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

Static analysis result for SHA-256 24a60e50ed8469fc…

MALICIOUS

Office (OOXML) / .XLSX

594.3 KB Created: 2025-03-18 21:47:22 UTC Authoring application: Microsoft Excel 16.0300
MD5: daffbfd71f8595ab6d6b8c94cc81a778 SHA-1: 74d8e346237999f9ecb92bd88d868f6da4fd85fd SHA-256: 24a60e50ed8469fc31afa9abfc361291f72922430cf062bf9c4ac7e6d84b5fad
208 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The XLSX file contains VBA macros, specifically a Workbook_Open macro that utilizes Shell() and CreateObject() calls. This suggests the macro is designed to execute arbitrary commands or download additional payloads. The document body contains text in Ukrainian, referencing a report of criminal offenses and instructing the user to enable macros for proper display, indicating a social engineering lure. The presence of a Workbook_Open macro and Shell() call strongly implies the execution of a second-stage payload.

Heuristics 7

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • VBA project inside OOXML medium OOXML_VBA
    Document contains vbaProject.bin — VBA macros present
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
  • 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.openxmlformats.org/spreadsheetml/2006/main
    • http://schemas.openxmlformats.org/officeDocument/2006/relationships
    • http://schemas.openxmlformats.org/markup-compatibility/2006
    • http://schemas.microsoft.com/office/spreadsheetml/2009/9/ac
    • http://schemas.microsoft.com/office/spreadsheetml/2014/revision
    • http://schemas.microsoft.com/office/spreadsheetml/2015/revision2
    • http://schemas.microsoft.com/office/spreadsheetml/2016/revision3

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
4e16b39ec1a229cd53d7979d123f9f1d234028e3c55b5a25d998b85fff21923b		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 2062 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.
vbaProject_00.bin
d75209d8f7ea8ff99b2f655be4598205ef5b48161f3fd5f465e7c9c81fa7b9c7		 vba-project OOXML VBA project: xl/vbaProject.bin 15360 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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