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

Static analysis result for SHA-256 2674971623004706…

MALICIOUS

Office (OOXML) / .DOC

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000
MD5: e503ae624024e1b617d5b35cee5e8349 SHA-1: 22590a89074f4807baff071512e876910d2c4ebc SHA-256: 2674971623004706ff145d3fc9449ec668bcf6513f2ee0bea743f27fff389ff9
122 Risk Score

Malware Insights

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

The file exhibits characteristics of a downloader, as indicated by the 'OOXML_REMOTE_TEMPLATE' and 'OOXML_EXTERNAL_REL' heuristics. The embedded URL 'http://103.171.0.220/receipt/invoice_008789000.wbk' is likely used to fetch a secondary payload. ClamAV detection as 'Doc.Downloader.Redline-9972754-0' further supports this assessment.

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 (http://103.171.0.220/receipt/invoice_008789000.wbk) — 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: http://103.171.0.220/receipt/invoice_008789000.wbk
  • 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://103.171.0.220/receipt/invoice_008789000.wbk
    • 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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