Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /N'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /g'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /h'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /r'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /E'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /f'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /S'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /M'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /W'
- [<HKLM>\SYSTEM\ControlSet001\Control\Print\Providers\612845112] 'Name' = '"%TEMP%\3.tmp"'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /J'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /T'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.exe /x'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pexig' = '%HOMEPATH%\pexig.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>:\bXY.ico
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\pexig.exe
- <Drive name for removable media>:\New Folder.lnk
- <Drive name for removable media>:\pexigx.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%\zupnat.exe
- %HOMEPATH%\pexig.exe
- %HOMEPATH%\zb.exe
- %HOMEPATH%\z57NKbOO86bDWSl3O4.exe
- %HOMEPATH%\za.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] '1400' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1601' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] 'currentlevel' = '00000000'
Modifies file system :
Creates the following files:
- %HOMEPATH%\pexig.exe
- %TEMP%\2.tmp
- %TEMP%\Rlb..bat
- %WINDIR%\Temp\4.tmp
- %HOMEPATH%\za.exe
- %HOMEPATH%\z57NKbOO86bDWSl3O4.exe
- %HOMEPATH%\zupnat.exe
- %HOMEPATH%\zb.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\pexig.exe
- <Drive name for removable media>:\pexigx.exe
- <Drive name for removable media>:\bXY.ico
- %HOMEPATH%\pexig.exe
- <Drive name for removable media>:\autorun.inf
Deletes the following files:
- %HOMEPATH%\z57NKbOO86bDWSl3O4.exe
- %HOMEPATH%\zb.exe
- %WINDIR%\Temp\4.tmp
- %TEMP%\3.tmp
- <DRIVERS>\etc\hosts
Network activity:
Connects to:
- 'ri##rose.in':80
- 'ap#.#ostip.info':80
- '74.##5.232.51':80
TCP:
HTTP GET requests:
- ap#.#ostip.info/country.php
- 74.##5.232.51/
HTTP POST requests:
- ri##rose.in/90ds8c9ds8c9d0s8cds.php?in##############################################################################################################
UDP:
- DNS ASK da##.net
- DNS ASK ap#.#ostip.info
- DNS ASK ri##rose.in
- DNS ASK ti##pic.com
- DNS ASK ma##h.com
- DNS ASK google.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
- ClassName: 'MS_WebcheckMonitor' WindowName: ''
- ClassName: 'MS_AutodialMonitor' WindowName: ''
