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

Static analysis result for SHA-256 9a31d2ee1eacc5ce…

MALICIOUS

Office (OOXML) / .DOC

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000
MD5: 9d99f0ec29e2c29e08cf16d68e47d35e SHA-1: fb81d9612c2b77d1f0d55e00ebf41e89b09afff8 SHA-256: 9a31d2ee1eacc5cec9a03080380a46a1fa22c663e828bc1726c2022f4fa62ce3
122 Risk Score

Malware Insights

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

The file exhibits critical heuristic firings for ClamAV detection as 'Doc.Downloader.Redline-9972754-0', indicating it functions as a downloader. High severity firings for 'OOXML_REMOTE_TEMPLATE' and 'OOXML_EXTERNAL_REL' point to the exploitation of OOXML external relationships to inject a remote template from 'https://roslet.com/y8'. This suggests the document's primary purpose is to redirect the user to this malicious URL, likely to download and execute a second-stage 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://roslet.com/y8) — 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://roslet.com/y8
  • 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://roslet.com/y8
    • 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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