MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1203 Exploitation for Client Execution
The sample is an Excel 4.0 macro sheet that contains an Auto_Open defined name, indicating it is designed to execute automatically upon opening. Heuristics also identified dangerous formula APIs within the macro sheet, suggesting it attempts to perform actions beyond standard spreadsheet operations. The presence of an Auto_Open entry and the use of dangerous functions strongly suggest an attempt to execute arbitrary code.
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.txt |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 6722 bytes |
SHA-256: d768e27550b929dfd7b1d7a26fef481340e74858abe9a40f4cdbd0516dd12d1f |
|||
Preview scriptFirst 1,000 lines of the extracted script
' 0085 14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, visible - Sheet ' 0085 17 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, visible - AKIRgvGw ' 0018 23 LABEL : Cell Value, String Constant - built-in-name 1 Auto_Open len=7 ptgRef3d Sheet!H155 ' 0018 20 LABEL : Cell Value, String Constant - AwZgN len=0 ' 0018 26 LABEL : Cell Value, String Constant - cWDGHsSxklX len=0 ' 0018 25 LABEL : Cell Value, String Constant - cYzxeQlQct len=0 ' 0018 26 LABEL : Cell Value, String Constant - eGMzApOJrir len=0 ' 0018 27 LABEL : Cell Value, String Constant - gWzXrqPkYtLz len=0 ' 0018 22 LABEL : Cell Value, String Constant - hqXYslz len=0 ' 0018 22 LABEL : Cell Value, String Constant - JuarnIG len=0 ' 0018 22 LABEL : Cell Value, String Constant - LyEydWw len=0 ' 0018 21 LABEL : Cell Value, String Constant - mnJBQQ len=0 ' 0018 21 LABEL : Cell Value, String Constant - nimrqv len=0 ' 0018 23 LABEL : Cell Value, String Constant - PwuXXJmO len=0 ' 0018 23 LABEL : Cell Value, String Constant - TnYKkgtg len=0 ' 0018 23 LABEL : Cell Value, String Constant - UjTbMhhY len=0 ' 0018 27 LABEL : Cell Value, String Constant - utPPuibZlfma len=0 ' 0018 26 LABEL : Cell Value, String Constant - WcZvRdiRfDN len=0 ' 0018 23 LABEL : Cell Value, String Constant - wNadXcGe len=0 ' 0018 27 LABEL : Cell Value, String Constant - XxuphNPPIWXk len=0 ' 0018 20 LABEL : Cell Value, String Constant - znXDw len=0 ' 0018 24 LABEL : Cell Value, String Constant - ZsrJvQZxc len=0 ' 0018 20 LABEL : Cell Value, String Constant - ZYXxK len=0 ' 002a 2 PRINTHEADERS : Print Row/Column Labels ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd ... (truncated) |
|||
Open this report in the interactive analyzer, or submit your own file for analysis.