Try this :
@echo off
setlocal enabledelayedexpansion
:://The string length of the output
set $Lcode=16
set $#=#
:://The char Map
set $l="#0=0" "#1=a" "#2=B" "#3=c" "#4=d" "#5=E" "#6=f" "#7=g" "#8=H" "#9=I" "#10=j" "#11=K" "#11=1" "#13=2" "#14=3" "#15=4" "#16=5"
:://Evaluating the char MAP
for %%a in (%$l%) do set %%~a
:://Looping in the directory for .exe files
for /f "delims=" %%x in ('dir /b/a-d "*.exe"') do (
for /l %%a in (0,1,%$Lcode%) do (
call:rand
)
ECHO ren "%%x" !$Fstring!.exe
set $Fstring=
)
pause
exit/b
:://Getting the random Char
:rand
set /a $n=!random!%%17
set $Fstring=!$Fstring!!#%$n%!
I made a char MAP of just 15 char but you can increase it with all the char (up and downcase + number). If you do it. You have to increase the value in !random!%%17
with the value of the total CHAR map(+1).
You can increase the length of the random string
by changing the value in the variable : $Lcode
(16) in this example.
The output :
ren CnpjSdee.exe 2aHg5I22EBBE2ff5.exe
ren DbatchCnpj.exe EIIg2E54aHHIEgfHE.exe
ren NTStreamColor.exe jg03f3dIfBfIfHj2.exe
ren savedialog.exe EgfdajIcdc2cf03E.exe
Press any key to continue. . .
If it's OK Remove the ECHO
to realy rename the files.