Content
Bredolab.gen
- Type
- Trojan
- SubType
- Generic
- Discovery Date
- 07/25/2009
- Length
- Minimum DAT
- 5688 (07/25/2009)
- Updated DAT
- 5806 (11/18/2009)
- Minimum Engine
- 5.3.00
- Description Added
- 07/25/2009
- Description Modified
- 09/01/2009 10:17 AM (PT)
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Characteristics
Upon execution Bredolab attempts to inject into svchost.exe processes and deletes the parent file. The Trojan then connects to the following domains davxxbrxdov.ru, hulxerxpedxxo.com, hoxtvexxss.ru, wapxxdoit.ru to download malwares such as Anti-spyware, Password stealers etc and executes it. The malware that is downloaded and related files may vary from one variant to another. Following are the possible locations and files created:
%System%\sdra64.exe
%System%\_scui.cpl
%System%\braviax.exe
%System%\wisdstr.exe
%System%\dllcache\figaro.sys
c:\Program Files\PC_Antispyware2010\AVEngn.dll
c:\Program Files\PC_Antispyware2010\htmlayout.dll
c:\Program Files\PC_Antispyware2010\PC_Antispyware2010.exe
c:\Program Files\PC_Antispyware2010\pthreadVC2.dll
c:\Program Files\PC_Antispyware2010\Uninstall.exe
c:\Program Files\PC_Antispyware2010\Microsoft.VC80.CRT\msvcm80.dll
c:\Program Files\PC_Antispyware2010\Microsoft.VC80.CRT\msvcp80.dll
c:\Program Files\PC_Antispyware2010\Microsoft.VC80.CRT\msvcr80.dll
Where %System%\ = C:\WINDOWS\system32
The following registry entries were made by Bredolab.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon "Userinit"
%System%\userinit.exe, %System%\sdra64.exe
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "braviax"
%System%\braviax.exe
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "braviax"
%System%\braviax.exe
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "PC Antispyware 2010"
C:\Program Files\PC_Antispyware2010\PC_Antispyware2010.exe /hide
HKEY_CURRENT_USER\Software\Microsoft\Security Center "AntiVirusDisableNotify" = "1"
HKEY_CURRENT_USER\Software\Microsoft\Security Center "FirewallDisableNotify" = "1"
HKEY_CURRENT_USER\Software\Microsoft\Security Center "UpdatesDisableNotify" = "1"
Symptoms
* The Trojan is running in the process list.* Presence of files and registry entries mentioned
* Network activities
Method of Infection
Trojans are not viruses, and as such do not contain any method to replicate by themselves. However they may be downloaded by other viruses and/or Trojans to be installed on the user's system. Alternatively they may be installed by visiting a malicious web page (either by clicking on a link, or by the website hosting a scripted exploit which installs the malwares).Removal
AVERT recommends to always use latest DATs and engine. This threat will be cleaned if you have this combination.
Variants
Variants
N/A
All Information
Overview -
This is a trojan detection. Unlike viruses, trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include email, malicious or hacked web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.
Aliases
- Backdoor.Win32.Bredolab.ou(Kaspersky)
- TROJ_BREDOLAB.J(TrendMicro)
- Trojan-Downloader.Win32.Bredolab(Ikarus)
- Trojan-Downloader:W32/Bredolab.ED(F-Secure)
- TrojanDropper:Win32/Oficla.A(Microsoft)
Characteristics
Characteristics -
Upon execution Bredolab attempts to inject into svchost.exe processes and deletes the parent file. The Trojan then connects to the following domains davxxbrxdov.ru, hulxerxpedxxo.com, hoxtvexxss.ru, wapxxdoit.ru to download malwares such as Anti-spyware, Password stealers etc and executes it. The malware that is downloaded and related files may vary from one variant to another. Following are the possible locations and files created:
%System%\sdra64.exe
%System%\_scui.cpl
%System%\braviax.exe
%System%\wisdstr.exe
%System%\dllcache\figaro.sys
c:\Program Files\PC_Antispyware2010\AVEngn.dll
c:\Program Files\PC_Antispyware2010\htmlayout.dll
c:\Program Files\PC_Antispyware2010\PC_Antispyware2010.exe
c:\Program Files\PC_Antispyware2010\pthreadVC2.dll
c:\Program Files\PC_Antispyware2010\Uninstall.exe
c:\Program Files\PC_Antispyware2010\Microsoft.VC80.CRT\msvcm80.dll
c:\Program Files\PC_Antispyware2010\Microsoft.VC80.CRT\msvcp80.dll
c:\Program Files\PC_Antispyware2010\Microsoft.VC80.CRT\msvcr80.dll
Where %System%\ = C:\WINDOWS\system32
The following registry entries were made by Bredolab.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon "Userinit"
%System%\userinit.exe, %System%\sdra64.exe
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "braviax"
%System%\braviax.exe
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "braviax"
%System%\braviax.exe
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "PC Antispyware 2010"
C:\Program Files\PC_Antispyware2010\PC_Antispyware2010.exe /hide
HKEY_CURRENT_USER\Software\Microsoft\Security Center "AntiVirusDisableNotify" = "1"
HKEY_CURRENT_USER\Software\Microsoft\Security Center "FirewallDisableNotify" = "1"
HKEY_CURRENT_USER\Software\Microsoft\Security Center "UpdatesDisableNotify" = "1"
Symptoms
Symptoms -
* The Trojan is running in the process list.* Presence of files and registry entries mentioned
* Network activities
Method of Infection
Method of Infection -
Trojans are not viruses, and as such do not contain any method to replicate by themselves. However they may be downloaded by other viruses and/or Trojans to be installed on the user's system. Alternatively they may be installed by visiting a malicious web page (either by clicking on a link, or by the website hosting a scripted exploit which installs the malwares).Removal -
Removal -
AVERT recommends to always use latest DATs and engine. This threat will be cleaned if you have this combination.
Additional Windows ME/XP removal considerations
Variants
Variants -
N/A
