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:
- 'qi###fkx.com':443
- 'ko###dncog.com':443
- 'nq####niuvyxs.com':443
- 'sx####piiknswi.com':443
- 'hj####gjgyapjk.com':443
- 'ng#####fxjdsmmribt.com':443
- 'gu#####xrujnobfytud.com':443
- 'ju####hh652te6y.com':443
- '74.##5.232.51':80
- 'cd###wct.com':443
- 'au#####vehxqmlbb.com':443
- 'eh#####efjihylvld.com':443
UDP:
- DNS ASK mq###ouny.com
- DNS ASK nk####wpuwjgrkv.com
- DNS ASK fw#####yecylcppfyo.com
- DNS ASK hk#####eppgcjdnj.com
- DNS ASK te#####xmnnllxwtg.com
- DNS ASK bm####tjsfhrmac.com
- DNS ASK fl####rgtmxk.com
- DNS ASK vx#####ncylbahky.com
- DNS ASK du####kkhrgkfo.com
- DNS ASK mj###gtmhm.com
- DNS ASK al###xhjlt.com
- DNS ASK tj####lnyauwegp.com
- DNS ASK fh#####dmswtelngqwb.com
- DNS ASK tf####lpdteaya.com
- DNS ASK gg###ooy.com
- DNS ASK gj#####itpcxkbgh.com
- DNS ASK cc###mcslut.com
- DNS ASK dc####pqoyjr.com
- DNS ASK ug#####euwddjxhbdo.com
- DNS ASK hp#####vfkpbwswnfn.com
- DNS ASK bg###ejyk.com
- DNS ASK hk#####egrfebwmp.com
- DNS ASK mw####iekeggj.com
- DNS ASK ag###gem.com
- DNS ASK fu###xvw.com
- DNS ASK um###cub.com
- DNS ASK ax###sftsb.com
- DNS ASK pl####hiuitjrr.com
- DNS ASK uc#####gaxmkmycmo.com
- DNS ASK ki###vtacq.com
- DNS ASK kl###dwxoe.com
- DNS ASK lo#####mjqrkltwurj.com
- DNS ASK pt####sdekradnk.com
- DNS ASK hl#####rygymxdhwl.com
- DNS ASK qj#####strfmmgdvv.com
- DNS ASK nh####ikyjps.com
- DNS ASK dl####ibtkke.com
- DNS ASK bing.com
- DNS ASK sd###mlpvos.com
- DNS ASK sw####jxmdnj.com
- DNS ASK ex####pfkfjie.com
- DNS ASK mr####vsctifb.com
- DNS ASK me###qgjsh.com
- DNS ASK bs#####yxnboqraqh.com
- DNS ASK bb###ohtwr.com
- DNS ASK hj####gjgyapjk.com
- DNS ASK sx####piiknswi.com
- DNS ASK aq###vcaio.com
- DNS ASK jq####qmgfvtw.com
- DNS ASK fw#####rjsiixckw.com
- DNS ASK vh###uhgr.com
- DNS ASK tm#####vvoibfvocug.com
- DNS ASK eh#####efjihylvld.com
- DNS ASK au#####vehxqmlbb.com
- DNS ASK gu#####xrujnobfytud.com
- DNS ASK google.com
- DNS ASK ju####hh652te6y.com
- DNS ASK qi###fkx.com
- DNS ASK ng#####fxjdsmmribt.com
- DNS ASK ko###dncog.com
- DNS ASK cd###wct.com
- DNS ASK nq####niuvyxs.com
- DNS ASK dr####bpewwhn.com
- DNS ASK jk#####vmmahmchcm.com
- DNS ASK vg###ftbxv.com
- DNS ASK lv#####lpamlcefev.com
- DNS ASK mt#####yvefcosfrpn.com
- DNS ASK aa#####mtyyxpdsp.com
- DNS ASK vn#####dxkdnenkxbpe.com
- DNS ASK lu####slgpcpt.com
- DNS ASK wa####bfibdnrhh.com
- DNS ASK ei###cvgl.com
- DNS ASK ub###ajtcn.com
- DNS ASK im#####becicwdgpnm.com
- DNS ASK ug####seblck.com
- DNS ASK jq###ilsuqc.com
- DNS ASK fh####rrjpvfj.com
- DNS ASK kf#####xsfeltwkw.com
- DNS ASK ae###kyvqmk.com
- DNS ASK kf#####nvdsbruypx.com
- DNS ASK ij#####gejoflewk.com
- DNS ASK pq####geoyqejj.com
- DNS ASK xh###ewdpbl.com
Miscellaneous:
Creates and executes the following:
- '%TEMP%\byjjjqlf.exe'
Executes the following:
- '<SYSTEM32>\svchost.exe'