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Virus:TR/Agent.87552.9
Date discovered:05/01/2011
Type:Trojan
In the wild:No
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Medium
Static file:Yes
File size:87552 Bytes
MD5 checksum:410F4DAE19CC08591AE28E76A84A9C0F
IVDF version:7.11.01.29 - Wednesday, January 5, 2011

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Symantec: W32.Yimfoca
   •  Kaspersky: IM-Worm.Win32.Yahos.ij
   •  TrendMicro: WORM_IMBOT.ZT
   •  Microsoft: Worm:Win32/Slenfbot.AKD
   •  Panda: Trj/CI.A
   •  PCTools: Malware.Yimfoca
   •  Eset: Win32/Yimfoca.AA
   •  AhnLab: Win-Trojan/Buzus.87552.AY
   •  Norman: W32/Crypt.AUIY


Platforms / OS:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003
   • Windows Vista
   • Windows Server 2008
   • Windows 7


Side effects:
   • Drops files
   • Lowers security settings
   • Records keystrokes
   • Registry modification
   • Opens website in web browser

 Files It copies itself to the following location:
   • %WINDIR%\nvsvc32.exe



The following files are created:

– Non malicious files:
   • %WINDIR%\ndl.dl
   • %WINDIR%\wiybr.png
   • %WINDIR%\wibrf.jpg

 Registry The following registry keys are added in order to run the processes after reboot:

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "NVIDIA driver monitor"="%WINDIR%\\nvsvc32.exe"

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "NVIDIA driver monitor"="%WINDIR%\\nvsvc32.exe"

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Terminal Server\
   Install\Software\Microsoft\Windows\CurrentVersion\Run]
   • "NVIDIA driver monitor"="%WINDIR%\\nvsvc32.exe"



The following registry key is changed:

Lower security settings from Internet Explorer:

– [HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings]
   Old value:
   • "MigrateProxy"=%user defined settings%
   • "ProxyEnable"=%user defined settings%
   • "ProxyServer"=%user defined settings%
   • "ProxyOverride"=%user defined settings%
   • "AutoConfigURL"=%user defined settings%
   New value:
   • "MigrateProxy"=dword:00000001
   • "ProxyEnable"=dword:00000000
   • "ProxyServer"=-
   • "ProxyOverride"=-
   • "AutoConfigURL"=-

Lower security settings from Internet Explorer:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\
   ZoneMap]
   Old value:
   • "ProxyBypass"=%user defined settings%
   • "IntranetName"=%user defined settings%
   • "UNCAsIntranet"=%user defined settings%
   New value:
   • "ProxyBypass"=dword:00000001
   • "IntranetName"=dword:00000001
   • "UNCAsIntranet"=dword:00000001

Lower security settings from Internet Explorer:

– [HKEY_CURRENT_CONFIG\Software\Microsoft\windows\CurrentVersion\
   Internet Settings]
   Old value:
   • "ProxyEnable"=%user defined settings%
   New value:
   • "ProxyEnable"=dword:00000000

– [HKCR\TypeLib\{1EA4DBF0-3C3B-11CF-810C-00AA00389B71}\1.1\0\win32]
   New value:
   • "(Default)"="oleacc.dll"

 IRC To deliver system information and to provide remote control it connects to the following IRC Server:

Server: 205.234.145.**********
Port: 1234
Channel: !nn! te**********
Nickname: NEW-[GBR|00|P|**********

 Miscellaneous Internet connection:
In order to check for its internet connection the following DNS servers are contacted:
   • astro.ic.ac.**********
   • ale.pakibili.**********
   • versatek.**********
   • journalofaccountancy.**********
   • transnationale.**********
   • mas.0730ip.**********
   • api.albertoshistory.**********
   • browseusers.myspace.**********
   • www.myspace.**********
   • www.facebook.**********
   • x.myspacecdn.**********
   • stayontime.**********
   • www.shearman.**********
   • insidehighered.**********
   • ate.lacoctelera.**********
   • websitetrafficspy.**********
   • qun.51.**********
   • summer-uni-sw.eesp.**********
   • shopstyle.**********
   • xxx.stopklatka.**********
Accesses internet resources:
   • http://browseusers.myspace.**********/Browse/Browse.aspx;
      http://www.myspace.**********/browse/people;
      http://www.myspace.**********/help/browserunsupported;
      http://www.facebook.**********/home.php;
      http://www.facebook.**********/login.php;
      http://x.myspacecdn.**********/modules/splash/static/img/cornersSheet.png;
      http://x.myspacecdn.**********/images/BrowserUpgrade/bg_infobox.jpg;
      http://x.myspacecdn.**********/images/BrowserUpgrade/icon_information.gif;
      http://x.myspacecdn.**********/images/BrowserUpgrade/bg_browserSection.jpg;
      http://x.myspacecdn.**********/images/BrowserUpgrade/browserLogos_med.jpg;
      http://174.37.200.**********/index.php

 File details Compilation date:
Date: 04/01/2011
Time: 12:12:02

Description inserted by Alexander Bauer on Friday, January 7, 2011
Description updated by Alexander Bauer on Friday, January 7, 2011

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