MALICIOUS
120
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1566.001 Spearphishing Attachment
The file is identified as a malicious Excel 4.0 macro sheet by ClamAV and heuristic analysis. The presence of encrypted macros and the 'AUTOOPEN' event strongly suggest that the macro sheet is designed to execute automatically upon opening, likely to download and execute a further stage of malware. The specific ClamAV detection name 'Xls.Dropper.Agent-8250708-0' further supports this dropper functionality.
Heuristics 3
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ClamAV: Xls.Dropper.Agent-8250708-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Xls.Dropper.Agent-8250708-0
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Encrypted Excel 4.0 macro sheet high OLE_XLM_ENCRYPTED_MACROSHEETWorkbook contains an Excel 4.0 macro sheet and BIFF FILEPASS encryption. Password-protected XLM macro sheets, especially the default Excel password path, are a common malware evasion pattern because static formula extraction may fail until the workbook is decrypted.
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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.
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