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

Static analysis result for SHA-256 314fe41c4de11eb7…

MALICIOUS

Office (OOXML) / .DOC

171.7 KB Created: 2022-06-08 06:48:00 UTC Authoring application: Microsoft Office Word 16.0000 First seen: 2022-06-22
MD5: 3290c3c5ec33256c5bd6b89f51d7b1f5 SHA-1: bab4c3907f1a86135b4cfbe456dc3dba630d7d63 SHA-256: 314fe41c4de11eb7270e04a04b40a267109da6b1ba469e4604a0e883b0d87fb3
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The file is an OOXML document identified as malicious. It contains an embedded OLE object which, in turn, contains a VBA macro project. This suggests the document is designed to leverage the embedded macro to execute malicious actions. The external relationship heuristic points to a potential path for the macro's origin or target.

Heuristics 4

  • Embedded Office object carries macros critical OFFICE_EMBEDDED_MACRO_OBJECT
    This document embeds a second Office file that itself contains a VBA macro project or an Excel 4.0 (XLM) macro sheet. Hiding a macro-bearing workbook or document inside another document — frequently under an obfuscated, non-standard part name — is a macro-smuggling technique that defeats scanners which only inspect the outer document's macro storage. No benign authoring workflow stages a hidden macro project this way.
  • External relationship high OOXML_EXTERNAL_REL
    External target in word/_rels/settings.xml.rels: file:///C:\Users\Profex\AppData\Local\Microsoft\Office\16.0\DTS\en-US{C4A2B132-8482-49BE-ABF6-61BF4311DF3C}\{00F06CAE-26
  • Embedded OLE object medium OOXML_OLE_OBJECT
    Document contains an embedded OLE object
  • 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://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.microsoft.com/office/2019/extlst
    • 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/2018/wordml/cex
    • http://schemas.microsoft.com/office/word/2016/wordml/cid
    • http://schemas.microsoft.com/office/word/2018/wordml
    • http://schemas.microsoft.com/office/word/2020/wordml/sdtdatahash
    • 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin
8354c750dbe832e9e1f389d9ee36b0b8136c397d293d4972cba70f1218ae8eba		 ooxml-ole-object OOXML embedded OLE part: word/embeddings/Microsoft_Excel_97-2003_Worksheet1.xls 33280 bytes
emf_00.emf
ec74c1ac1cdf6264c476a64da7a349acdaadbdea7d19cb054ce3684213b97dc7		 ooxml-emf OOXML EMF part: word/media/image2.emf 4156 bytes

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