Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 e003fb7de75319cb…

MALICIOUS

Office (OOXML)

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000 First seen: 2021-07-02
MD5: 9e7b6d8be08b8b2557cb87a90cd931b9 SHA-1: 83caf8c3bb6dad10656c6452d070a17e71a030cb SHA-256: e003fb7de75319cb0d30397adbf89bef53d8ccd44af2e9813c219b2571bad2d2
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample exhibits critical heuristics for remote template injection and external relationships, both pointing to the URL https://itsssl.com/rzuDW. ClamAV identifies the file as Doc.Downloader.Redline-9972754-0, indicating a downloader. The document body is minimal, but the presence of these indicators strongly suggests the file's purpose is to download and execute a secondary malicious payload from the identified URL.

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://itsssl.com/rzuDW) — 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://itsssl.com/rzuDW
  • 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://itsssl.com/rzuDW 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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