MALICIOUS
60
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
The sample is an Excel 4.0 macro sheet identified as encrypted. The presence of an 'AUTOOPEN' heuristic suggests that macros are intended to run automatically when the document is opened. The encrypted nature and the specific heuristic firings indicate a malicious intent, likely to execute arbitrary code or download further payloads, though the exact mechanism is obscured by encryption.
Heuristics 2
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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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