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

Static analysis result for SHA-256 545254fc84c05359…

MALICIOUS

Office (OOXML) / .DOC

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000
MD5: 46a2e9e0aeca4a42e17b2bb35b39a094 SHA-1: add60dbbb36d54305ec27c04c974fca23be02227 SHA-256: 545254fc84c053594e761482495443f78c780a6906eb8acb927a3b78b7324dcf
122 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The file exhibits characteristics of a malicious document downloader. The presence of OOXML_REMOTE_TEMPLATE and OOXML_EXTERNAL_REL heuristics indicates an attempt to load external content. The ClamAV detection as 'Doc.Downloader.Redline-9972754-0' further supports this. The unknown reputation URL https://s3r.io/wLndiaw is highly suspicious and likely serves as the source for a secondary payload.

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://s3r.io/wLndiaw) — 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://s3r.io/wLndiaw
  • 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://s3r.io/wLndiaw
    • 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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