Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\RWLN] 'Startup' = 'WLEventStartup'
- [<HKLM>\SOFTWARE\Classes\mprf\shell\open\command] '' = '%TEMP%\MPR.exe "%1"'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\RWLN] 'DllName' = 'RWLN.dll'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\RWLN] 'Logon' = 'WLEventLogon'
Creates the following services:
- [<HKLM>\SYSTEM\ControlSet001\Services\RManService] 'Start' = '00000002'
Malicious functions:
Creates and executes the following:
- '<SYSTEM32>\catroot3\rfusclient.exe' /tray
- '%TEMP%\MPR.exe' /export
- '%TEMP%\realip.exe'
- '<SYSTEM32>\catroot3\rutserv.exe'
- '<SYSTEM32>\catroot3\rutserv.exe' /silentinstall
- '<SYSTEM32>\catroot3\rutserv.exe' /firewall
- '<SYSTEM32>\catroot3\rutserv.exe' /start
Executes the following:
- '<SYSTEM32>\attrib.exe' -s -h -r "<SYSTEM32>\r_server.exe"
- '<SYSTEM32>\attrib.exe' -s -h "%WINDIR%\SysWOW64\rserver30"
- '<SYSTEM32>\attrib.exe' -s -h -r "%WINDIR%\SysWOW64\r_server.exe"
- '<SYSTEM32>\net1.exe' stop Telnet
- '<SYSTEM32>\net.exe' stop Telnet
- '<SYSTEM32>\taskkill.exe' /f /im cam_server.exe
- '<SYSTEM32>\taskkill.exe' /f /im r_server.exe
- '<SYSTEM32>\attrib.exe' -s -h -r "<SYSTEM32>\cam_server.exe"
- '<SYSTEM32>\attrib.exe' -s -h "<SYSTEM32>\rserver30"
- '<SYSTEM32>\attrib.exe' -s -h -r "%WINDIR%\SysWOW64\cam_server.exe"
- '<SYSTEM32>\sc.exe' config tlntsvr start= disabled
- '<SYSTEM32>\reg.exe' delete "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList" /v HelpAssistant /f
- '<SYSTEM32>\reg.exe' delete HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run /v "Service Host Controller" /f
- '<SYSTEM32>\reg.exe' delete "HKLM\Software\Microsoft\Windows\CurrentVersion\Run" /v "cam_server.exe" /f
- '%WINDIR%\regedit.exe' /s set.reg
- '<SYSTEM32>\reg.exe' delete "HKLM\System\CurrentControlSet\Services\RServer3" /f
- '<SYSTEM32>\net1.exe' stop "Service Host Controller"
- '<SYSTEM32>\net.exe' stop "Service Host Controller"
- '<SYSTEM32>\net1.exe' user HelpAssistant /delete
- '<SYSTEM32>\reg.exe' delete HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run /v "Операционная система Microsoft Windows" /f
- '<SYSTEM32>\schtasks.exe' /delete /tn security /f
- '<SYSTEM32>\attrib.exe' +s +h "<SYSTEM32>\catroot3"
- '<SYSTEM32>\reg.exe' delete "HKLM\SYSTEM\Remote Manipulator System" /f
- '<SYSTEM32>\attrib.exe' +s +h +r "%TEMP%\blat.dll"
- '<SYSTEM32>\attrib.exe' +s +h +r "%TEMP%\block_reader.sys"
- '<SYSTEM32>\attrib.exe' +s +h +r "%TEMP%\blat.lib"
- '<SYSTEM32>\cmd.exe' /c ""%TEMP%\install.bat" "
- '<SYSTEM32>\wscript.exe' "%TEMP%\stop.js"
- '<SYSTEM32>\taskkill.exe' /f /im RManServer.exe
- '<SYSTEM32>\taskkill.exe' /f /im rutserv.exe
- '<SYSTEM32>\cmd.exe' /c ""%TEMP%\7ZSfx000.cmd" "
- '<SYSTEM32>\attrib.exe' +s +h +r "%TEMP%\HookLib.dll"
- '<SYSTEM32>\attrib.exe' +s +h +r "<SYSTEM32>\de.exe"
- '<SYSTEM32>\attrib.exe' +s +h +r "%TEMP%\install.bat"
- '<SYSTEM32>\net.exe' stop rserver3
- '<SYSTEM32>\taskkill.exe' /f /im rserver3.exe
- '<SYSTEM32>\net1.exe' stop rserver3
- '<SYSTEM32>\attrib.exe' +s +h +r "%TEMP%\mpr.exe"
- '<SYSTEM32>\attrib.exe' +s +h +r "%TEMP%\blat.exe"
- '<SYSTEM32>\attrib.exe' +s +h +r "%TEMP%\realip.exe"
- '<SYSTEM32>\attrib.exe' +s +h +r "%TEMP%\stop.js"
- '<SYSTEM32>\attrib.exe' +s +h +r "%TEMP%\mpr.ini"
Modifies file system :
Creates the following files:
- %TEMP%\vp8encoder.dll
- %TEMP%\vp8decoder.dll
- %TEMP%\7ZSfx000.cmd
- %TEMP%\block_reader.sys
- %TEMP%\msvcr90.dll
- %TEMP%\msvcp90.dll
- %TEMP%\RWLN.dll
- %TEMP%\RIPCServer.dll
- <SYSTEM32>\de.exe
- <SYSTEM32>\catroot3\set.reg
- <SYSTEM32>\catroot3\RWLN.dll
- %TEMP%\SAV_CRNJEUFU_12.23.2013_4-58-33_PM.mpf
- <SYSTEM32>\RWLN.dll
- <SYSTEM32>\catroot3\rfusclient.exe
- <SYSTEM32>\catroot3\dsfVorbisEncoder.dll
- <SYSTEM32>\catroot3\rutserv.exe
- <SYSTEM32>\catroot3\RIPCServer.dll
- %TEMP%\install.bat
- %TEMP%\stop.js
- %TEMP%\de.exe
- %TEMP%\blat.exe
- %TEMP%\set.reg
- %TEMP%\Microsoft.VC90.CRT.manifest
- %TEMP%\blat.lib
- %TEMP%\mpr.ini
- %TEMP%\MPR.exe
- %TEMP%\dsfVorbisEncoder.dll
- %TEMP%\dsfVorbisDecoder.dll
- %TEMP%\HookLib.dll
- %TEMP%\gdiplus.dll
- %TEMP%\rfusclient.exe
- %TEMP%\realip.exe
- %TEMP%\blat.dll
- %TEMP%\rutserv.exe
Sets the 'hidden' attribute to the following files:
- %TEMP%\realip.exe
- %TEMP%\MPR.exe
- %TEMP%\mpr.ini
- <SYSTEM32>\de.exe
- %TEMP%\install.bat
- %TEMP%\blat.lib
- %TEMP%\blat.dll
- %TEMP%\block_reader.sys
- %TEMP%\blat.exe
- %TEMP%\HookLib.dll
Deletes the following files:
- %TEMP%\rutserv.exe
- %TEMP%\RIPCServer.dll
- %TEMP%\RWLN.dll
- <SYSTEM32>\catroot3\set.reg
- %TEMP%\set.reg
- %TEMP%\7ZSfx000.cmd
- %TEMP%\stop.js
- %TEMP%\de.exe
- %TEMP%\rfusclient.exe
- %TEMP%\dsfVorbisEncoder.dll
Deletes itself.
Network activity:
Connects to:
- 'www.la###search.com':80
- 'rm#####ver.tektonit.ru':563
- 'rm#####ver.tektonit.ru':5655
TCP:
HTTP GET requests:
- www.la###search.com/getip.php?la######
UDP:
- DNS ASK www.la###search.com
- DNS ASK rm#####ver.tektonit.ru
Miscellaneous:
Searches for the following windows:
- ClassName: 'MS_AutodialMonitor' WindowName: '(null)'
- ClassName: 'MS_WebcheckMonitor' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
- ClassName: '(null)' WindowName: '(null)'
- ClassName: 'RegEdit_RegEdit' WindowName: '(null)'
- ClassName: 'TMainMPRForm' WindowName: '(null)'
