Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'HslKkser' = '<LS_APPDATA>\ymtxapub\hslkkser.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,,<LS_APPDATA>\ymtxapub\hslkkser.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 the following features:
- User Account Control (UAC)
- Windows Security Center
Creates and executes the following:
- '%TEMP%\yxjipudx.exe' admin
- '%TEMP%\yxjipudx.exe' elevate
Executes the following:
- '<SYSTEM32>\svchost.exe'
Injects code into
the following system processes:
- <SYSTEM32>\svchost.exe
Modifies file system :
Creates the following files:
- %TEMP%\oemunpwe.sys
- <LS_APPDATA>\ymtxapub\hslkkser.exe
- %WINDIR%\Temp\74b49ff8
- %WINDIR%\Temp\1e4643fd
- %APPDATA%\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hslkkser.exe
- %TEMP%\yxjipudx.exe
- <LS_APPDATA>\ivxggrvl.log
- C:\ProgramData\vagbbgdm.log
Sets the 'hidden' attribute to the following files:
- %APPDATA%\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hslkkser.exe
Deletes the following files:
- %TEMP%\oemunpwe.sys
- <SYSTEM32>\spool\drivers\w32x86\3\mxdwdui.BUD
Network activity:
Connects to:
- 'localhost':5357
UDP:
- DNS ASK vr###vexnj.com
- DNS ASK gm###ugko.com
- DNS ASK fp#####myglqqdly.com
- DNS ASK sd#####aetkjbaadd.com
- DNS ASK df####apewrb.com
- DNS ASK yt####ambvydsa.com
- DNS ASK ri#####toushpqkybt.com
- DNS ASK bk#####wwqjowkdcd.com
- DNS ASK vu###mcu.com
- DNS ASK qf###fuv.com
- DNS ASK bk###pgyhl.com
- DNS ASK rg####lheqob.com
- DNS ASK mb####pqvvtty.com
- DNS ASK dj####lvppmrjm.com
- DNS ASK eq###dqtsyh.com
- DNS ASK ut###pia.com
- DNS ASK yn#####yjkpgtugtwo.com
- DNS ASK cb####hmpkyuub.com
- DNS ASK mm####pdwagcg.com
- DNS ASK fh#####cqnsserdoan.com
- DNS ASK mk####kmghlh.com
- DNS ASK au####symisdi.com
- DNS ASK tn#####kojxrqhhjfvi.com
- DNS ASK wh####votltifj.com
- DNS ASK ry####dufabqc.com
- DNS ASK dl###vcpabt.com
- DNS ASK xo####nddplwap.com
- DNS ASK qv#####tcmpfivpbhma.com
- DNS ASK eb####absnpja.com
- DNS ASK xp#####twgpeupcfy.com
- DNS ASK am#####mowgdkmvwky.com
- DNS ASK yo####ubbqsr.com
- DNS ASK wg###ojfpyq.com
- DNS ASK vc###ijuc.com
- DNS ASK bt#####qjporbsjd.com
- DNS ASK fe###fqjneg.com
- DNS ASK dt###yyl.com
- DNS ASK mk#####xcbljwswkibo.com
- DNS ASK cc####sdggihuue.com
- DNS ASK vp###cbo.com
- DNS ASK vm####vmtfjtboi.com
- DNS ASK vg#####tefriixwohwm.com
- DNS ASK ux#####jptiupnhdafy.com
- DNS ASK hf###hngo.com
- DNS ASK fn#####hqclyqtdfwl.com
- DNS ASK pw####veiduwg.com
- DNS ASK oh#####iqvmaldifexr.com
- DNS ASK xy#####kiyljsyimbwy.com
- DNS ASK nv###jhhbmy.com
- DNS ASK xl###wpy.com
- DNS ASK wd#####ualkbapofta.com
- DNS ASK bb####wngdrw.com
- DNS ASK uj#####sbistbokq.com
- DNS ASK ge####wunfkxht.com
- DNS ASK sy####accqplk.com
- DNS ASK ot###ynobjj.com
- DNS ASK hw#####jokhwxuplfr.com
- DNS ASK dx#####delyjvdjlrij.com
- DNS ASK bing.com
- DNS ASK kp#####dhnhieswds.com
- DNS ASK dn#.##ftncsi.com
- DNS ASK lx#####lvufyvndmyy.com
- DNS ASK nn#####cfrulntvgq.com
- DNS ASK dq#####slaemuixxak.com
- DNS ASK jp#####afxjqvaga.com
- DNS ASK re####ihcxhjj.com
- DNS ASK google.com
- DNS ASK de###awup.com
- DNS ASK yx####qdqbinut.com
- DNS ASK ex###wmpaed.com
- DNS ASK xx####yvyfvirbp.com
- DNS ASK sy###mrbjvj.com
- DNS ASK su###qbos.com
- DNS ASK cn####hkocdbps.com
- DNS ASK ne####fbmkbvmf.com
- DNS ASK py#####nrcinuankpaa.com
- DNS ASK jh####wikxuuqh.com
- DNS ASK iv###axod.com
- DNS ASK iw####qhwchjkjd.com
- DNS ASK mb###ftevl.com
- DNS ASK aa#####tpewjjcxu.com
- DNS ASK kr#####rymwnkddomby.com
- DNS ASK en####mmosror.com
- DNS ASK ws###amk.com
- DNS ASK ig#####oluspcljm.com
- DNS ASK ya##o.com
- DNS ASK dg####uptldoiis.com
- DNS ASK uc####pcjspuoe.com
- DNS ASK tf####ljqmpeai.com
- DNS ASK cf####cdbeurv.com
- DNS ASK yv####ohnvdb.com
- DNS ASK gb###hgybo.com
- DNS ASK oo####qkkpbpcd.com
- DNS ASK bh####aalssy.com
- DNS ASK ea####wstvpc.com
- DNS ASK pf###juoph.com
- DNS ASK wn###idtgxt.com
- DNS ASK ta#####kemwisnkgxuc.com
- DNS ASK ho####noafxlrj.com
- DNS ASK hw####qwgtlkvgu.com
- 'localhost':56262
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: 'Indicator' WindowName: ''
