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
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:
- 'xq#####xcgowhaoapj.com':443
- 'aw#####alyisqceqla.com':443
- 'xt#####bujxoxggdfxi.com':443
- 'mc#####gyeyjtwbtcyy.com':443
- 'qi#####dwybingntmhf.com':443
- 'om####wsfvki.com':443
- 'bm###jssu.com':443
- 'cc####72yyeuj6y.com':443
- '74.##5.232.51':80
- 'gk####mlhuxgh.com':443
- 'bk#####ejmmgnlwqqgc.com':443
- 'fj#####vroddwyspk.com':443
UDP:
- DNS ASK pk###yalrwr.com
- DNS ASK da####rmrwnjgnc.com
- DNS ASK wc###bgtn.com
- DNS ASK nr####jyneymj.com
- DNS ASK ms###aep.com
- DNS ASK te####gikigoq.com
- DNS ASK ne####wumercuea.com
- DNS ASK lt#####gqpvxblixvg.com
- DNS ASK at###xhylow.com
- DNS ASK df#####aoofisdjrsmo.com
- DNS ASK an####yibnyjr.com
- DNS ASK eo#####wuuqykupitcr.com
- DNS ASK cm###sjy.com
- DNS ASK ar###holue.com
- DNS ASK de####kfgtynj.com
- DNS ASK gq#####ehiprgufirjs.com
- DNS ASK mt###fgo.com
- DNS ASK dx###bsh.com
- DNS ASK go####mktweauwf.com
- DNS ASK te###pmyek.com
- DNS ASK le###wurlm.com
- DNS ASK vv###mccdu.com
- DNS ASK aw#####alyisqceqla.com
- DNS ASK xt#####bujxoxggdfxi.com
- DNS ASK xq#####xcgowhaoapj.com
- DNS ASK qi#####dwybingntmhf.com
- DNS ASK om####wsfvki.com
- DNS ASK gk####mlhuxgh.com
- DNS ASK cc####72yyeuj6y.com
- DNS ASK google.com
- DNS ASK bm###jssu.com
- DNS ASK bk#####ejmmgnlwqqgc.com
- DNS ASK fj#####vroddwyspk.com
- DNS ASK vj#####rthgqgbrqia.com
- DNS ASK jv#####ulcwddaebal.com
- DNS ASK nm###gvoa.com
- DNS ASK gm#####tpapunbup.com
- DNS ASK wj####afqqujb.com
- DNS ASK rh#####eqcnmfirjt.com
- DNS ASK rr####hsaoye.com
- DNS ASK mc#####gyeyjtwbtcyy.com
- DNS ASK mn####weconrc.com
- DNS ASK rl###evwndc.com
- DNS ASK xl###jfdjus.com
Miscellaneous:
Creates and executes the following:
- '%TEMP%\byjjjqlf.exe'
Executes the following:
- '<SYSTEM32>\svchost.exe'