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

Static analysis result for SHA-256 8056c874a9bc6c22…

MALICIOUS

Office (OOXML) / .DOC

290.8 KB Created: 2022-04-04 10:43:00 UTC Authoring application: Microsoft Office Word 16.0000 First seen: 2022-04-06
MD5: e7bc410788af86fe5e41695dd0ae308b SHA-1: 8d9f55c90db961ea66993fd03e148b0dc9bcec5b SHA-256: 8056c874a9bc6c2204ab4ea45a6f0ef4f2de0302e367695fdfd3599e4509df55
82 Risk Score

Malware Insights

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

The file is a malicious OOXML document containing an embedded OLE object. This object, identified by the 'OFFICE_EMBEDDED_MACRO_OBJECT' heuristic, carries a VBA macro project. The macro project is associated with the URL https://taxfile.mediafire.com/file/p3ay4it08j1s7hp/0main.htm/file, indicating it is likely used to download and execute a second-stage payload. The embedded nature of the macro and the external URL strongly suggest a spearphishing attachment attack vector.

Heuristics 3

  • 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.
  • 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 https://taxfile.mediafire.com/file/p3ay4it08j1s7hp/0main.htm/file
    • 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/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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin
85899c7e7dc132781a2f91a76eea840dd402a1c4695a92cf09d8bf5a019fd290		 ooxml-ole-object OOXML embedded OLE part: word/embeddings/Microsoft_Excel_Macro-Enabled_Worksheet2.aksodakosd~jaoskdoa~aksodk~aksod 15045 bytes
ooxml_oleobject_02.bin
e031bcfb5c0522d8e0f855f93b390dcb67052325342ca015e062f8ef66584e1a		 ooxml-ole-object OOXML embedded OLE part: word/embeddings/Microsoft_Excel_Macro-Enabled_Worksheet.aksodakosd~jaoskdoa~aksodk~aksod 15040 bytes
emf_00.emf
ec74c1ac1cdf6264c476a64da7a349acdaadbdea7d19cb054ce3684213b97dc7		 ooxml-emf OOXML EMF part: word/media/image2.emf 4156 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.