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

Static analysis result for SHA-256 cf3794e895bbea5d…

MALICIOUS

Office (OOXML) / .DOC

185.4 KB Created: 2022-05-23 14:50:00 UTC Authoring application: Microsoft Office Word 15.0000 First seen: 2022-05-24
MD5: 92686a701b7a5746dd753cd44d45bb2f SHA-1: 213fe19d9db68aa0a8227bf139bde63c4cdad675 SHA-256: cf3794e895bbea5d3f44c2f943526ee8feff80ffbcc8aca0625c7c4877741370
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.005 Visual Basic

The sample is a malicious OOXML document containing an embedded OLE object. This object is flagged as carrying a VBA macro project, which in turn contains a payload URL. The macro likely downloads and executes a second-stage payload from the embedded URL, indicating a typical downloader or droppper attack pattern.

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/3tw0gez61euft9m/main.htm/file
    • http://schemas.microsoft.com/office/word/2010/wordprocessingCanvas
    • 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/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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin
264e304c12694645b082e0c5d97a5d93b230f3ec40f441e9f5bf6d817eb78170		 ooxml-ole-object OOXML embedded OLE part: word/embeddings/!!!~!~!!~!!!!~!~!!~!3.!!!~!~!!~! 15011 bytes

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