Technical Information
To ensure autorun and distribution
Sets the following service settings
- [<HKLM>\System\CurrentControlSet\Services\gkcxzaxzatn.eqg] 'Start' = '00000002'
- [<HKLM>\System\CurrentControlSet\Services\gkcxzaxzatn.eqg] 'ImagePath' = '%WINDIR%\SysWOW64\regsvr32.exe /s "%WINDIR%\SysWOW64\Cudcxiwtvml\gkcxzaxzatn.eqg"'
- [<HKLM>\System\CurrentControlSet\Services\iiwkdmkuciy.xfn] 'Start' = '00000002'
- [<HKLM>\System\CurrentControlSet\Services\iiwkdmkuciy.xfn] 'ImagePath' = '%WINDIR%\SysWOW64\regsvr32.exe /s "%WINDIR%\SysWOW64\Apdzwwtrtv\iiwkdmkuciy.xfn"'
Creates the following services
- 'gkcxzaxzatn.eqg' %WINDIR%\SysWOW64\regsvr32.exe /s "%WINDIR%\SysWOW64\Cudcxiwtvml\gkcxzaxzatn.eqg"
- 'iiwkdmkuciy.xfn' %WINDIR%\SysWOW64\regsvr32.exe /s "%WINDIR%\SysWOW64\Apdzwwtrtv\iiwkdmkuciy.xfn"
Malicious functions
Executes the following (exploit)
- '%WINDIR%\syswow64\regsvr32.exe' -s ..\nhth.dll
Modifies file system
Creates the following files
- %HOMEPATH%\nhth.dll
- <Current directory>\cbd31000
Moves the following files
- from %HOMEPATH%\nhth.dll to %WINDIR%\syswow64\cudcxiwtvml\gkcxzaxzatn.eqg
- from %HOMEPATH%\nhth.dll to %WINDIR%\syswow64\apdzwwtrtv\iiwkdmkuciy.xfn
Substitutes the following files
- %HOMEPATH%\nhth.dll
- <PATH_SAMPLE>.xls
Network activity
Connects to
- 'fc###insaat.com':80
- '15#.#5.88.10':8080
- '5.#.116.246':8080
- '82.##5.152.127':8080
- '19#.#42.150.244':8080
- '21#.#4.98.99':8080
- '18#.#.212.130':7080
- '20#.#26.98.206':8080
- '1.##4.2.232':8080
- '51.##4.140.238':7080
- '50.##.40.196':8080
- '18#.#4.20.25':443
- '10#.50.0.91':8080
- '16#.#72.253.162':8080
- '18#.#57.82.211':8080
- '16#.#9.115.35':8080
- '11#.#93.124.41':7080
- '10#.#32.242.26':8080
- '18#.#11.227.137':8080
- '45.##8.115.99':8080
- '13#.#22.66.193':8080
- 'fr####nylaluz.com':80
- 'fu####.youchien.net':80
- '10#.#31.11.205':443
- '13#.#97.109.175':8080
- '18#.#4.80.182':443
- '79.##3.187.147':443
- '18#.#32.46.161':443
- 'fa#####swebdesign.net':80
- '51.#1.76.89':8080
- '20#.#89.28.199':8080
- '45.##6.232.124':443
- '10#.#82.225.142':8080
- '72.##.201.15':8080
- '20#.#50.246.206':443
- '16#.68.99.3':8080
- '16#.#6.142.56':8080
- '10#.#3.46.182':443
- '19#.#18.30.83':443
- '21#.#58.226.206':443
TCP
HTTP GET requests
- http://fc###insaat.com/wp-content/Cw3aR6792f/
- http://fa#####swebdesign.net/invoice/m/
- http://fr####nylaluz.com/downloads/8dR9pgNBFtz/
- http://fu####.youchien.net/wp-content/sSJqJ/
Other
- '10#.#31.11.205':443
- '13#.#97.109.175':8080
- '18#.#4.80.182':443
- '79.##3.187.147':443
- '51.#1.76.89':8080
- '20#.#26.98.206':8080
- '51.##4.140.238':7080
- '11#.#93.124.41':7080
- '50.##.40.196':8080
UDP
- DNS ASK fc###insaat.com
- DNS ASK fa#####swebdesign.net
- DNS ASK fr####nylaluz.com
- DNS ASK fr######itedirectory.com
- DNS ASK fu####.youchien.net
Miscellaneous
Creates and executes the following
- '%WINDIR%\syswow64\regsvr32.exe' -s ..\nhth.dll' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\regsvr32.exe' /s "%WINDIR%\SysWOW64\Cudcxiwtvml\gkcxzaxzatn.eqg"
- '%WINDIR%\syswow64\regsvr32.exe' /s "%WINDIR%\SysWOW64\Apdzwwtrtv\iiwkdmkuciy.xfn"
