Redline — Office (OOXML) / .DOC malware analysis

Static analysis result for SHA-256 42c490ed8706fab1…

MALICIOUS

Office (OOXML) / .DOC

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000
MD5: 6285bc745788949fee227d4c8d1277a3 SHA-1: b2f7c513215271eabebaeae129f7e1cf588c6d28 SHA-256: 42c490ed8706fab104c3ff1aca266cc891011aea474435b7d32287eda5ddfcc2
122 Risk Score

Malware Insights

Redline · confidence 90%

MITRE ATT&CK
T1218.003 System Binary Proxy Execution: Word Template Injection T1566.001 Phishing: Spearphishing Attachment

The sample is a malicious OOXML document that employs remote template injection via the URL https://itsssl.com/CsHD3 to bypass macro filters. A critical ClamAV detection specifically identifies the file as a Redline downloader, and the remote template injection technique is consistent with this family's delivery mechanism.

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://itsssl.com/CsHD3) — 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://itsssl.com/CsHD3
  • 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://itsssl.com/CsHD3
    • 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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