MALICIOUS
200
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1203 Exploitation for Client Execution
The file contains Excel 4.0 macros, specifically an Auto_Open macro that utilizes dangerous functions like RUN. This indicates an attempt to execute arbitrary code upon opening the document. ClamAV also identified the file as a downloader, suggesting it is designed to fetch and run additional malicious content. The specific macro logic appears to be obfuscated by concatenating characters to form strings, but the presence of Auto_Open and the ClamAV signature strongly suggest a downloader functionality.
Heuristics 4
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Excel 4.0 Auto_Open defined name critical OLE_XLM_AUTOOPEN_DEFINEDNAMEoletools recovered an Auto_Open / Auto_Close entry from an Excel 4.0 macro sheet. The raw BIFF name can be tokenized or partially opaque to byte-string checks, but the recovered macro listing confirms the workbook has an XLM auto-execution entry.
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XLM Auto_Open with dangerous formula APIs critical OLE_XLM_DANGEROUS_FNExcel 4.0 macro sheet contains an Auto_Open / Auto_Close entry and dangerous XLM formula APIs that can invoke programs, write files, or transfer control without VBA.
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ClamAV: Xls.Downloader.Abracadabra-f87353785a988c8e-9950319-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Xls.Downloader.Abracadabra-f87353785a988c8e-9950319-0
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Excel 4.0 (XLM) macro sheet present medium OLE_XLM_AUTOOPENWorkbook contains an Excel 4.0 macro sheet sub-stream — XLM is rarely seen in modern legitimate workbooks and was a major Office malware vector during 2020-2022.
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
xlm_macros.txt08f17b02fa28faebba7c3871d11b99a54e8fb868102bad7fbcb977c34b76e35c |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 20262 bytes |
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