MALICIOUS
120
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.005 Visual Basic
The file is identified as an encrypted Excel 4.0 macro sheet, a common technique for delivering malware. The ClamAV detection name 'Xls.Dropper.Agent-8804422-0' strongly suggests its function as a dropper. The presence of an encrypted macro sheet indicates an attempt to obfuscate malicious code execution, likely involving VBA or XLM macros to download and execute a secondary payload.
Heuristics 3
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ClamAV: Xls.Dropper.Agent-8804422-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Xls.Dropper.Agent-8804422-0
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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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