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

Static analysis result for SHA-256 4f4f0c23efcb1919…

MALICIOUS

Office (OOXML) / .DOC

135.5 KB Created: 2022-07-26 10:53:00 UTC Authoring application: Microsoft Office Word 16.0000 First seen: 2022-07-28
MD5: 6f59905d5b1b2b17b464474c72e97b18 SHA-1: 49e9e6e5dcc361506ed8925b5d37c6a38649fc20 SHA-256: 4f4f0c23efcb19193d8f8c69ae205bd1d21161fc4d007ab69f7063f4f460f813
62 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The sample utilizes OOXML remote template injection, indicated by the high-severity heuristic firing. This technique involves fetching and loading an external template file from the URL http://aktualizieren-wolke.de/99.dotm, which is highly suspicious and likely serves as a mechanism to download and execute a secondary malicious payload. The presence of an external relationship further supports this attack vector.

Heuristics 3

  • Remote template injection high OOXML_REMOTE_TEMPLATE
    Document references a remote template URL (http://aktualizieren-wolke.de/99.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://aktualizieren-wolke.de/99.dotm
  • 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://aktualizieren-wolke.de/99.dotm
    • 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.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/2012/wordml
    • 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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