MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1203 Exploitation for Client Execution
The file is an Excel macro-enabled document containing Excel 4.0 (XLM) macros. The critical heuristics indicate the presence of an Auto_Open defined name and the use of dangerous formula APIs, specifically the RUN function. This strongly suggests the macro is designed to execute arbitrary code upon opening, likely to download and run a second-stage payload. No specific family could be identified.
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) | 6637 bytes |
SHA-256: ce562137e543ef220ba47218b283a408b3eccb4494042a5c2c5a3d93519d9a0a |
|||
Preview scriptFirst 1,000 lines of the extracted script
' 0085 14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, visible - Sheet ' 0085 20 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, visible - QItpTaPfQoE ' 0018 23 LABEL : Cell Value, String Constant - built-in-name 1 Auto_Open len=7 ptgRef3d Sheet!C175 ' 0018 20 LABEL : Cell Value, String Constant - bdFYB len=0 ' 0018 27 LABEL : Cell Value, String Constant - eKKmgelYJGQD len=0 ' 0018 26 LABEL : Cell Value, String Constant - EVgVPwDPwJF len=0 ' 0018 23 LABEL : Cell Value, String Constant - FtNpArMe len=0 ' 0018 20 LABEL : Cell Value, String Constant - GNVjG len=0 ' 0018 25 LABEL : Cell Value, String Constant - gUogTyoePJ len=0 ' 0018 23 LABEL : Cell Value, String Constant - HJYKzBva len=0 ' 0018 22 LABEL : Cell Value, String Constant - ijyAyTx len=0 ' 0018 24 LABEL : Cell Value, String Constant - JLOJKvlEw len=0 ' 0018 20 LABEL : Cell Value, String Constant - nboMz len=0 ' 0018 27 LABEL : Cell Value, String Constant - NJwDUOZKrUdx len=0 ' 0018 21 LABEL : Cell Value, String Constant - OqtPwD len=0 ' 0018 26 LABEL : Cell Value, String Constant - owyOkgzKmef len=0 ' 0018 22 LABEL : Cell Value, String Constant - PcPfmgB len=0 ' 0018 26 LABEL : Cell Value, String Constant - ptyQEDKTxFg len=0 ' 0018 26 LABEL : Cell Value, String Constant - SFQNWMDHmvf len=0 ' 0018 25 LABEL : Cell Value, String Constant - skdRmkvDYY len=0 ' 0018 25 LABEL : Cell Value, String Constant - twUjCiTDpL len=0 ' 0018 23 LABEL : Cell Value, String Constant - UQqiJsiH len=0 ' 0018 20 LABEL : Cell Value, String Constant - YPxnP 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 ' 00 ... (truncated) |
|||
Open this report in the interactive analyzer, or submit your own file for analysis.