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

Static analysis result for SHA-256 ff4935f904a0c767…

MALICIOUS

Office (OOXML) / .DOC

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000 First seen: 2022-09-12
MD5: 429b2307c47f8f23fc986c7f48afd03b SHA-1: bbefb4c3ce3265ec3096a0e08b7d3d654cda5b99 SHA-256: ff4935f904a0c7670835cf1ebdda3512b4a86290f35b23be019fdf86bdc4dabe
142 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The sample exhibits critical heuristic firings for remote template injection and external relationships, pointing to a malicious OOXML document. The primary IOC is a suspicious URL embedded within the document's structure, which is likely used to download a secondary payload. The ClamAV detection as 'Doc.Downloader.Redline-9972754-0' further supports its role as a downloader.

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 (http://users@1806450061/..---------..--------------_----_______---_---______------------/.........................87.doc) — 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 high OOXML_EXTERNAL_REL
    External target in word/_rels/webSettings.xml.rels: http://users@1806450061/..---------..--------------_----_______---_---______------------/.........................87.doc
  • 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://users@1806450061/..---------..--------------_----_______---_---______------------/.........................87.doc
    • http://schemas.openxmlformats.org/markup-compatibility/2006
    • http://schemas.openxmlformats.org/officeDocument/2006/relationships
    • http://schemas.openxmlformats.org/officeDocument/2006/math
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing
    • http://schemas.openxmlformats.org/wordprocessingml/2006/main
    • http://schemas.microsoft.com/office/word/2006/wordml

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