MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1203 Exploitation for Client Execution
The file is an Excel document containing Excel 4.0 macros, specifically an Auto_Open macro. This macro is designed to execute automatically when the workbook is opened, indicating an attempt to run arbitrary code. The presence of dangerous formula APIs within the macro further increases the risk. The exact payload or further actions are not discernible from the provided evidence, leading to an unknown family classification.
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) | 6647 bytes |
SHA-256: cd5da7cd6dd8696837d924de5a5c9d242df599de7d9c5e6620bc691d02d638ac |
|||
Preview scriptFirst 1,000 lines of the extracted script
' 0085 14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, visible - Sheet ' 0085 19 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, visible - rWQetvdbSo ' 0018 22 LABEL : Cell Value, String Constant - AkCGgfA len=0 ' 0018 23 LABEL : Cell Value, String Constant - built-in-name 1 Auto_Open len=7 ptgRef3d Sheet!D195 ' 0018 26 LABEL : Cell Value, String Constant - hEUETgEpMhM len=0 ' 0018 22 LABEL : Cell Value, String Constant - HwYPfNo len=0 ' 0018 21 LABEL : Cell Value, String Constant - hXZogT len=0 ' 0018 25 LABEL : Cell Value, String Constant - iqUjRMftuE len=0 ' 0018 25 LABEL : Cell Value, String Constant - iRCNmPSAqw len=0 ' 0018 22 LABEL : Cell Value, String Constant - ItSPHoq len=0 ' 0018 23 LABEL : Cell Value, String Constant - lwupYTBD len=0 ' 0018 20 LABEL : Cell Value, String Constant - mkxEW len=0 ' 0018 25 LABEL : Cell Value, String Constant - MniJyTTVPG len=0 ' 0018 26 LABEL : Cell Value, String Constant - nAqgoOSaOyS len=0 ' 0018 26 LABEL : Cell Value, String Constant - nbdtkLISSXs len=0 ' 0018 26 LABEL : Cell Value, String Constant - PCsEIGxqqsI len=0 ' 0018 25 LABEL : Cell Value, String Constant - SUGmmsHYnS len=0 ' 0018 25 LABEL : Cell Value, String Constant - uUUjcIFeyB len=0 ' 0018 22 LABEL : Cell Value, String Constant - VFceeOq len=0 ' 0018 21 LABEL : Cell Value, String Constant - VzpWqf len=0 ' 0018 26 LABEL : Cell Value, String Constant - XygbTcALpSo len=0 ' 0018 25 LABEL : Cell Value, String Constant - YncpnXHJqO len=0 ' 0018 24 LABEL : Cell Value, String Constant - yTqXFVCqU 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 ... (truncated) |
|||
Open this report in the interactive analyzer, or submit your own file for analysis.