Redline — Office (OOXML) / .DOC malware analysis

Static analysis result for SHA-256 4fdab1bae9c4c1a4…

MALICIOUS

Office (OOXML) / .DOC

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000
MD5: 38106f6c10bbea4dd4713bc3c85a3277 SHA-1: 72585bf780b995e8c25e715704b1d470469c23e4 SHA-256: 4fdab1bae9c4c1a40197d9328862fa3a5e938c26464954367358caaaab0d21de
122 Risk Score

Malware Insights

Redline · confidence 95%

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

The file is detected as Doc.Downloader.Redline-9972754-0 by ClamAV, indicating it is a downloader for the Redline family. The presence of OOXML_REMOTE_TEMPLATE and OOXML_EXTERNAL_REL heuristics, along with an embedded URL pointing to 'https://longurl.in/htYUl', suggests the document is designed to fetch and execute a secondary payload. This aligns with the typical behavior of a downloader malware.

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://longurl.in/htYUl) — 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://longurl.in/htYUl
  • 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://longurl.in/htYUl Remote template reference
    • http://schemas.openxmlformats.org/markup-compatibility/2006In document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/officeDocument/2006/relationshipsIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/officeDocument/2006/mathIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawingIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/wordprocessingml/2006/mainIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2006/wordmlIn document text (OOXML body / shared strings)

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