12210-9915225-0
  • Remote template injection high OOXML_REMOTE_TEMPLATE
    Document references a remote template URL (https://fusuri-solt-down.com/ecm/ibm/3233457983/converter.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: https://fusuri-solt-down.com/ecm/ibm/3233457983/converter.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 https://fusuri-solt-down.com/ecm/ibm/3233457983/converter.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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