Threat Description

Backdoor:​W32/SdBot.CNJ

Details

Aliases:Backdoor:​W32/SdBot.CNJ, Trojan.Win32.Agent.asdj
Category:Malware
Type:Backdoor
Platform:W32

Summary



Backdoor:W32/SdBot.CNJ is a piece of malicious software that tries to disable various firewalls and antivirus programs, steal passwords from the infected machine and spread through removable media devices.



Removal


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More

You may wish to refer to the Support Community for further assistance. You also may also refer to General Removal Instructions for a general guide on alternative disinfection actions.



Technical Details



Process Changes

Creates these processes:

  • %cwd%\[filename].exe
  • %programfiles%\Internet
  • Explorer\IEXPLORE.EXE/[filename]

Creates these mutexes:

  • Y_aKS~pXq1MKTN4PE

Network Connections

Attempts to connect with HTTP to:

  • Web1.(censored)[removed].org:443/TCP

Registry Modifications

Sets these values:

  • HKCU\Software\Microsoft\Windows NT\CurrentVersion (default) = h1Ucm{yQvor}^imlol|Pxhc|en isl
  • HKCU\Software\Microsoft\Windows\CurrentVersion\Run QnX = c:\(path)\[filename].(filename)exe
  • HKLM\SOFTWARE\Microsoft\Active Setup\Installed
  • Components\{77520Q86-864L-N81R-0R2W-7U2G0P22436U} StubPath = "c:\(path)\.(filename)exe"
  • HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run QnX =c:\(path)\.(filename)exe

Creates these keys:

  • HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\{77520Q86-864L-N81R-0R2W-7U2G0P22436U}





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