MALICIOUS
160
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1566.001 Spearphishing Attachment
The sample contains Excel 4.0 macros, specifically an Auto_Open entry, which is a critical indicator of malicious activity. ClamAV also identified it as 'Xls.Dropper.Agent-8226142-0', suggesting its purpose is to drop or execute further malicious payloads. The presence of both XLM and VBA macros indicates a multi-stage approach to achieve its malicious objectives.
Heuristics 4
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Excel 4.0 Auto_Open defined name critical OLE_XLM_AUTOOPEN_DEFINEDNAMEoletools recovered an Auto_Open / Auto_Close entry from an Excel 4.0 macro sheet. The raw BIFF name can be tokenized or partially opaque to byte-string checks, but the recovered macro listing confirms the workbook has an XLM auto-execution entry.
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ClamAV: Xls.Dropper.Agent-8226142-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Xls.Dropper.Agent-8226142-0
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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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VBA macros detected medium OLE_VBA_MACROSDocument contains VBA macro code
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
xlm_macros.txtdc304a1344bd38b2abcf179d19d91b91f67e2595151b21a8e9491b3fa31c5140 |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 140737 bytes |
macros.bas7a3e200e695630d84aa6edd8aaa75fff265a0b95e24b6dd3169bd88437962d38 |
vba-macro | oletools.olevba.extract_macros (decoded VBA source) | 723 bytes |
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