MALICIOUS
220
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is an Excel document containing Excel 4.0 macros, specifically an Auto_Open macro that uses the RUN API function. This indicates an attempt to execute arbitrary code. The macro is designed to download a payload from the reconstructed URL 'http://web.mrginsucoxaySkEZURLMONdlTFAJCv\yzPBKIGQWqCHEPghD'. The presence of a lure to enable macros further supports its malicious intent as a downloader.
Heuristics 5
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ClamAV: Xls.Dropper.Agent-8901776-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Xls.Dropper.Agent-8901776-0
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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.
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Macro/content-enable lure medium SE_ENABLE_LUREDocument instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
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) | 75587 bytes |
SHA-256: 000d6414a0ba210458dee3d6d9e223ba25bbbcbf0e41e40dbd327d43ba305ff8 |
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Preview scriptFirst 1,000 lines of the extracted script
' 0085 11 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, visible - vr ' 0085 14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet ' 0085 26 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - ZllBFIzYngQxBVxCQ ' 0085 14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet ' 0085 14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet ' 0085 14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet ' 0085 14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet ' 0085 14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet ' 0085 14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet1 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet1 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet1 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet1 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet1 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet1 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet1 ' 0085 14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, visible - Sheet ' 0018 23 LABEL : Cell Value, String Constant - acJdiqgM len=0 ' 0018 18 LABEL : Cell Value, String Constant - aEG len=0 ' 0018 23 LABEL : Cell Value, String Constant - built-in-name 1 Auto_Open len=7 ptgRef3d vr!R44822 ' 0018 16 LABEL : Cell Value, String Constant - b len=0 ' 0018 23 LABEL : Cell Value, String Constant - bCLXzTyW len=0 ' 0018 34 LABEL : Cell Value, String Constant - bpxyIgbEGmsMUKpkljo len=0 ' 0018 25 LABEL : Cell Value, String Constant - bpzUhVIiFE len=0 ' 0018 29 LABEL : Cell Value, String Constant - BqhvGoobOpLYmU len=0 ' 0018 52 LABEL : Cell Value, String Constant - BwIMavxHRLoFXrLFuajjimYRYDPPeildCRKtb len=0 ' 0018 47 LABEL : Cell Value, String Constant - bzSrSdXpYvfpvrEUjqsCZUxzgmGODiee len=0 ' 0018 56 LABEL : Cell Value, String Constant - cjOoaptwoNqVFBpKzqFPxxkXyUhvdugkKyvpIFcxW len=0 ' 0018 45 LABEL : Cell Value, String Constant - ckxZtYwOaPMGYVscmsozRSnpyWDgwd len=0 ' 0018 48 LABEL : Cell Value, String Constant - CPZuIvhJfdGnFquVuGzSPmIgZVgxMhVfD len=0 ' 0018 22 LABEL : Cell Value, String Constant - cWolIeD len=0 ' 0018 23 LABEL : Cell Value, String Constant - Ddmybuax len=0 ' 0018 18 LABEL : Cell Value, String Constant - dFE len=0 ' 0018 29 LABEL : Cell Value, String Constant - DgLJqfzqhuFonb len=0 ' 0018 27 LABEL : Cell Value, String Constant - diTZhxYXndgY len=0 ' 0018 35 LABEL : Cell Value, String Constant - DKoBBQUXOnDvfNQkNRfb len=0 ' 0018 51 LABEL : Cell Value, String Constant - eFbnCjBnrRFDwPMiFdjfqtJefpytXmGasncI len=0 ' 0018 27 LABEL : Cell Value, String Constant - eKhzMzxrKHdN len=0 ' 0018 62 LABEL : Cell Value, String Constant - eQUuUfZroMhGyuGXlHuFcXBCiDIQGluutyVcjObaqtwoNcV len=0 ' 0018 51 LABEL : Cell Value, String Constant - fbQkaRfpYYLxYuIWEVHLkZWQifCYwDyKOcxz len=0 ' 0018 51 LABEL : Cell Value, String Constant - fNeRVuVgaspMiHyuHXmIvFcXBDjEJRGluvty len=0 ' 0018 30 LABEL : Cell Value, String Constant - FnpKmrFCkxXXyHU len=0 ' 0018 58 LABEL : Cell Value, String Constant - GLZVESqrSbnQjOmFeFQKcLiScieqHWdfoMHkmTZsBpW len=0 ' 0018 35 LABEL : Cell Value, String Constant - hhJRdGZFduHusmFCYITY len=0 ' 0018 27 LABEL : Cell Value, String Constant - hIitnGDZuTMI len=0 ' 0018 63 LABEL : Cell Value, String Constant - hTXxlicusPkJPLXaoKMVfaETlGZTJoxywCmfmRedtwzrQfYJ len=0 ' 0018 45 LABEL : Cell Value, String Constant - HYKOnOZTliFbzrnzRfBoxVQtvcwCKz len=0 ' 0018 23 LABEL : Cell Value, String Constant - IaKgQbhd len=0 ' 00 ... (truncated) |
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