Backdoor:W32/SdBot.CNJ

Classification

Malware

Backdoor

W32

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

Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:

Check for the latest database updates

First check if your F-Secure security program is using the latest updates, then try scanning the file again.
Submit a sample

After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.

Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning

If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.

Note: You need administrative rights to change the settings.

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}

More Support

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