MALICIOUS
200
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Service Execution: Service Execution
T1059.001 PowerShell: PowerShell
T1204.002 Malicious File: Malicious File
The file is identified as malicious by ClamAV and exhibits critical heuristic firings for Excel 4.0 macros, specifically an Auto_Open macro utilizing dangerous functions like RUN. This indicates the sample is designed to automatically execute code upon opening, typical for malware downloaders. The ClamAV detection name 'Xls.Downloader.Emotet' strongly suggests the Emotet family and its downloader capabilities.
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.Emotet-ea81817e7f807ab1-9952142-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Xls.Downloader.Emotet-ea81817e7f807ab1-9952142-0
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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.txt85773188e79d904ef8ecf815a27f3a8200cc87e1822ab4901cc9bed29c53e636 |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 8156 bytes |
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