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

Static analysis result for SHA-256 f06415d3df49d9c8…

MALICIOUS

Office (OOXML) / .DOC

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000
MD5: b74015b61e37188b6ace484b1ed23559 SHA-1: 732aaa46678a6cace74d5023453e78b0444908dd SHA-256: f06415d3df49d9c8f5ac780aaaed14d0cb28d7b24ad6fdac3d043485fd98159e
122 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 Command and Scripting Interpreter T1566.001 Privilege Escalation T1078.001 Valid Accounts T1071.001 Application Layer Protocol - Web Protocols

The heuristic detections, specifically `OOXML_REMOTE_TEMPLATE` and `OOXML_EXTERNAL_REL`, combined with the extracted URL and document excerpt, strongly indicate a remote template injection attack. The document leverages the Word application's ability to fetch and apply remote templates, bypassing typical security measures. The URL points to a template, and the document body describes the process. This is a common delivery mechanism used by malware families like Hancitor and Emotet. The ClamAV detection further confirms the malicious nature of the document.

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/2UTaZBr) — 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/2UTaZBr
  • 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/2UTaZBr

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