TROJ_WMINE.A

This Trojan may arrive bundled with malware packages as a malware component. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It executes the dropped file(s). As a result, malicious routines of the dropped files are exhibited on the affected system.

It connects to certain websites to send and receive information. It gathers information and reports it to its servers.

Arrival Details

This Trojan may arrive bundled with malware packages as a malware component.

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Trojan creates the following folders:

• %Windows%\SpeechsTracing

(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)

It adds the following mutexes to ensure that only one of its copies runs at any one time:

• {E2088B81F-2A96-43E8-B9F522B}
• {E2077B81F-2A96-43E8-B9F522B}
• {E2066B81F-2A96-43E8-B9F522B}
• {E2044B81F-2A96-43E8-B9F522B}
• {5EC0AC33D-E23D-C8A2-A92C833}
• {CI59C45E-F19A-Z07C-565B17CO}
• {6B2089804-F412-CB72-7C027E6}
• {3EC1AC33D-E55D-C8A2-A92C822}
• {N33821F9E-F215-34AA-721269D}
• {F86E2D648-EF7B-6054-D43FC41}

Dropping Routine

This Trojan drops the following files:

• %System%\TasksHostServices.exe - coinminer component, obtained from the file %System%\EnrollCertXaml.dll
• %Windows%\SpeechsTracing\spoolsv.exe - component used for propagation, obtained from the file %System%\EnrollCertXaml.dll
• %System%\SmssServices.exe - coinminer component, obtained from the file %System%\EnrollCertXaml.dll
• %System%\WMASTrace.ini

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)

It executes the dropped file. As a result, malicious routines of the dropped file are exhibited on the affected system.

Download Routine

This Trojan connects to the following URL(s) to download its component file(s):

• http://{domain name}/modules.dat
• http://{domain name}/resource

Other Details

This Trojan connects to the following website to send and receive information:

• http://{domain name}/jumping.php?mac={mac address}&ip={ip address}&host={computer name}&tick={value}&os={os version}&cpu={cpu}&gpu={gpu}
• http://{domain name}/found.php?mac={mac address}&ip={ip address}&host={computer name}&tick={value}&os={os version}&cpu={cpu}&{string}
• {domain name}:8080

It requires the following additional components to properly run:

• %System%\EnrollCertXaml.dll - configuration file, may contain the following data:
  • C&C URLs including {domain name}
  • Coinminer files and arguments
  • Files required for Eternalblue-Doublepulsar exploit

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

It does the following:

• It can receive a command in the server that downloads and executes an arbitrary file saved as %User Temp%\tmp{random}.{exe/tmp}
• It stops and deletes the following services:
  • vmichapagentsrv
  • MaintenancesServices
  • tpmagentservice
• Deletes common coinminer files:
  • %Windows%\IME\Microsoft\Svchost.exe
  • %Windows%\IME\Microsoft\Spoolsv.exe
  • %Windows%\IME\Crypt\Svchost.exe
  • %Windows%\IME\Crypt\Spoolsv.exe
  • %Windows%\IME\Daps\Svchost.exe
  • %Windows%\System32\SysprepThemes\spoolsv.exe
  • %Windows%\SysprepThemes\Microsoft\svchost.exe
  • %Windows%\SysprepThemes\Microsoft\spoolsv.exe
  • %Windows%\System32\SecureBootThemes\spoolsv.exe
  • %Windows%\SecureBootThemes\Microsoft\svchost.exe
  • %Windows%\SecureBootThemes\Microsoft\spoolsv.exe
  • %Windows%\System32\SecUpdateHost.exe
  • %Windows%\System32\ServicesHost.exe
  • %Windows%\System32\WUDHostServices.exe
  • %Windows%\System32\TrustedHostServices.exe
  • %System%\vmichapagentsrv.dll
  • %System%\MaintenancesServices.dll
  • %System%\tpmagentservice.dll
  • %System%\settings7283.dat
  • %System%\dnsclientprovider_userdata.mof
  • %System%\D0T73Z
  • %System%\NrsDataCache.tlb
  • %System%\ProximityUntilCache32.tlb
  • %System%\MsraReportDataCache32.tlb
• It terminates the following process:
  • taskmgr.exe
• It executes the following commands:
  • schtasks.exe /End /TN "\Microsoft\Windows\UPnP\Services"
  • schtasks.exe /Delete /TN "\Microsoft\Windows\UPnP\Services" /F
  • schtasks.exe /End /TN "\Microsoft\Windows\UPnP\TPMangerAgentTask"
  • schtasks.exe /Delete /TN "\Microsoft\Windows\UPnP\TPMangerAgentTask" /F
  • schtasks.exe /End /TN "\Microsoft\Windows\Tcpip\TcpipReportingServices"
  • schtasks.exe /Delete /TN "\Microsoft\Windows\Tcpip\TcpipReportingServices" /F

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

It gathers the following information and reports it to its servers:

• MAC Address
• IP Address
• Computer name
• OS version
• CPU and GPU name

NOTES:
The value of the {Domain name} depends on the file %System%\EnrollCertXaml.dll which may contain more than one URL.