MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic for Applications
T1059.001 PowerShell
T1059.003 Windows Command Shell
The file is an Excel 4.0 macro-enabled spreadsheet. Static analysis identified an Auto_Open defined name, indicating that macros will execute automatically upon opening. The critical heuristic OLE_XLM_DANGEROUS_FN firing with RUN=0 suggests the macro attempts to execute a command. While the specific command is not fully recoverable from the provided output, the presence of Auto_Open and the dangerous function usage strongly indicates malicious intent, likely to download and execute a secondary payload.
Heuristics 3
-
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.
-
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.txt48e8d7fd343e03d0ca758a1297413407bd3ec4246410e8dbeef081139f9cfa58 |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 6401 bytes |
Open this report in the interactive analyzer, or submit your own file for analysis.