Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 e70ec8938653dc25…

MALICIOUS

Office (OOXML)

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000
MD5: 78edcda13b794466288968d3c00da44c SHA-1: 48e8af94a95fcc491c719d150b7cb7e10da690ef SHA-256: e70ec8938653dc2545eca02ea5c68d2491c10b468ce42f8234591b0d74af2014
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is an OOXML document flagged as malicious by ClamAV with the signature Doc.Downloader.Redline-9972754-0. Heuristics indicate remote template injection and external relationships pointing to the URL https://longurl.in/JcAX. This suggests the document is designed to download and execute a second-stage payload, characteristic of a downloader malware.

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://longurl.in/JcAX) — 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://longurl.in/JcAX
  • 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://longurl.in/JcAX
    • 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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