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Profil

Win32.HLLW.Autoruner2.56435

Added to the Dr.Web virus database: 2019-08-09

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKCU>\software\Microsoft\Windows\CurrentVersion\Run] '263aa8c95eb91deeea35e0729495c9be' = '"%HOMEPATH%\svchost.exe" ..'
  • [<HKLM>\software\Microsoft\Windows\CurrentVersion\Run] '263aa8c95eb91deeea35e0729495c9be' = '"%HOMEPATH%\svchost.exe" ..'
Creates or modifies the following files
  • %HOMEPATH%\start menu\programs\startup\filename.exe
  • %HOMEPATH%\start menu\programs\startup\263aa8c95eb91deeea35e0729495c9be.exe
Creates the following files on removable media
  • <Drive name for removable media>:\263aa8c95eb91deeea35e0729495c9be.exe
  • <Drive name for removable media>:\autorun.inf
Malicious functions
To bypass firewall, removes or modifies the following registry keys
  • [<HKLM>\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%HOMEPATH%\svchost.exe' = '%HOMEPATH%\svchost.exe:*:Enabled:svchos...
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
Executes the following
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%HOMEPATH%\svchost.exe" "svchost.exe" ENABLE
Injects code into
the following user processes:
  • svchost.exe
Modifies file system
Creates the following files
  • <LS_APPDATA>\ilrhl.reg
  • <LS_APPDATA>\bdxtg.vbs
  • <LS_APPDATA>\jvbyjjcw.vbs
  • <LS_APPDATA>\filename.exe
  • <LS_APPDATA>\temo.reg
  • %HOMEPATH%\svchost.exe
Sets the 'hidden' attribute to the following files
  • <Full path to file>
  • %HOMEPATH%\start menu\programs\startup\filename.exe
  • <LS_APPDATA>\filename.exe
  • %HOMEPATH%\svchost.exe
  • <Drive name for removable media>:\263aa8c95eb91deeea35e0729495c9be.exe
  • <Drive name for removable media>:\autorun.inf
  • %HOMEPATH%\start menu\programs\startup\263aa8c95eb91deeea35e0729495c9be.exe
Deletes the following files
  • <LS_APPDATA>\bdxtg.vbs
  • <LS_APPDATA>\jvbyjjcw.vbs
Substitutes the following files
  • <LS_APPDATA>\bdxtg.vbs
  • <LS_APPDATA>\jvbyjjcw.vbs
Network activity
Connects to
  • 'localhost':5552
Miscellaneous
Creates and executes the following
  • '<SYSTEM32>\wscript.exe' "<LS_APPDATA>\bdxtg.vbs"
  • '<SYSTEM32>\wscript.exe' "<LS_APPDATA>\jvbyjjcw.vbs"
  • '%HOMEPATH%\svchost.exe'
  • '<SYSTEM32>\reg.exe' import <LS_APPDATA>\ilrhl.reg' (with hidden window)
  • '<SYSTEM32>\reg.exe' import <LS_APPDATA>\temo.reg' (with hidden window)
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%HOMEPATH%\svchost.exe" "svchost.exe" ENABLE' (with hidden window)
Executes the following
  • '<SYSTEM32>\reg.exe' import <LS_APPDATA>\ilrhl.reg
  • '<SYSTEM32>\reg.exe' import <LS_APPDATA>\temo.reg
  • '<SYSTEM32>\wscript.exe' "<LS_APPDATA>\bdxtg.vbs"
  • '<SYSTEM32>\wscript.exe' "<LS_APPDATA>\jvbyjjcw.vbs"