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

Static analysis result for SHA-256 ab80b9b17c044eee…

MALICIOUS

Office (OOXML) / .DOC

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000
MD5: 78e85cb8cd9169dfe6fe6ddcf4090a97 SHA-1: 6ca04ffc772794b12f4b6c724387823c185cce6e SHA-256: ab80b9b17c044eeed0605980caeaf6617c48f04d4f11a5f19d9a65256a940e95
120 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The sample is a malicious OOXML document that uses remote template injection to load an external template from http://107.173.219.80/prf/regasm.dot. This technique is commonly used to download and execute a second-stage payload. ClamAV detection further confirms its malicious nature as Doc.Downloader.Redline.

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://107.173.219.80/prf/regasm.dot) — 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://107.173.219.80/prf/regasm.dot
  • 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://107.173.219.80/prf/regasm.dot
    • 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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