Analysis by: Joshua John Bantayan
ALIASES:

PowerShell/Agent.NL trojan (NOD32)

 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

Infection Channel: Dropped by other malware, Downloaded from the Internet

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

File Size: 8,311 bytes
File Type: PS1
Memory Resident: No
Initial Samples Received Date: 12 Aug 2020
Payload: Disables services, Terminates processes

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.

Process Termination

This Trojan terminates the following services if found on the affected system:

  • 3CX
  • ADWS
  • AGMService
  • AGSService
  • AMPPALR3
  • AMS
  • ARSM
  • ASM
  • AcrSch2Svc
  • AcronisActiveProtectionService
  • AcronisAgent
  • AcronisMonitoringService
  • AcronisZmqGw
  • AdobeARMservice
  • AdobeActiveFileMonitor10.0
  • AdobeFlashPlayerUpdateSvc
  • AdobeUpdateService
  • AnyDesk
  • Apache
  • Apple Bonjour Service
  • Apple Mobile Device
  • Apple Mobile Device Service
  • BASupportExpressSrvcUpdater_LOGICnow
  • BASupportExpressSrvcUpdater_N_Central
  • BASupportExpressStandaloneService_LOGICnow
  • BASupportExpressStandaloneService_N_Central
  • BTHSSecurityMgr
  • Backupper Service
  • BayanService
  • CIMnotify
  • CcmExec
  • Check_MK_Agent
  • Cissesrv
  • ClickToRunSvc
  • CodeMeter.exe
  • CpqNicMgmt
  • CpqRcmc3
  • CqMgHost
  • CqMgServ
  • CqMgStor
  • DESIGO INSIGHT Trace Service
  • DPMClientService
  • DPMRA
  • DpmCPWrapperService
  • DriveLock
  • FileOpenManagerSvc
  • FlowExport
  • FontCache
  • HPSIService
  • HPWMISTOR
  • HealthService
  • IAStorDataMgrSvc
  • IBM Domino
  • LicSvrM
  • MMAExtensionHeartbeatService
  • MMS
  • MSCRMAsyncService
  • MSCRMAsyncService`$maintenance
  • MSCRMMonitoringService
  • MSCRMSandboxService
  • MSCRMUnzipService
  • MSDTC
  • MSExchange
  • MSOLAP`$SQL
  • MSSQL
  • Microsoft.Crm.VssWriterService.exe
  • MsDts
  • MsDtsServer100
  • MySQL
  • NGCLIENT
  • NVWMI
  • NetPipeActivator
  • NetTcpActivator
  • NetTcpPortSharing
  • OpenVPNAccessClient
  • OracleMTSRecoveryService
  • OracleOraDb11g_home1ClrAgent
  • OracleOraDb11g_home1TNSListener
  • OracleServiceINFAORCL
  • PolicyAgent
  • ProLiantMonitor
  • QB
  • QBCFMonitorService
  • QBFCService
  • QuickBooksDB
  • msftesql
  • QuickBooksDB20
  • RdAgent
  • Realtek11nCU
  • ReportServer
  • ReportServer`$ISARS
  • ReportServer`$SQL
  • RtkAudioService
  • SDRSVC
  • SNMPTRAP
  • SPAdmin
  • SPTrace
  • SQL
  • SentinelKeysServer
  • SentinelProtectionServer
  • SentinelSecurityRuntime
  • ShadowProtectSvc
  • ShutdownMon
  • SoftwareProxyJavaChecker
  • Spooler
  • SysMgmtHp
  • TdmService
  • TeamViewer
  • Tomcat
  • UNS
  • VGAuthService
  • VMAuthdService
  • VMTools
  • VMUSBArbService
  • VMnetDHCP
  • VMware
  • VSS
  • Veeam
  • VisualSVN
  • VisualSVNServer
  • WSearch
  • WinDefend
  • WindowsAzure
  • Wsearch
  • aspnet_state
  • bkserv
  • btwdins
  • cpqvcagent
  • cramsrv
  • crserv
  • crsyslog
  • db
  • dbex
  • discagt
  • disvc
  • dlhm
  • dwmrcs
  • fvstermiser
  • hMailServer
  • hist32
  • iPod Service
  • ibmiasrw
  • jhi_service
  • mr2kserv
  • msftesql-Exchange
  • mysql
  • nvsvc
  • oracle
  • osppsvc
  • pgguard
  • pgsql
  • postgresql
  • sppsvc
  • sshd
  • swprv
  • sysdown
  • tvnserver
  • uvnc_service
  • vbox
  • vcsFPService
  • vmic
  • vmicheartbeat
  • vmickvpexchange
  • vmicrdv
  • vmicshutdown
  • vmictimesync
  • vmicvss
  • vmw
  • wamp
  • wbengine
  • wlidsvc
  • SBOCli Rbkernel RbApplic RbSch

It terminates the following processes if found running in the affected system's memory:

  • ABService
  • AGMService
  • AGSService
  • Acrobat
  • Adobe CEF Helper
  • Adobe Desktop Service
  • AdobeARM
  • AdobeCollabSync
  • AdobeIPCBroker
  • AdobeUpdateService
  • Agent_CORBA
  • AnyDesk
  • ApacheMonitor
  • AppleMobileDeviceService
  • ApplicationFrameHost
  • AsmMonitoringAgent
  • Atenet.Service
  • BASupSrvc
  • BASupSrvcCnfg
  • BASupSrvcUpdater
  • BTHSAmpPalService
  • BTHSSecurityMgr
  • BayanService
  • BigAnt
  • BmsAccess
  • BmsCommon
  • BmsPonAlarmTL1
  • BmsPonEmsTL1
  • BmsTest
  • BrCcUxSys
  • BrCtrlCntr
  • BrStMonW
  • BrYNSvc
  • BrotherHelp
  • BulkCollectorDm
  • CCC
  • CCXProcess
  • CcmExec
  • Citect32
  • CodeMeter
  • CodeMeterCC
  • ConfigurationWizard
  • CoreSync
  • Creative Cloud
  • CrmAsyncService
  • DLHM
  • DLMDnsSvc
  • DPMClient
  • DPMClientService
  • DPMClientUI
  • DWRCS.EXE
  • DWRCST.EXE
  • DellSystemDetect
  • DismHost
  • DriveLock
  • DymoPnpService
  • DymoQuickPrint
  • DynUpSvc
  • EEventManager
  • EFI
  • ES1000
  • ES1000Server
  • ES1000Service
  • EXCEL.EXE
  • Ec2Config
  • EcuRemote
  • EdgeTransport
  • Everything
  • Evolution
  • EvolutionECommService
  • Fiery Software
  • Fiery Software Manager
  • FileOpenBroker64
  • FileOpenManagerSvc64
  • FlashUtil64_31_0_0_122_ActiveX
  • FlowExport
  • Freedom.ServiceHost
  • GWX
  • GoogleCrashHandler
  • GoogleUpdate
  • HPDesignJetUtility
  • HPSIsvc
  • HPWMISVC
  • IAStorDataMgrSvc
  • IAStorIcon
  • IBM
  • Launchpad
  • LavasoftTcpService
  • LicSvrM
  • MOM
  • MSExchangeADTopologyService
  • MSExchangeMailSubmission
  • MSExchangeMailboxAssistants
  • MSExchangeThrottling
  • MSExchangeTransport
  • MSExchangeTransportLogSearch
  • MacriumService
  • MailRuUpdater
  • Microsoft.ActiveDirectory.WebServices
  • Microsoft.Crm.VssWriterService
  • Microsoft.Exchange.AddressBook.Service
  • Microsoft.Exchange.AntispamUpdateSvc
  • Microsoft.Exchange.EdgeSyncSvc
  • Microsoft.Exchange.Imap4
  • Microsoft.Exchange.Imap4Service
  • Microsoft.Exchange.Pop3
  • Microsoft.Exchange.Pop3Service
  • Microsoft.Exchange.ProtectedServiceHost
  • Microsoft.Exchange.RpcClientAccess.Service
  • Microsoft.Exchange.ServiceHost
  • MonAgentCore
  • MonAgentHost
  • MonAgentManager
  • MonitoringHost
  • MpCmdRun
  • MsDtsSrvr
  • MsExchangeFDS
  • ONENOTEM.EXE
  • OSPPSVC.EXE
  • OUTLOOK.EXE
  • OfficeClickToRun
  • OfficeHubTaskHost
  • PAGEANT.EXE
  • POWERPNT.EXE
  • PUTTY.EXE
  • PWRISOVM
  • PWRISOVM.EXE
  • PhotoshopElementsFileAgent
  • PmRepAgent
  • PrintIsolationHost
  • PrivacyIconClient
  • PrnHtml
  • ProLiantMonitor
  • QBCFMonitorService
  • QBDBMgrN
  • QBW32.EXE
  • RSHostingService
  • RSManagement
  • RSPortal
  • Receiver
  • ReflectMonitor
  • ReflectUI
  • ReportingServicesService
  • RoxioBurnLauncher
  • RtDCpl
  • RtHDVBg
  • RtWLan
  • RtkAudioService
  • RtlService
  • SMSvcHost
  • SNMPAgent
  • SPA_Net
  • SQLAGENT.EXE
  • SearchIndexer
  • SecurityScanMgr
  • SelfService
  • SelfServicePlugin
  • Service_KMS
  • Siemens.DesigoInsight.Service
  • SkyLightWorkspace
  • SkyLightWorkspaceConfigService
  • Stxhd.HostAgents
  • Stxhd.HostAgents.ChannelRegistrar
  • Stxhd.HostAgents.HAService
  • Stxhd.HostAgents.InputInjectionAgent
  • Stxhd.HostAgents.LogonAgent
  • Stxhd.HostAgents.LogstashAgent
  • Stxhd.HostAgents.PanamaCredsAgent
  • Stxhd.HostAgents.PegasusAgent
  • Stxhd.HostAgents.StxhdAgent
  • TNSLSNR.EXE
  • TdmService
  • TeamViewer_Service
  • Tomcat8Testing
  • Tomcat9
  • TortoiseProc
  • UNS
  • UltraViewer_Service
  • VSSVC
  • Veeam.Backup.CatalogDataService
  • Veeam.Backup.MountService
  • Veeam.Guest.Interaction.Proxy
  • VeeamDeploymentSvc
  • VeeamNFSSvc
  • VeeamTransportSvc
  • VisualSVNServer
  • WINWORD.EXE
  • WLIDSVC.EXE
  • WLIDSVCM.EXE
  • WaAppAgent
  • WinRAR
  • WindowsAzureGuestAgent
  • WindowsAzureTelemetryService
  • WrmServ
  • XperiaCompanionService
  • YunDetectService
  • account_server
  • acronis_license_service
  • acronis_notification_service
  • acrotray
  • agent
  • aircontrol
  • amazon-ssm
  • amazon-ssm-agent
  • ams_web_service
  • api_gateway
  • armsvc
  • arsm
  • asm
  • aspnet_state
  • atieclxx
  • atiesrxx
  • audiodg
  • bes10
  • bkserv
  • black
  • btwdins
  • capiws
  • catalog_manager
  • check_mk_agent
  • chrome
  • concentr
  • cpqnimgt
  • cpqteam
  • cqmghost
  • cqmgserv
  • cqmgstor
  • cramsrv
  • crserv
  • cygrunsrv
  • dbextclr11
  • ddm
  • discagt
  • e-faktura notifier
  • eEBSvc
  • egui
  • ekm
  • excel
  • exfba
  • fbguard
  • fbserver
  • fdhost
  • fdlauncher
  • firefox
  • fmplugin
  • ftpdaemon
  • fvstermiser
  • group_manager
  • hMailServer
  • hist32
  • hpsmhd
  • hpssaresponder
  • hpwmistor
  • hpwuschd2
  • httpd
  • iPodService
  • iTunesHelper
  • igfxEM
  • igfxHK
  • igfxTray
  • infasvcs
  • java
  • javacp
  • javaw
  • jhi_service
  • jre-8u191-windows-au
  • jucheck
  • jusched
  • lmgrd
  • mDNSResponder
  • mad
  • mmc
  • mqsvc
  • mrupdsrv
  • msaccess
  • msdtc
  • msexchangerepl
  • msftesql
  • msmdsrv
  • msserver
  • mysql
  • mysqld
  • mysqld-nt
  • net stop DymoPnpService
  • ngctw32
  • ngtray
  • node
  • ntfsvc
  • nusb3mon
  • nvvsvc
  • nvwmi64
  • ofaApp
  • omtsreco
  • oracle
  • pcoip_
  • pcoip_agent
  • pcoip_arbiter_win32
  • pcoip_vchan_printing_svc
  • pmserver
  • pmwflmgr
  • pmwfmntr
  • policy_manager
  • postg
  • python
  • qbupdate
  • redirector
  • rotatelogs
  • rundll32
  • sage
  • scheduler
  • shutdownmon
  • smhstart
  • snmpc32
  • sntlkeyssrvr
  • sntlsrtsrvr
  • spnsrvnt
  • spoolsv
  • sppsvc
  • sql
  • sqlbrowser
  • sqlceip
  • sqlservr
  • sqlwriter
  • sshd
  • startupcfg
  • store
  • task_manager
  • textagent
  • trcsrv
  • uTorrent
  • unsecapp
  • update_service
  • upeksvr
  • utorrentie
  • vault_manager
  • vcagent
  • vcsFPService
  • vee
  • vmtoolsd
  • vmware
  • w3wp
  • wfcrun32
  • winvnc
  • winword
  • zmqgw

Other Details

This Trojan does the following:

  • Terminates VM Services
  • Deletes shadow copies
  • Clears event logs
  • Changes cmd forground color to "darkgray"
  • Changes cmd background color to "cyan"

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 16.162.03
FIRST VSAPI PATTERN DATE: 13 Aug 2020
VSAPI OPR PATTERN File: 16.163.00
VSAPI OPR PATTERN Date: 14 Aug 2020

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.KILLSVC.A. 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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