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
the following user processes:
- byjjjqlf.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:
- 'wc#####tybhaxdhxxob.com':443
- 'gb####ecwora.com':443
- 'hx#####pwhlmrxmnx.com':443
- 'ho####slqfqju.com':443
- 'ti#####bvkipfueev.com':443
- 'el#####tnipymvdwt.com':443
- 'lp#####brlblgfmdq.com':443
- 'uj####aah61996y.com':443
- '74.##5.232.51':80
- 'ni#####yaenashuuw.com':443
- 'vw#####qcrfupdkfphj.com':443
- 'pq###ocbv.com':443
UDP:
- DNS ASK ee###rntf.com
- DNS ASK et#####wqrdrsulbb.com
- DNS ASK rj###lub.com
- DNS ASK eq#####eavpcybkow.com
- DNS ASK tq###ivxbii.com
- DNS ASK cy####vocbxhuec.com
- DNS ASK dr####xetonueb.com
- DNS ASK el###wqqlw.com
- DNS ASK ti###rokbf.com
- DNS ASK wl#####vwjvgqfqjwre.com
- DNS ASK hl####suaxxksfo.com
- DNS ASK na#####wiwwdyeqg.com
- DNS ASK jo###hkicas.com
- DNS ASK ae#####oqvoqicyux.com
- DNS ASK sv###oyush.com
- DNS ASK iq###gxt.com
- DNS ASK wd###pww.com
- DNS ASK ew####dulsiidhp.com
- DNS ASK hv#####pqelqtqcv.com
- DNS ASK ym###hjju.com
- DNS ASK md###ipm.com
- DNS ASK gw#####qfyujpcdl.com
- DNS ASK vl###qtq.com
- DNS ASK cb#####obofpbhajsly.com
- DNS ASK gd####yvcuvav.com
- DNS ASK ay###mgnpb.com
- DNS ASK el#####tnipymvdwt.com
- DNS ASK wc#####tybhaxdhxxob.com
- DNS ASK gb####ecwora.com
- DNS ASK kl#####jjxvirgeh.com
- DNS ASK ho####slqfqju.com
- DNS ASK ti#####bvkipfueev.com
- DNS ASK hx#####pwhlmrxmnx.com
- DNS ASK lp#####brlblgfmdq.com
- DNS ASK uj####aah61996y.com
- DNS ASK google.com
- DNS ASK ni#####yaenashuuw.com
- DNS ASK vw#####qcrfupdkfphj.com
- DNS ASK pq###ocbv.com
- DNS ASK tt###fbgokb.com
- DNS ASK nm#####sniyvvskpcp.com
- DNS ASK el###elny.com
- DNS ASK cp####hlmhsuucs.com
- DNS ASK jp###qtu.com
- DNS ASK lo###nisjsm.com
- DNS ASK cs###ievc.com
- DNS ASK pw###rhi.com
- DNS ASK hh###hsb.com
- DNS ASK jf#####ltqboplbv.com
- DNS ASK gh####spdappp.com
- DNS ASK lh####cgbnkj.com
- DNS ASK ux####tkvsqvj.com