MALICIOUS
120
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.005 Visual Basic
The critical ClamAV detection and high heuristic firing for an encrypted Excel 4.0 macro sheet indicate a malicious dropper. The presence of an 'autoopen' macro suggests an attempt to automatically execute malicious code upon opening. The encrypted nature of the macro sheet further supports its malicious intent, likely to obscure the payload delivery mechanism.
Heuristics 3
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ClamAV: Xls.Dropper.Agent-7690074-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Xls.Dropper.Agent-7690074-0
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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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