MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1566.001 Spearphishing Attachment
The file contains Excel 4.0 macros, specifically an Auto_Open defined name, which is a strong indicator of malicious intent. The ClamAV detection name 'Doc.Downloader.EmotetExcel01220-9936774-0' further suggests its role as a downloader and points towards the Emotet family. The macro sheet itself is truncated, but the presence of the Auto_Open entry is sufficient to infer that it's designed to execute code automatically when the workbook is opened, likely to download and execute a secondary payload.
Heuristics 3
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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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ClamAV: Doc.Downloader.EmotetExcel01220-9936774-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Doc.Downloader.EmotetExcel01220-9936774-0
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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.txt592af8991900f2f7058dc7ea90a33320ae293c7e541db4222a7b7f9c04f59d96 |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 8469 bytes |
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