Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,,<LS_APPDATA>\jwaroevi\rarexsdb.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'RarExsdb' = '<LS_APPDATA>\jwaroevi\rarexsdb.exe'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\rarexsdb.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DisableNotifications' = '00000001'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
To complicate detection of its presence in the operating system,
blocks the following features:
- User Account Control (UAC)
- Windows Security Center
Creates and executes the following:
- '%TEMP%\byjjjqlf.exe'
Executes the following:
- '<SYSTEM32>\svchost.exe'
Injects code into
the following system processes:
- <SYSTEM32>\svchost.exe
Modifies file system :
Creates the following files:
- %ALLUSERSPROFILE%\Application Data\ybfcuwpc.log
- <LS_APPDATA>\lawhwilb.log
- <LS_APPDATA>\jwaroevi\rarexsdb.exe
- %TEMP%\byjjjqlf.exe
- %TEMP%\ifqydaby.exe
Sets the 'hidden' attribute to the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\rarexsdb.exe
Network activity:
Connects to:
- 'ii###kek.com':443
- 'tl####qvearpxq.com':443
- 'ub###qkad.com':443
- 'tf#####cjoviuvtr.com':443
- 'ed#####awurxlobk.com':443
- 'fl#####tcedehipox.com':443
- 'tw####wnrlqcf.com':443
- 'te##etst.ru':443
- '74.##5.232.51':80
- 'wc####ixqutt.com':443
- 'mt####dphaqliva.com':443
- 'uu#####wqjujuuprpp.com':443
UDP:
- DNS ASK ii###kek.com
- DNS ASK tl####qvearpxq.com
- DNS ASK ub###qkad.com
- DNS ASK tf#####cjoviuvtr.com
- DNS ASK ed#####awurxlobk.com
- DNS ASK fl#####tcedehipox.com
- DNS ASK tw####wnrlqcf.com
- DNS ASK te##etst.ru
- DNS ASK google.com
- DNS ASK wc####ixqutt.com
- DNS ASK mt####dphaqliva.com
- DNS ASK uu#####wqjujuuprpp.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
