Redline — Office (OOXML) / .DOC malware analysis

Static analysis result for SHA-256 2bb1e6d0bcc6af94…

MALICIOUS

Office (OOXML) / .DOC

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000
MD5: 8312b5bab2f19b01e2a1a12744a7464e SHA-1: 076df8e460f965cd7b30fb07cdd06e90654417ec SHA-256: 2bb1e6d0bcc6af940f0835a269b1ad99f8420207ba2f87c6f789219f8186559f
122 Risk Score

Malware Insights

Redline · confidence 90%

MITRE ATT&CK
T1218.003 System Binary Proxy Execution: Office Application T1027 Obfuscated Files or Information T1105 Ingress Tool Transfer T1204.002 User Execution: Malicious File T1566.001 Phishing: Spearphishing Attachment

The sample is a malicious OOXML document that employs remote template injection via a suspicious URL (198.12.91.160) to bypass macro filters. The ClamAV detection specifically identifies the file as a Redline downloader, and the remote template technique is a common delivery mechanism for this family. No scripts were extracted from this sample, but the remote template injection is the primary execution vector.

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://198.12.91.160/--...........................................------..................--------/......................wiz) — 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://198.12.91.160/--...........................................------..................--------/.....................
  • 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://198.12.91.160/--...........................................------..................--------/......................wiz
    • http://198.12.91.160/--...........................................------..................--------/
    • 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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