Analysis by: Raighen Sanchez

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Canal de infección Downloaded from the Internet, Dropped by other malware

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

  TECHNICAL DETAILS

Tamaño del archivo 5,870 bytes
Tipo de archivo PS1
Residente en memoria No
Fecha de recepción de las muestras iniciales 22 Jul 2025
Carga útil Disables services, Deletes files

Arrival Details

This Trojan 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 adds the following processes:

  • powershell.exe -Verb RunAs -ArgumentList ('exec bypass -file "{malware fullpath}" -elevated' -f (%myinvocation.MyCommand.Definition))

Other Details

This Trojan does the following:

  • It deletes itself after its malicious routine.
  • It checks if it has administrator privileges.
  • It removes the shadow copy of the system by deleting the following WMI object:
    • Win32_ShadowCopy
  • It disables all the running services in the system except the following:
    • UdkUserSvc*
    • DevicesFlowUserSvc*
    • AarSvc*
    • WpnUserService*
    • CDPUserSvc*
    • cbdhsvc*
    • UserDataSvc*
    • PimIndexMaintenanceSvc*
    • UnistoreSvc*
    • vmicguestinterface
    • vmicheartbeat
    • vmickvpexchange
    • vmicrdv
    • vmicshutdown
    • vmictimesync
    • vmicvss
    • LicenseService
    • MSSEARCH
    • smphost
    • SrmReports
    • SrmSvc
    • ddpvssvc
    • msiserver
    • KtmRm
    • DeviceInstall
    • Onesyncsvc*
    • WsusService
    • NgcSvc
    • ClipSVC
    • ALG
    • FileSyncHelper
    • LxpSvc
    • dmwappushservice
    • PeerDistSvc
    • Eaphost
    • WlanSvc
    • WwanSvc
    • dot3svc
    • server
    • workstation
    • WinDefend
    • WSRM
    • WINS
    • silsvc
    • WaaSMedicSvc
    • NgcCtnrSvc
    • RmSvc
    • Adws
    • adfssrv
    • Aelookupsvc
    • Anydesk
    • Apphostsvc
    • Appinfo
    • Appmgmt
    • Appxsvc
    • Bfe
    • Bits
    • Brokerinfrastructure
    • Browser
    • Bthavctpsvc
    • camsvc
    • Cdpsvc
    • Certpropsvc
    • CscService
    • Certsvc
    • SmbWitness
    • Clussvc
    • Comsysapp
    • Coremessagingregistrar
    • Cryptsvc
    • MMCSS
    • Dbxsvc
    • dbupdate
    • dbupdatem
    • Dcomlaunch
    • Deviceassociationservice
    • Dfs
    • NfsClnt
    • NfsService
    • Dfsr
    • Dhcp
    • Dhcpserver
    • Diagtrack
    • TabletInputService
    • DispBrokerDesktopSvc
    • Dns
    • Dnscache
    • Dnsproxy
    • Dosvc
    • Dps
    • Dsmsvc
    • DusmSvc
    • Dssvc
    • Efs
    • Eventlog
    • NtLmSsp
    • Eventsystem
    • Fdphost
    • Fdrespub
    • Fontcache*
    • Gpsvc
    • Hidserv
    • Hvhost
    • Ias
    • Ikeext
    • Iphlpsvc
    • Ismserv
    • Kdc
    • Kdssvc
    • Keyiso
    • Kpssvc
    • Lanmanserver
    • Lanmanworkstation
    • Lfsvc
    • Licensemanager
    • Lmhosts
    • Lsm
    • LSM
    • Mpssvc
    • Msdtc
    • WinTarget
    • Msiscsi
    • Msmq
    • Ncbservice
    • Netlogon
    • Netman
    • Netprofm
    • Netsetupsvc
    • WZCSVC
    • Nlasvc
    • Nla
    • SharedAccess
    • Nsi
    • Ntds
    • Ntfrs
    • UPlugPlay
    • Plugplay
    • Policyagent
    • Power
    • Profsvc
    • Psexesvc
    • Ramgmtsvc
    • Rasauto
    • Rasman
    • Remoteaccess
    • Remoteregistry
    • Rpceptmapper
    • Rpchttplbs
    • Rpcss
    • Samss
    • Scdeviceenum
    • Schedule
    • Seclogon
    • Securityhealthservice
    • Sens
    • Sessionenv
    • Shellhwdetection
    • Ssdpsrv
    • Sstpsvc
    • Staterepository
    • SgrmBroker
    • Stisvc
    • Storsvc
    • Swprv
    • Sysmain
    • ProtectedStorage
    • Systemeventsbroker
    • RDMS
    • rpcapd
    • Tapisrv
    • Termservice
    • Tssdis
    • TScPubRPC
    • TermServLicensing
    • Themes
    • Tiledatamodelsvc
    • Timebroker
    • Timebrokersvc
    • Tokenbroker
    • Trkwks
    • Trustedinstaller
    • Tsgateway
    • Ualsvc
    • uhssvc
    • Umrdpservice
    • Upnphost
    • Usermanager
    • Uxsms
    • OneDrive Updater Service
    • lltdsvc
    • Vaultsvc
    • Vds
    • vmicvmsession
    • Vmcompute
    • Vmms
    • nvspwmi
    • vhdsvc
    • Vss
    • W32time
    • Was
    • Wcmsvc
    • wcncsvc
    • wscsvc
    • Wdiservicehost
    • Webclient
    • Winhttpautoproxysvc
    • Winmgmt
    • Winrm
    • Wlidsvc
    • Wmiapsrv
    • Wpdbusenum
    • Wpnservice
    • Wsearch
    • dmserver
    • Wuauserv
  • It deletes all network shares except the following:
    • SYSVOL
    • NETLOGON
  • It deletes the following shared folders:
    • print
    • prnproc

  SOLUTION

Motor de exploración mínimo 9.800
Primer archivo de patrones de VSAPI 20.344.05
Primera fecha de publicación de patrones de VSAPI 22 Jul 2025
Versión de patrones OPR de VSAPI 20.345.00
Fecha de publicación de patrones OPR de VSAPI 23 Jul 2025

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.

Step 2

Scan your computer with your Trend Micro product to delete files detected as Trojan.PS1.DEADLOCK.YXFGV. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check the following Trend Micro Support pages for more information:


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