Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 4db59d3e610a4c80…

MALICIOUS

Office (OOXML)

102.2 KB Created: 2021-07-29 05:35:00 UTC Authoring application: Microsoft Office Word 14.0000
MD5: cfa9f9b45ef62181d6cce2d373115df0 SHA-1: 7215ec8ee845d707b4ff31ff2ecce786b0f1b511 SHA-256: 4db59d3e610a4c80db60741e8d27fc983d4febbda9df507b47594ae1d84dbff1
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File T1059.005 Visual Basic

The file is identified as malicious by ClamAV and exhibits characteristics of a macro-enabled lure. It uses a remote template injection technique, pointing to 'http://140.82.33.69/GOP.dotm', which is likely the malicious payload. The document body explicitly instructs the user to 'Enable Content', a common tactic to bypass security measures and execute embedded macros.

Heuristics 5

  • ClamAV: Win.Malware.Agent-9882679-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Malware.Agent-9882679-0
  • Remote template injection high OOXML_REMOTE_TEMPLATE
    Document references a remote template URL (http://140.82.33.69/GOP.dotm) — 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/settings.xml.rels: http://140.82.33.69/GOP.dotm
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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://140.82.33.69/GOP.dotm
    • http://schemas.microsoft.com/office/word/2010/wordprocessingCanvas
    • http://schemas.openxmlformats.org/markup-compatibility/2006
    • http://schemas.openxmlformats.org/officeDocument/2006/relationships
    • http://schemas.openxmlformats.org/officeDocument/2006/math
    • http://schemas.microsoft.com/office/word/2010/wordprocessingDrawing
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing
    • http://schemas.openxmlformats.org/wordprocessingml/2006/main
    • http://schemas.microsoft.com/office/word/2010/wordml
    • http://schemas.microsoft.com/office/word/2010/wordprocessingGroup
    • http://schemas.microsoft.com/office/word/2010/wordprocessingInk
    • http://schemas.microsoft.com/office/word/2006/wordml
    • http://schemas.microsoft.com/office/word/2010/wordprocessingShape

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