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 execution of the following system utilities:
- Windows Update
- Windows Security Center
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:
- 'jl#####ergjoflssyg.com':443
- 'kb#####bgfmoneuoj.com':443
- 'ws####eiancyv.com':443
- 'oa###ycoy.com':443
- 'kb####aakcntdet.com':443
- 'oe####hkrnvxg.com':443
- 'qi###fqqp.com':443
- 'bu######gecomedy9238.com':443
- '74.##5.232.51':80
- 'yr#####lxrxrbpett.com':443
- 'fm###kcxgr.com':443
- 'wd###aya.com':443
UDP:
- DNS ASK oa###ycoy.com
- DNS ASK yp#####jytynbqin.com
- DNS ASK oe####hkrnvxg.com
- DNS ASK kb####aakcntdet.com
- DNS ASK dv#####qgfnixlrdb.com
- DNS ASK gf###nvw.com
- DNS ASK au#####gpngdpkaf.com
- DNS ASK ci#####jfbhbqtlqlrn.com
- DNS ASK jl#####ergjoflssyg.com
- DNS ASK qi###fqqp.com
- DNS ASK wd###aya.com
- DNS ASK google.com
- DNS ASK bu######gecomedy9238.com
- DNS ASK ws####eiancyv.com
- DNS ASK kb#####bgfmoneuoj.com
- DNS ASK fm###kcxgr.com
- DNS ASK yr#####lxrxrbpett.com
