MALICIOUS
262
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1566.001 Spearphishing Attachment
The file contains Excel 4.0 macros, including an Auto_Open entry, which is a strong indicator of malicious intent. These macros are designed to execute and download payloads from the three provided URLs. ClamAV also detected this file as 'Xls.Downloader.Emotet-MSOLE2-af43432fbcb8603c-9980047-0', further supporting the Emotet family attribution.
Heuristics 6
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ClamAV: Xls.Downloader.Emotet-MSOLE2-af43432fbcb8603c-9980047-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Xls.Downloader.Emotet-MSOLE2-af43432fbcb8603c-9980047-0
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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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URL reconstructed from XLM cell array (3 URLs) critical OLE_XLM_CELL_ARRAY_URLExcel 4.0 macro sheet stages its payload URL across the BIFF8 Shared String Table (one quoted-char SST entry concatenated with & at runtime), across individual numeric cells (one ASCII charcode per cell), or split across multi-char fragment cells a download formula concatenates by reference (=A1&A2&… / CONCATENATE(...)). The reconstructed URL is invisible to literal-bytes URL extraction because it is never contiguous in the workbook stream. URLs were recovered by walking the BIFF8 record stream and decoding SST entries, LABELSST/RK/NUMBER cells, and FORMULA cell-reference concatenation in token order.
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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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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://pvplglobal.com/G3Sc73WpcSo5/211021.gif Referenced by macro
- https://ivyfashion.in/9EzVsRwPKml/211021.gifReferenced by macro
- https://m2autopartsindia.com/Ho2EjThhAmw/211021.gifReferenced by macro
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) | 10823 bytes |
SHA-256: 3da0d9813b47f00eb907c60ebde00ad0aa62499521c60e811eb27eb62be73fd0 |
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Preview scriptFirst 1,000 lines of the extracted script
' 0085 13 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, visible - Shee ' 0085 13 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sbur ' 0085 13 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sbur ' 0085 13 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sbur ' 0085 11 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, hidden - Ko ' 0085 13 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, hidden - DEFW ' 0085 13 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, hidden - DEFW ' 0085 12 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, hidden - DEF ' 0085 13 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, hidden - Beff ' 0085 13 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, hidden - Beff ' 0085 13 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, hidden - Beff ' 0085 13 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, hidden - Beff ' 0085 13 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, hidden - Beff ' 0085 13 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, hidden - Beff ' 0085 13 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, hidden - Beff ' 0085 13 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, hidden - Beff ' 0018 29 LABEL : Cell Value, String Constant - _xlfn.ARABIC hidden len=2 ptgErr *INCOMPLETE FORMULA PARSING* Remaining, unparsed expression: b'\x1d' ' 0018 26 LABEL : Cell Value, String Constant - EFEF len=7 ptgRef3d Beff!D3 ' 0018 26 LABEL : Cell Value, String Constant - GRRG len=7 ptgRef3d Shee!G14 ' 0018 26 LABEL : Cell Value, String Constant - RFWF len=7 ptgRef3d Beff!C4 ' 0018 26 LABEL : Cell Value, String Constant - RTWE len=7 ptgRef3d Beff!C4 ' 0018 23 LABEL : Cell Value, String Constant - built-in-name 1 Auto_Open len=7 ptgRef3d Shee!G1 ' 002a 2 PRINTHEADERS : Print Row/Column Labels ' 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 ' 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 ' 002a 2 PRINTHEADERS : Print Row/Column Labels ' 002a 2 PRINTHEADERS : Print Row/Column Labels ' 002a 2 PRINTHEADERS : Print Row/Column Labels ' 002a 2 PRINTHEADERS : Print Row/Column Labels ' 002a 2 PRINTHEADERS : Print Row/Column Labels ' 002a 2 PRINTHEADERS : Print Row/Column Labels ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 002a 2 PRINTHEADERS : Print Row/Column Labels ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 002a 2 PRINTHEADERS : Print Row/Column Labels ' 002a 2 PRINTHEADERS : Print Row/Column Labels ' 00fd 10 LABELSST : Cell Value, String Const ... (truncated) |
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