Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 52965a2b4b12cb62…

MALICIOUS

Office (OOXML)

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000
MD5: 3ba4b6c7c0333386240a84d1b84f913c SHA-1: 4d51e21d10d815dde69384bff636b1981b510092 SHA-256: 52965a2b4b12cb6202a53d535d3663f7988a95e4a1f77d8acd3f4ef6691fa497
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file exhibits characteristics of a downloader, indicated by the 'OOXML_REMOTE_TEMPLATE' and 'OOXML_EXTERNAL_REL' heuristics, both pointing to the URL 'https://hiokurl.com/YEz3B'. ClamAV also identified it as 'Doc.Downloader.Redline-9972754-0'. This suggests the document is designed to fetch and execute a secondary malicious payload from the specified URL.

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://hiokurl.com/YEz3B) — 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://hiokurl.com/YEz3B
  • 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://hiokurl.com/YEz3B
    • 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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