MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1203 Exploitation for Client Execution
The file contains Excel 4.0 macros, specifically an Auto_Open function, which is a known method for executing malicious code. The critical heuristic firings indicate the presence of dangerous formula APIs within the macro sheet, suggesting the execution of arbitrary commands. The macro sheet itself is named 'SqqVLzzFYMb', and the Auto_Open entry is confirmed.
Heuristics 3
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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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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) | 6601 bytes |
SHA-256: e14220c9555c2c637dedf8b59b5c2ec449f360272832b0de1ea3a8848b26b29d |
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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 - SqqVLzzFYM ' 0018 23 LABEL : Cell Value, String Constant - built-in-name 1 Auto_Open len=7 ptgRef3d Sheet!B191 ' 0018 25 LABEL : Cell Value, String Constant - bnowXTgFDG len=0 ' 0018 26 LABEL : Cell Value, String Constant - cudftfmfzWi len=0 ' 0018 20 LABEL : Cell Value, String Constant - eRqnq len=0 ' 0018 22 LABEL : Cell Value, String Constant - EsUUDrp len=0 ' 0018 22 LABEL : Cell Value, String Constant - FBHoiVM len=0 ' 0018 27 LABEL : Cell Value, String Constant - JJgnqxeOwUIW len=0 ' 0018 20 LABEL : Cell Value, String Constant - JSkcR len=0 ' 0018 25 LABEL : Cell Value, String Constant - KYstmtqvTa len=0 ' 0018 20 LABEL : Cell Value, String Constant - LziQm len=0 ' 0018 25 LABEL : Cell Value, String Constant - nZsICZZSvu len=0 ' 0018 27 LABEL : Cell Value, String Constant - pxTXpsVCkrEm len=0 ' 0018 26 LABEL : Cell Value, String Constant - qsCntyNWyKS len=0 ' 0018 21 LABEL : Cell Value, String Constant - SJckyT len=0 ' 0018 24 LABEL : Cell Value, String Constant - ugPvfdhmm len=0 ' 0018 22 LABEL : Cell Value, String Constant - wdhWfLz len=0 ' 0018 27 LABEL : Cell Value, String Constant - wqqoKhaqzPqF len=0 ' 0018 21 LABEL : Cell Value, String Constant - xSUJCk len=0 ' 0018 21 LABEL : Cell Value, String Constant - ySMhns len=0 ' 0018 24 LABEL : Cell Value, String Constant - yvbhAxyfW len=0 ' 0018 20 LABEL : Cell Value, String Constant - ZvQnc 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) |
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