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

Static analysis result for SHA-256 bf4a7c58551436b7…

MALICIOUS

Office (OOXML) / .DOC

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000
MD5: 5b9633731a839cc515e92c7c1628aa52 SHA-1: 1b5d9f4bd24baf688c583e79bceea725f0aab323 SHA-256: bf4a7c58551436b7798f9f307d70c72ac53d5722dc277211c38c5f61a95fdc5a
122 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 Command and Scripting Interpreter T1566.001 Privilege Escalation T1071.001 Application Layer Takeover

The heuristic detections, specifically OOXML_REMOTE_TEMPLATE and CLAMAV_DETECTION, strongly indicate a remote template injection attack. The document leverages a URL (https://bit.ly/2TbLATi) to load a macro-enabled template, a common tactic used by malware families like Hancitor and Emotet. The document body confirms this, detailing the use of external relationships to achieve remote template injection. The intent is to download and execute a secondary payload from the embedded URL, likely a dropper or a command-and-control component.

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://bit.ly/2TbLATi) — 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://bit.ly/2TbLATi
  • 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://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
    • https://bit.ly/2TbLATi

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