Backdoor:Win32/Lybsus.B is a trojan that allows unauthorized access and control of an affected computer.
When executed, Backdoor:Win32/Lybsus.B copies itself to %windir%\config.exe.
The malware modifies the following registry entries to ensure that its copy executes at each Windows start:
Adds value: "winlogon" With data: "c:\windows\config.exe" To subkey: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
The malware creates the following files on an affected computer:
c:\documents and settings\administrator\application data\1.bat
Allows backdoor access and control
Backdoor:Win32/Lybsus.B allows unauthorized access and control of an affected computer. An attacker can perform any number of different actions on an affected computer using Backdoor:Win32/Lybsus.B. This could include, but is not limited to, the following actions:
Download and execute arbitrary files
Spread to other computers using various methods of propagation
Log keystrokes or steal sensitive data
Modify system settings
Run or terminate applications
This malware description was produced and published using our automated analysis system's examination of file SHA1 d652cb33b7f366ddf942dc1f1ac23697baaa52a6.