Analisado por: Oscar Celestino Angelo Abendan ll   
 

Delf, Emerleox, Logsnif, Graybird, Pcclient

 Plataforma:

Windows 2000, Windows XP, Windows Server 2003

 Classificao do risco total:
 Potencial de dano:
 Potencial de distribuição:
 infecção relatada:
Baixo
Medium
Alto
Crítico

  • Tipo de grayware:
    Backdoor

  • Destrutivo:
    Não

  • Criptografado:
     

  • In the Wild:
    Sim

  Visão geral

Canal de infecção: Aus dem Internet heruntergeladen, Fallen gelassen von anderer Malware


  Detalhes técnicos

Residente na memória: Sim
Carga útil: Connects to URLs/IPs

Installation

Schleust die folgenden Dateien ein:

  • %System%\IEXPL0RER.bat
  • %System%\pchsvc.dll
  • %System%\Sysclt.dll
  • %System%\Systen.dll
  • %Windows%\{random}.dat
  • %Windows%\{random}.dll

(Hinweis: %System% ist der Windows Systemordner. Er lautet in der Regel C:\Windows\System unter Windows 98 und ME, C:\WINNT\System32 unter Windows NT und 2000 sowie C:\Windows\System32 unter Windows XP und Server 2003.. %Windows% ist der Windows Ordner, normalerweise C:\Windows oder C:\WINNT.)

Schleust die folgenden Eigenkopien in das betroffene System ein:

  • %System%\pchsvc.dll
  • %Program Files%\Common Files\Microsoft Shared\MSInfo\Stemp.exe
  • %System%\IEXPL0RER.EXE
  • %Windows%\Hacker.com.cn.ini

Andere Systemänderungen

Fügt die folgenden Registrierungseinträge hinzu:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon\
Notify\BITS
Asynchronous = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon\
Notify\BITS
Impersonate = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon\
Notify\BITS
DllName = "%System%\Systen.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon\
Notify\BITS
Startup = "ServiceMain"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\AuthorizedApplications\
List
%System%\winlogon.exe = "%System%\winlogon.exe:*:Enabled:Thunder"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon\
Notify\TrkWks
Asynchronous = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon\
Notify\TrkWks
Impersonate = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon\
Notify\TrkWks
DllName = "%System%\Sysclt.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon\
Notify\TrkWks
Startup = "ServiceMain"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\NTDISK Driver Extension
ImagePath = ""%System%\IEXPL0RER.EXE " /service"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\NTDISK Driver Extension
Type = "110"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\NTDISK Driver Extension
Start = "2"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\NTDISK Driver Extension
ErrorControl = "0"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\NTDISK Driver Extension
DisplayName = "NTDISK Instrumentation Driver Extensions"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\NTDISK Driver Extension
ObjectName = "LocalSystem"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\NTDISK Driver Extension
Description = "BlackHole Remote Control Service"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Oogical Kisk Manager Administrative Service
ImagePath = "%Program Files%\Common Files\Microsoft Shared\MSInfo\Stemp.exe"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Oogical Kisk Manager Administrative Service
Type = "110"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Oogical Kisk Manager Administrative Service
Start = "2"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Oogical Kisk Manager Administrative Service
ErrorControl = "0"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Oogical Kisk Manager Administrative Service
DisplayName = "Oogical Kisk Manager Administrative Service"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Oogical Kisk Manager Administrative Service
ObjectName = "LocalSystem"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Windows XP Vista
ImagePath = "%Windows%\Hacker.com.cn.ini"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Windows XP Vista
Type = "110"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Windows XP Vista
Start = "2"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Windows XP Vista
ErrorControl = "0"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Windows XP Vista
DisplayName = "Windows XP Vista"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Windows XP Vista
ObjectName = "LocalSystem"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\helpsvc\Parameters
ServiceMain = "ServiceMain"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\AuthorizedApplications\
List
%System%\svchost.exe = "%System%\svchost.exe:*:Enabled:Thunder"

Fügt die folgenden Registrierungsschlüssel als Teil der Installationsroutine hinzu:

HKEY_LOCAL_MACHINE\SOFTWARE\Tencent\
QQ

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon\
Notify\BITS

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon\
Notify\TrkWks

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\NTDISK Driver Extension

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Oogical Kisk Manager Administrative Service

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Windows XP Vista

Ändert die folgenden Registrierungseinträge:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\helpsvc\Parameters
ServiceDll = "%System%\pchsvc.dll"

(Note: The default value data of the said registry entry is %Windows%\PCHealth\HelpCtr\Binaries\pchsvc.dll.)