Analysis

  • max time kernel
    298s
  • max time network
    275s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260911-it
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260911-itlocale:it-itos:windows10-ltsc_2021-x64systemwindows
  • submitted
    10/11/2026, 11:02

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 12.2MB
  • Sample261110-m5hlcsstex
  • SHA256 48d51b65d615f90988dd902611b829b3ec411d256f7a7757d8217019d8705a98
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 3 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Sets service image path in registry 3 TTPs 1 IoCs

    This determines the executable launched when a service starts. It can be used to establish persistence.

  • ConnectWise ScreenConnect remote access tool

    ConnectWise ScreenConnect is a remote desktop tool that can be used as a backdoor.

  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Boot or Logon Autostart Execution: Authentication Package 1 TTPs 1 IoCs

    Suspicious Windows Authentication Registry Modification.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops file in System32 directory 10 IoCs
  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 13 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 42 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 6 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 13 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of SendNotifyMessage 5 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe
    "C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3044
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.5.9742\a3f4bc316c722457\ScreenConnect.ClientSetup.msi" SC_EXE_PATH="C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe"
      2⤵
      • Badlisted process makes network request
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:4740
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Boot or Logon Autostart Execution: Authentication Package
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4736
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 9664A91C7F6D5F121D5F17E645FEE0B4 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2668
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSID397.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240702484 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1400
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSID5F9.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240702968 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • Reads the TCP/IP host and domain name from the registry
        • System Location Discovery: System Language Discovery
        PID:4940
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIDB88.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240704406 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:520
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3428
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 752A5392D133523D0907CA38E91B1C01
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:888
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding EB17724789C6F1EB4BD31AF0854A25E2 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1180
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3820
    • C:\Program Files (x86)\ScreenConnect Client (a3f4bc316c722457)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (a3f4bc316c722457)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-f8bcb1-relay.screenconnect.com&p=443&s=0a021ce9-d532-4ae7-8a53-8bdb14e99b9a&k=BgIAAACkAABSU0ExAAgAAAEAAQBt5tTeOblV%2bdUbL9FVP5pIpAo1oRf2woEhKpewuVIHHBmTw9WcdgvxJFm0H2y9%2f9iJew9EEKTkXVEOEDy%2bJxxtL5OOb7f5mqGfoVbNL5%2fOST9dNHCQODjqwXmUb5hy9A2l8dHTJq8L4i9vD5UJ7p7m8%2fmDKudnlHughgFO0VVIxvlRygCHzv%2fVPIOM74rsR3swMVeCeTYvfNN%2bV2HWK2QuDYhmYdr8Fg3Web7nZR1XTKy5vujOZo2ZIDsCKfL%2bmj3eUzfvfBDjnmOafQ7mPoml%2f62tJ6FjY%2f8pG7wQsfHzGCvxOAfs14kh3luXsIVCS9z1Y84G%2biDvAaRgFWu722m5&c=11%2f05%2f2026&c=&c=&c=&c=&c=&c=&c="
      1⤵
      • Sets service image path in registry
      • Drops file in System32 directory
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1512
      • C:\Program Files (x86)\ScreenConnect Client (a3f4bc316c722457)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (a3f4bc316c722457)\ScreenConnect.WindowsClient.exe" "RunRole" "2b8c4d5b-fef2-491d-b82c-7ff58e6065f2" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4084
      • C:\Program Files (x86)\ScreenConnect Client (a3f4bc316c722457)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (a3f4bc316c722457)\ScreenConnect.WindowsClient.exe" "RunRole" "6a97d8f0-ce7e-40da-bd6f-21846df99ad5" "System"
        2⤵
        • Drops file in System32 directory
        • Executes dropped EXE
        • Reads the TCP/IP host and domain name from the registry
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4576

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e592cf3.rbs

          • Path C:\Config.Msi\e592cf3.rbs
          • Size 214KB
          • SHA256 48f943d9abf87a6848c171aa32494bccc58f8673f8b51a1c1644797fbe4ac9e8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (a3f4bc316c722457)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (a3f4bc316c722457)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a3f4bc316c722457)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 27e873d0fceefdd1a12ca77e3bbecec2ece7acdba433b47dca102c35e1c5896c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a3f4bc316c722457)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 78fa9cf69577f6990275c7c472f7114f9d0c85e660f3b9c81b085fc3cfbc8673
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (a3f4bc316c722457)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 5956f9afb3ba610c38b2cfda88dd15be98783963769a12020c93ce05e749b3c3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a3f4bc316c722457)\ScreenConnect.Core.dll
          • Size 582KB
          • SHA256 4eab8752d05cd31bafd07edde7d18061cb63eea99af3132460e6dc08bb5f9e73
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a3f4bc316c722457)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ec4de5e6e9c079a30a5780d79ee662e0a4c6d009f0e3f911edc560973fb17d1e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a3f4bc316c722457)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a3f4bc316c722457)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 7511e679597572782241ff989c065c02f9f5a12ab37290b69a27226eda57ce75
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (a3f4bc316c722457)\system.config
          • Size 966B
          • SHA256 f448666386859e6aa9b39b8ef6b99a8f10bf4aa52066151168f5766447fcf336
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 05c8e3c19b5c593e32dbb4f0b04cc947b3901cc9160ce1068dedcf7279682431
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 d49b2f90d9c5e4f1dce4722f1254f05246ca7f0ca2c021cf5eb353bc427a33b3
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 d867a4050560715403f34ffa3d9cc62689bccff7429dd6e40f678700664864e0
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 e7b0636a536d0f351a104e6b931828821faacbb5c63692213299b35d5cc9fd1b
          • MD5 SHA1 SHA512 TLSH

          rundll32.exe.log

          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\rundll32.exe.log
          • Size 746B
          • SHA256 707c0e90ab433305fb10151c93aed7664319ba55ec59b7304d38481af4f5a4a2
          • MD5 SHA1 SHA512 TLSH

          MSID397.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSID397.tmp
          • Size 1.1MB
          • SHA256 400ff5b9a4439339876282909b23c397ffa208f4bcf64460fa2521284acf0b6e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID397.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID397.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 2022f13b1f562d3cbef3a3926f0370a2de64e57ff281a121f90001a47499a356
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSID5F9.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID5F9.tmp-\ScreenConnect.Core.dll
          • Size 572KB
          • SHA256 74f2d225b492eb77a5654bcaafec5162d0c5f72de884daa4c32daf54e2bff3d7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID5F9.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 93f910f732855000861c1b4e6c55a2dee0a8cbb2172d89c7a2bc99053746c193
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID5F9.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 361bbc692084841e4c8d22c89ca89c711d0fe17bc8759241736531a2f28de25b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.5.9742\a3f4bc316c722457\ScreenConnect.ClientSetup.msi
          • Size 9.8MB
          • SHA256 e1f6bd53b8a85079255835a97f7a848afdf22196153d7a89babd7ae847e2b002
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI2FA2.tmp

          • Path C:\Windows\Installer\MSI2FA2.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ex2sdww1.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a3f4bc316c722457)\ex2sdww1.newcfg
          • Size 683B
          • SHA256 6722783fe084e2169e2f1d3d5636026e33392803b9c601de4e671cfd0b9c9ff0
          • MD5 SHA1 SHA512 TLSH

          gx5ewamo.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a3f4bc316c722457)\gx5ewamo.newcfg
          • Size 884B
          • SHA256 6f9230bfed2b70fcebc5ea512ef70f6de15df3a2b297914faf869b1733ed514a
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a3f4bc316c722457)\user.config
          • Size 520B
          • SHA256 147990ca70513dd53e1816ef9eb040b43f6666582598a10f12dcb54fa2538cee
          • MD5 SHA1 SHA512 TLSH

          memory/1400-48-0x0000000005970000-0x0000000005A06000-memory.dmp

          memory/1400-52-0x0000000005BC0000-0x0000000005D70000-memory.dmp

          memory/1400-40-0x00000000058A0000-0x00000000058CE000-memory.dmp

          memory/1400-44-0x0000000005870000-0x000000000587C000-memory.dmp

          memory/1512-179-0x00000000042A0000-0x00000000042F0000-memory.dmp

          memory/1512-209-0x0000000004360000-0x00000000043CC000-memory.dmp

          memory/1512-175-0x0000000004400000-0x00000000045B0000-memory.dmp

          memory/1512-210-0x0000000004650000-0x00000000046E2000-memory.dmp

          memory/1512-171-0x0000000004150000-0x00000000041E6000-memory.dmp

          memory/1512-212-0x0000000004250000-0x0000000004291000-memory.dmp

          memory/1512-214-0x0000000004830000-0x0000000004906000-memory.dmp

          memory/1512-165-0x0000000001B50000-0x0000000001B6A000-memory.dmp

          memory/3044-4-0x0000000003930000-0x000000000393C000-memory.dmp

          memory/3044-0-0x0000000005F50000-0x0000000005F60000-memory.dmp

          memory/3044-9-0x0000000005F50000-0x0000000005F60000-memory.dmp

          memory/3044-5-0x0000000005EC0000-0x0000000005F56000-memory.dmp

          memory/3044-1-0x0000000001ED0000-0x0000000001ED8000-memory.dmp

          memory/3044-7-0x0000000005FA0000-0x0000000006150000-memory.dmp

          memory/3044-3-0x0000000005F50000-0x0000000005F60000-memory.dmp

          memory/3044-2-0x0000000005F50000-0x0000000005F60000-memory.dmp

          memory/3044-8-0x0000000006710000-0x0000000006CB6000-memory.dmp

          memory/3044-6-0x0000000005F70000-0x0000000005F98000-memory.dmp

          memory/4084-232-0x000000001B2C0000-0x000000001B356000-memory.dmp

          memory/4084-231-0x0000000002570000-0x00000000025DC000-memory.dmp

          memory/4084-233-0x000000001B510000-0x000000001B6C0000-memory.dmp

          memory/4084-230-0x00000000002D0000-0x0000000000380000-memory.dmp

          memory/4084-236-0x0000000000C30000-0x0000000000C4A000-memory.dmp

          memory/4084-237-0x000000001D580000-0x000000001D708000-memory.dmp

          memory/4084-238-0x000000001D710000-0x000000001D812000-memory.dmp

          memory/4940-84-0x0000000005F30000-0x0000000005F58000-memory.dmp