Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Local Security Authority Subsystem Service' = '"%APPDATA%\Microsoft\Windows\lsass.exe" -start'
Modifies file system
Creates the following files
- %TEMP%\b3aa6d24.buran
- %APPDATA%\microsoft\windows\lsass.exe
Deletes the following files
- %TEMP%\b3aa6d24.buran
Network activity
UDP
- DNS ASK ge###tool.com
Miscellaneous
Creates and executes the following
- '<SYSTEM32>\cmd.exe' /e:on /c md "%APPDATA%\Microsoft\Windows" & copy "<Full path to file>" "%APPDATA%\Microsoft\Windows\lsass.exe" & reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /V "Local Security ...' (with hidden window)
Executes the following
- '<SYSTEM32>\cmd.exe' /e:on /c md "%APPDATA%\Microsoft\Windows" & copy "<Full path to file>" "%APPDATA%\Microsoft\Windows\lsass.exe" & reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /V "Local Security ...
- '<SYSTEM32>\reg.exe' add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /V "Local Security Authority Subsystem Service" /t REG_SZ /F /D "\"%APPDATA%\Microsoft\Windows\lsass.exe\" -start"
