MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1566.001 Spearphishing Attachment
The critical heuristics OLE_XLM_AUTOOPEN and OLE_XLM_AUTOOPEN_DEFINEDNAME indicate the presence of an Excel 4.0 macro with an Auto_Open entry, which is a common technique for initial execution. ClamAV detection further confirms its malicious nature, identifying it as Emotet. The macro sheet contains references to sheet names like 'Blood Pressure Data', suggesting a lure document. The primary function of the macro is to execute code upon opening, consistent with Emotet's typical behavior of downloading and executing further stages.
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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