Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 41e70180545deddc…

MALICIOUS

Office (OOXML)

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000 First seen: 2021-05-23
MD5: 87a64a2a7029350056b80d5d735d4513 SHA-1: c0d6182d1994186aefb2a7fe48f6fa68cc47417e SHA-256: 41e70180545deddc268f04de90380c19358c6f3e097f251fefbbfb1f7a643041
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a malicious OOXML document detected by ClamAV as Doc.Downloader.Redline. It utilizes remote template injection and an external relationship pointing to 'https://is.gd/wkV5Rn', indicating an attempt to download a secondary payload. The document body is minimal and does not provide further context on the lure.

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://is.gd/wkV5Rn) — 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://is.gd/wkV5Rn
  • 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://is.gd/wkV5Rn Remote template reference
    • http://schemas.openxmlformats.org/markup-compatibility/2006In document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/officeDocument/2006/relationshipsIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/officeDocument/2006/mathIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawingIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/wordprocessingml/2006/mainIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2006/wordmlIn document text (OOXML body / shared strings)

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