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

Static analysis result for SHA-256 1bb021628035fd6a…

MALICIOUS

Office (OOXML) / .DOC

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000
MD5: 8e631b91da5fcc4cb333f2186ff95dac SHA-1: 8f5566d5d74827636f1d354bf69cbf268d4a3c3b SHA-256: 1bb021628035fd6aaad50cea15e7a96c3056b40de036be8083a90480a5efe730
122 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment

The file exhibits characteristics of a malicious downloader, as indicated by the 'OOXML_REMOTE_TEMPLATE' and 'OOXML_EXTERNAL_REL' heuristics. The embedded URL 'https://bitestan.com/c4fxhENO' is likely used to fetch and execute a secondary payload. The ClamAV detection 'Doc.Downloader.Redline-9972754-0' further supports this assessment, suggesting a downloader family. The document's structure points towards an attempt to exploit external relationships to achieve its malicious objective.

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://bitestan.com/c4fxhENO) — 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://bitestan.com/c4fxhENO
  • 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://bitestan.com/c4fxhENO
    • 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