MALICIOUS
120
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1566.001 Spearphishing Attachment
The critical ClamAV heuristic and high-severity heuristic for encrypted Excel 4.0 macros indicate the presence of malicious macro code. The file is identified as a dropper, suggesting its primary purpose is to download and execute additional malware. The presence of macro sheets points to a likely initial access vector via spearphishing attachment.
Heuristics 3
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ClamAV: Xls.Dropper.Agent-9318544-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Xls.Dropper.Agent-9318544-0
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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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