Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /E'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /j'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /D'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /s'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /v'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /b'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /X'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /M'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /P'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /u'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /N'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /Q'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /F'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /Z'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /H'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /k'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /a'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /t'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /o'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /I'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /c'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /y'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /R'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /G'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /W'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yeunu' = '%HOMEPATH%\yeunu.exe /l'
Creates the following files on removable media:
- <Drive name for removable media>:\Documents.lnk
- <Drive name for removable media>:\Passwords.lnk
- <Drive name for removable media>:\Pictures.lnk
- <Drive name for removable media>:\Video.lnk
- <Drive name for removable media>:\Music.lnk
- <Drive name for removable media>:\SmS.ico
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\yeunu.exe
- <Drive name for removable media>:\New Folder.lnk
- <Drive name for removable media>:\yeunux.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Creates and executes the following:
- '%HOMEPATH%\iggy1.exe'
- '%HOMEPATH%\yeunu.exe'
- '%HOMEPATH%\HAJdmVhp.exe'
Executes the following:
- '<SYSTEM32>\tasklist.exe'
Modifies file system :
Creates the following files:
- %HOMEPATH%\iggy3.exe
- %HOMEPATH%\yeunu.exe
- %HOMEPATH%\iggy2.exe
- %HOMEPATH%\HAJdmVhp.exe
- %HOMEPATH%\iggy1.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\yeunu.exe
- <Drive name for removable media>:\yeunux.exe
- <Drive name for removable media>:\SmS.ico
- %HOMEPATH%\yeunu.exe
- <Drive name for removable media>:\autorun.inf
Deletes the following files:
- %HOMEPATH%\HAJdmVhp.exe
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
