Technical Information
To ensure autorun and distribution
Sets the following service settings
- [<HKLM>\System\CurrentControlSet\Services\HShctLZ.dll] 'Start' = '00000002'
- [<HKLM>\System\CurrentControlSet\Services\HShctLZ.dll] 'ImagePath' = '<SYSTEM32>\regsvr32.exe "<SYSTEM32>\TBWEXBotfWZ\HShctLZ.dll"'
Creates the following services
- 'HShctLZ.dll' <SYSTEM32>\regsvr32.exe "<SYSTEM32>\TBWEXBotfWZ\HShctLZ.dll"
Malicious functions
Executes the following (exploit)
- '<SYSTEM32>\regsvr32.exe' /S ..\uoya1.ocx
- '<SYSTEM32>\regsvr32.exe' /S ..\uoya2.ocx
- '<SYSTEM32>\regsvr32.exe' /S ..\uoya3.ocx
- '<SYSTEM32>\regsvr32.exe' /S ..\uoya4.ocx
Modifies file system
Creates the following files
- %HOMEPATH%\uoya4.ocx
- <Current directory>\e1af0000
Moves the following files
- from %HOMEPATH%\uoya4.ocx to <SYSTEM32>\tbwexbotfwz\hshctlz.dll
Substitutes the following files
- <PATH_SAMPLE>.xls
Network activity
Connects to
- 'f5##ans.com':443
- '21#.#4.98.99':8080
- '13#.#22.66.193':8080
- '45.##8.115.99':8080
- '18#.#.135.165':8080
- '10#.#5.201.2':443
- '51.#1.76.89':8080
- '15#.#9.202.34':443
- '18#.#4.20.25':443
- '45.#35.8.30':8080
- '16#.#4.196.120':8080
- '20#.#7.163.214':443
- '51.##4.140.238':7080
- '14#.#39.166.154':8080
- '21#.#41.20.155':443
- '15#.#5.66.124':8080
- '37.##7.115.122':8080
- '64.##7.100.222':8080
- '20#.#26.98.206':8080
- '15#.#26.146.25':7080
- '20#.#89.28.199':8080
- '18#.#11.227.137':8080
- 'em##t.com':80
- 'du###and-s.nl':443
- 'ga#####concursos.com.br':80
- '16#.#0.222.65':443
- '14#.#02.108.116':8080
- '10#.#68.155.143':8080
- '21#.#39.212.5':443
- '17#.#05.226.75':8080
- '14#.#6.131.28':8080
- '19#.#18.30.83':443
- '20#.#48.79.14':8080
- '10#.#70.39.149':8080
- '13#.#00.24.231':80
- '11#.#8.227.76':8080
- '15#.#06.112.196':8080
- '51.##1.73.194':443
- '15#.#9.222.101':443
- '19#.#42.150.244':8080
- '15#.#5.140.115':443
TCP
HTTP GET requests
- http://em##t.com/images/kk2l4zoRKwv2vIEK/
- http://ga#####concursos.com.br/wp-admin/Pt8VGg/
Other
- 'f5##ans.com':443
- '15#.#9.202.34':443
- '51.#1.76.89':8080
- '10#.#5.201.2':443
- '20#.#26.98.206':8080
- '15#.#9.222.101':443
- '51.##1.73.194':443
- '51.##4.140.238':7080
- '13#.#00.24.231':80
- '17#.#05.226.75':8080
- '21#.#39.212.5':443
- '10#.#68.155.143':8080
- '14#.#02.108.116':8080
- '16#.#0.222.65':443
- 'du###and-s.nl':443
- '14#.#6.131.28':8080
- '15#.#5.66.124':8080
UDP
- DNS ASK f5##ans.com
- DNS ASK em##t.com
- DNS ASK du###and-s.nl
- DNS ASK ga#####concursos.com.br
Miscellaneous
Creates and executes the following
- '<SYSTEM32>\regsvr32.exe' /S ..\uoya1.ocx' (with hidden window)
- '<SYSTEM32>\regsvr32.exe' /S ..\uoya2.ocx' (with hidden window)
- '<SYSTEM32>\regsvr32.exe' /S ..\uoya3.ocx' (with hidden window)
- '<SYSTEM32>\regsvr32.exe' /S ..\uoya4.ocx' (with hidden window)
Executes the following
- '<SYSTEM32>\regsvr32.exe' "<SYSTEM32>\TBWEXBotfWZ\HShctLZ.dll"
