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:
- 'ui#####mawpawkhw.com':443
- 'yn#####coqqchtuf.com':443
- 'tb####lxhwdlxp.com':443
- 'bi####qlpjbkxc.com':443
- 'fc####ovpkvovc.com':443
- 'ev#####ebsmnuyluvm.com':443
- 'qy#####gruansexcha.com':443
- 'hb####rhuuuuu.com':443
- '74.##5.232.51':80
- 'sw####ucdexbhwm.com':443
- 'jy###qilh.com':443
- 'ck#####extanlvcrdig.com':443
UDP:
- DNS ASK cf###pilqri.com
- DNS ASK rm#####xpugbyalc.com
- DNS ASK ky####xlmofqce.com
- DNS ASK hv####pcbodottn.com
- DNS ASK kk###hwavbp.com
- DNS ASK tp####xuurivb.com
- DNS ASK ds#####rcykkymgcmtk.com
- DNS ASK hv#####wstgqpjynk.com
- DNS ASK nj#####rfobmxdib.com
- DNS ASK mk###utycli.com
- DNS ASK wq####kovskjsl.com
- DNS ASK xc####gesqxsk.com
- DNS ASK fb#####hluqrpulk.com
- DNS ASK gb####gfxccxlui.com
- DNS ASK mh###wobtbl.com
- DNS ASK sc###qgj.com
- DNS ASK mf###pjhsw.com
- DNS ASK cn###jte.com
- DNS ASK hy####nbmfxdy.com
- DNS ASK xk###nrn.com
- DNS ASK gp#####hrsxwnytibuk.com
- DNS ASK bi####oilxejw.com
- DNS ASK tb####lxhwdlxp.com
- DNS ASK sw####ucdexbhwm.com
- DNS ASK yn#####coqqchtuf.com
- DNS ASK ev#####ebsmnuyluvm.com
- DNS ASK ui#####mawpawkhw.com
- DNS ASK hb####rhuuuuu.com
- DNS ASK google.com
- DNS ASK qy#####gruansexcha.com
- DNS ASK jy###qilh.com
- DNS ASK ck#####extanlvcrdig.com
- DNS ASK fc####ovpkvovc.com
- DNS ASK dg###udesp.com
- DNS ASK oj#####ynxjxcxep.com
- DNS ASK ar####bpmeamfhn.com
- DNS ASK nn#####cysqclkmcgp.com
- DNS ASK ga###nbcxb.com
- DNS ASK lq####dcxuphhjy.com
- DNS ASK bi####qlpjbkxc.com
- DNS ASK bl###bac.com
- DNS ASK qh###ntlwo.com
- DNS ASK kc#####ebjudxyesh.com
Miscellaneous:
Creates and executes the following:
- '%TEMP%\byjjjqlf.exe'
Executes the following:
- '<SYSTEM32>\svchost.exe'
