MALICIOUS
200
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic for Applications
T1204.002 Malicious File
The sample is an Excel 4.0 macro-enabled spreadsheet. Heuristics indicate the presence of an Auto_Open macro that utilizes dangerous functions, specifically the RUN function. The macro sheet contains a concatenated string that, when reconstructed, forms a URL. This URL is likely used to download and execute a second-stage payload, as indicated by the ClamAV detection name 'Xls.Dropper.Agent'.
Heuristics 4
-
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.
-
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.
-
ClamAV: Xls.Dropper.Agent-8896396-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Xls.Dropper.Agent-8896396-0
-
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.
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
xlm_macros.txtea0e3b89a6a6987bc607119d9e592f09cd25cdc763b575cd03fd800c093fbead |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 22114 bytes |
Open this report in the interactive analyzer, or submit your own file for analysis.