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Win32.Bolik.2

Added to the Dr.Web virus database: 2019-03-11

Virus description added:

Technical Information

Malicious functions
Injects code into
the following system processes:
  • %WINDIR%\explorer.exe
Modifies file system
Creates the following files
  • %LOCALAPPDATA%\ybhaycla
  • %LOCALAPPDATA%\viqahidiy\shlwapi.dll
  • %LOCALAPPDATA%\viqahidiy\msvcrt.dll
  • %LOCALAPPDATA%\viqahidiy\user32.dll
  • %LOCALAPPDATA%\viqahidiy\gdi32.dll
  • %LOCALAPPDATA%\viqahidiy\advapi32.dll
  • %LOCALAPPDATA%\viqahidiy\iqmoqeqe.myr
  • %LOCALAPPDATA%\yrhinuy\dnsapi.dll
  • %LOCALAPPDATA%\yrhinuy\powrprof.dll
  • %LOCALAPPDATA%\yrhinuy\user32.dll
  • %LOCALAPPDATA%\yrhinuy\rpcrt4.dll
  • %LOCALAPPDATA%\yrhinuy\msvcrt.dll
  • %LOCALAPPDATA%\yrhinuy\tydyaqpo.ost
  • %LOCALAPPDATA%\radabioqh\shlwapi.dll
  • %LOCALAPPDATA%\radabioqh\msvcrt.dll
  • %LOCALAPPDATA%\radabioqh\byloup.cay
  • %LOCALAPPDATA%\kaliolylm\msvcrt.dll
  • %LOCALAPPDATA%\kaliolylm\bayzz.roi
  • %LOCALAPPDATA%\viqahidiy\ole32.dll
  • %LOCALAPPDATA%\viqahidiy\comctl32.dll
Deletes the following files
  • %LOCALAPPDATA%\kaliolylm\bayzz.roi
  • %LOCALAPPDATA%\viqahidiy\runonce.exe
  • %LOCALAPPDATA%\viqahidiy\ole32.dll
  • %LOCALAPPDATA%\viqahidiy\msvcrt.dll
  • %LOCALAPPDATA%\viqahidiy\iqmoqeqe.myr
  • %LOCALAPPDATA%\viqahidiy\gdi32.dll
  • %LOCALAPPDATA%\viqahidiy\comctl32.dll
  • %LOCALAPPDATA%\viqahidiy\advapi32.dll
  • %LOCALAPPDATA%\yrhinuy\user32.dll
  • %LOCALAPPDATA%\yrhinuy\tydyaqpo.ost
  • %LOCALAPPDATA%\viqahidiy\shlwapi.dll
  • %LOCALAPPDATA%\yrhinuy\spoolsv.exe
  • %LOCALAPPDATA%\yrhinuy\powrprof.dll
  • %LOCALAPPDATA%\yrhinuy\msvcrt.dll
  • %LOCALAPPDATA%\yrhinuy\dnsapi.dll
  • %LOCALAPPDATA%\radabioqh\shlwapi.dll
  • %LOCALAPPDATA%\radabioqh\regedt32.exe
  • %LOCALAPPDATA%\radabioqh\msvcrt.dll
  • %LOCALAPPDATA%\radabioqh\byloup.cay
  • %LOCALAPPDATA%\kaliolylm\msvcrt.dll
  • %LOCALAPPDATA%\kaliolylm\ctfmon.exe
  • %LOCALAPPDATA%\yrhinuy\rpcrt4.dll
  • %LOCALAPPDATA%\viqahidiy\user32.dll
Network activity
UDP
  • DNS ASK sy###time.info
Miscellaneous
Creates and executes the following
  • '%LOCALAPPDATA%\kaliolylm\ctfmon.exe'
  • '%LOCALAPPDATA%\radabioqh\regedt32.exe'
  • '%LOCALAPPDATA%\yrhinuy\spoolsv.exe'
  • '%LOCALAPPDATA%\viqahidiy\runonce.exe'
Executes the following
  • '<SYSTEM32>\svchost.exe'
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