Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'jieum' = '%HOMEPATH%\jieum.exe /X'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'jieum' = '%HOMEPATH%\jieum.exe /L'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'jieum' = '%HOMEPATH%\jieum.exe /f'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'jieum' = '%HOMEPATH%\jieum.exe /T'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'jieum' = '%HOMEPATH%\jieum.exe /k'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'jieum' = '%HOMEPATH%\jieum.exe /s'
- [<HKLM>\SYSTEM\ControlSet001\Control\Print\Providers\3556816840] 'Name' = '"%TEMP%\2.tmp"'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'jieum' = '%HOMEPATH%\jieum.exe /b'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'jieum' = '%HOMEPATH%\jieum.exe /n'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'jieum' = '%HOMEPATH%\jieum.exe /D'
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>:\AOY.ico
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\jieum.exe
- <Drive name for removable media>:\New Folder.lnk
- <Drive name for removable media>:\jieumx.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%\wurbo.exe
- %HOMEPATH%\rentsvr.exe (downloaded from the Internet)
- %HOMEPATH%\jieum.exe
- %HOMEPATH%\bxstat.exe
- %HOMEPATH%\sgacPDc4D6eg.exe
- %HOMEPATH%\turbo.exe
Executes the following:
- <SYSTEM32>\tasklist.exe
Injects code into
the following system processes:
- <SYSTEM32>\spoolsv.exe
Modifies settings of Windows Internet Explorer:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1A10' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '{AEBA21FA-782A-4A90-978D-B72164C80120}' = ''
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '{A8A88C49-5EB2-4990-A1A2-0876022C854F}' = ''
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] 'currentlevel' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1601' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1400' = '00000000'
Modifies file system :
Creates the following files:
- %TEMP%\1.tmp
- %HOMEPATH%\jieum.exe
- %WINDIR%\Temp\3.tmp
- %HOMEPATH%\rentsvr.exe
- %HOMEPATH%\bxstat.dll
- %HOMEPATH%\sgacPDc4D6eg.exe
- %HOMEPATH%\bxstat.exe
- %HOMEPATH%\wurbo.exe
- %HOMEPATH%\turbo.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\jieum.exe
- <Drive name for removable media>:\jieumx.exe
- <Drive name for removable media>:\AOY.ico
- %HOMEPATH%\jieum.exe
- <Drive name for removable media>:\autorun.inf
Deletes the following files:
- %WINDIR%\Temp\3.tmp
- %HOMEPATH%\sgacPDc4D6eg.exe
- %TEMP%\2.tmp
- <DRIVERS>\etc\hosts
Deletes itself.
Network activity:
Connects to:
- 'go######pitalsources.com':80
TCP:
HTTP GET requests:
- go######pitalsources.com/xxx
UDP:
- DNS ASK go######pitalsources.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
- ClassName: 'Shell_TrayWnd' WindowName: ''
