Threat Description

Backdoor: W32/SdBot.CNJ

Details

Category: Malware
Type: Backdoor
Platform: W32
Aliases: Backdoor:W32/SdBot.CNJ, Trojan.Win32.Agent.asdj, W32.Ackantta@mm (Symantec), W32/Autorun-RI (Sophos), W32/Xirtem@MM (McAfee), VirTool:Win32/CeeInject.gen!K (Microsoft)

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 scanning & removal options

More information on scanning or removal options is available in the documentation for your F-Secure security product on the Downloads section of our Home - Global site.

You may also refer to the Knowledge Base on the F-Secure Community site for more information.

Contact Support

For further assistance, F-Secure customers can request support online via the Request support or the Chat forms on our Home - Global site.



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}





SUBMIT A SAMPLE

Suspect a file or URL was wrongly detected? Submit a sample to our Labs for analysis

Submit Now

Give And Get Advice

Give advice. Get advice. Share the knowledge on our free discussion forum.

Learn More