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

Static analysis result for SHA-256 4835f6d3b8e1414e…

MALICIOUS

Office (OOXML) / .DOC

19.9 KB Created: 2021-06-01 07:28:00 UTC Authoring application: Microsoft Office Word 16.0000
MD5: 677e96c969263b6ab69587e55731cffa SHA-1: 21c535c0bbb4671dd6b07d20c7187438e2d09cbb SHA-256: 4835f6d3b8e1414e0176a9142c154d8b67f3cf0183ce9b230cb240ba110d8140
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The file is identified as malicious by ClamAV and exhibits characteristics of a macro-based malware dropper. It uses a remote template injection and external relationship, and the document body likely contains a lure to enable macros. The primary IOC is the URL associated with the remote template, which is likely used to download a secondary payload.

Heuristics 5

  • ClamAV: Win.Malware.Agent-9868335-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Malware.Agent-9868335-0
  • Remote template injection high OOXML_REMOTE_TEMPLATE
    Document references a remote template URL (https://micrsoft365.live/extension/api-FKdq8720/template-jn02b3.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.
    URL https://micrsoft365.live/extension/api-FKdq8720/template-jn02b3.dot
  • External relationship medium OOXML_EXTERNAL_REL
    External target in word/_rels/settings.xml.rels: https://micrsoft365.live/extension/api-FKdq8720/template-jn02b3.dot
    URL https://micrsoft365.live/extension/api-FKdq8720/template-jn02b3.dot
  • 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 — context-specific rules above attribute URLs they actually evaluated; this rule lists URLs that were present in the bytes but were not otherwise tied to a specific finding.
    URL http://schemas.microsoft.com/office/word/2010/wordprocessingCanvas
    • http://schemas.microsoft.com/office/drawing/2014/chartex
    • http://schemas.microsoft.com/office/drawing/2015/9/8/chartex
    • http://schemas.microsoft.com/office/drawing/2015/10/21/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/9/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/10/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/11/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/12/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/13/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/14/chartex
    • http://schemas.openxmlformats.org/markup-compatibility/2006
    • http://schemas.microsoft.com/office/drawing/2016/ink
    • http://schemas.microsoft.com/office/drawing/2017/model3d
    • 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/2012/wordml
    • http://schemas.microsoft.com/office/word/2016/wordml/cid
    • http://schemas.microsoft.com/office/word/2015/wordml/symex
    • 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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