MALICIOUS
220
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1566.001 Spearphishing Attachment
The file is an Excel 4.0 spreadsheet containing an Auto_Open macro, identified by multiple critical heuristics. This macro is designed to execute dangerous functions, including RUN, and is likely intended to download and execute a second-stage payload from the obfuscated URL found in the document body. The presence of a lure to enable macros further supports its malicious intent as a dropper.
Heuristics 5
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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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XLM Auto_Open with dangerous formula APIs critical OLE_XLM_DANGEROUS_FNExcel 4.0 macro sheet contains an Auto_Open / Auto_Close entry and dangerous XLM formula APIs that can invoke programs, write files, or transfer control without VBA.
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ClamAV: Xls.Dropper.Agent-8011128-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Xls.Dropper.Agent-8011128-0
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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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Macro/content-enable lure medium SE_ENABLE_LUREDocument instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
xlm_macros.txt2411a53022b9c994afd902b6820e48d694ef101d02f785501c2fe9d77d87c99f |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 39256 bytes |
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