Analysis

  • max time kernel
    148s
  • max time network
    139s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    10/07/2026, 06:14

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample260710-gzhfhsfx21
  • SHA256 f187df6caee5119f1548106f216b5ea864860564b9d3c70cbbadec19e6f2b2af
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 1 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.

  • 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.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 42 IoCs
  • 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.

  • Drops file in System32 directory 9 IoCs
  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 17 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

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

  • 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 SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:4696
  • 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 SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4676
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 71B34292B5934AA3D681EE1763C176D0 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3400
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI98B.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240716843 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4884
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIFB7.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240717781 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1400
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI1805.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240719921 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4932
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding AB9E150DF0F3BE569B0657D0C3FA355C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:4768
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding DDCF255D18C3470B2EFC97B0EE01C295 E Global\MSI0000
      2⤵
      • Loads dropped DLL
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:2128
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
      PID:2292
    • C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-mhr7aa-relay.screenconnect.com&p=443&s=2aa77e29-7670-49d8-be62-1f46c24df4af&k=BgIAAACkAABSU0ExAAgAAAEAAQD9Wu8CkvnuWWSs64VM5AIikVzL3ND2CHawjp4pO4X2jzjq%2bwP4vpXtGHP35gTEswTC2LeV3qRwbQ%2b5jso0XogtwiskP22AONJ5pXsApN8gqIvBLhKE7YDY5j0XnUz%2fR3FUxuH%2bGm7QnYibgjoUON5ThDRrRWgmFplDKbBRJYSH73YsmPdnyPKn%2f%2bCqHSdGQQaogr562%2bhqHutsQqiJbV6r4JEwHT8PuZGFQXwNWBG08bIEJqY5J7Hba2lFKImmcdBlc%2fG%2fqtReOzhR6v%2fejZoNREga%2fXNPDhGydo4GyMBgjE5QMEnEPmQfUeg%2btLhIFqxCcjm0nXWhAVx46G%2fcksqg"
      1⤵
      • Sets service image path in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4444
      • C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.WindowsClient.exe" "RunRole" "454ceb46-026f-4a5a-a874-88fc42986f4b" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2624
      • C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.WindowsClient.exe" "RunRole" "923425aa-1d58-4d20-af98-7b115547353e" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:6124

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e591c3a.rbs

          • Path C:\Config.Msi\e591c3a.rbs
          • Size 214KB
          • SHA256 6c9ccb6cab2d028593d37b405b14f5c6d86369a01d665577042abe581cf57e05
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 4010ea184982e71ad71e76b43266488c954f665324b89ef042cea9e463a60c9d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.ClientService.dll
          • Size 91KB
          • SHA256 6e6aa42b107d3e82b7b7dc18a75eee3f09e9f268788c0a7edbbc617152adf178
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 a94ecccb5b88e3860d619fbb3b87ff4af6448240ab65b89d610f348d75e793f2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.Core.dll
          • Size 577KB
          • SHA256 eedbd9ba4755f238af397c71b575082e18a31eabacc22abb4949f92fe991e169
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 305663a05c77c8058569a976db740aa2f20b66583f0381059633b628376570fc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.WindowsClient.exe
          • Size 676KB
          • SHA256 f49ca44ae19ec33053d76aeca7136193095b6583888a0be063b8120c3c9226c7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 ce75ee1188726b49d46477166faac6f8715ca1aa4afc5b8a687fcbfcd541c0c2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\system.config
          • Size 970B
          • SHA256 2ff160457fd94c2c2014de4725033740f01acd7a6941865e7d61b44abeb802a0
          • MD5 SHA1 SHA512 TLSH

          MSI98B.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI98B.tmp
          • Size 1.1MB
          • SHA256 18bacfd2a7c95800b6279cb8731bf03c8bbb526f5bc3790254a8e06d7ceee8ad
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI98B.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI98B.tmp-\ScreenConnect.Core.dll
          • Size 567KB
          • SHA256 15fec18d3a8990cdb540897ede61227353165668048c001164fcd22233cc8390
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI98B.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 c1142cc3ae09a7d3b5392539c29cbeb585543a38c93e37e55d82cbe0bb56d588
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI98B.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ae3005e1ca932eccde09c479fde2ecf8ea2feeb908dec4f0c830eab671276454
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSIFB7.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIFB7.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 7c27380976a5befc5a947e129eb464123f46d06cf0eb7f984ced921f36e1d0e7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI1E3D.tmp

          • Path C:\Windows\Installer\MSI1E3D.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e591c39.msi

          • Path C:\Windows\Installer\e591c39.msi
          • Size 9.8MB
          • SHA256 f187df6caee5119f1548106f216b5ea864860564b9d3c70cbbadec19e6f2b2af
          • MD5 SHA1 SHA512 SSDEEP TLSH

          dzhj1wyz.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (2cc43cbe89363313)\dzhj1wyz.newcfg
          • Size 683B
          • SHA256 3ad62dab1f49bb081c3a330869df8e3dd3ba34c76fdf8e783d2f91e312d10fa9
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (2cc43cbe89363313)\user.config
          • Size 520B
          • SHA256 35d470e23f249a35cba6c44aef4382470792717a7c675816053546fd0f69a49c
          • MD5 SHA1 SHA512 TLSH

          z2akngh5.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (2cc43cbe89363313)\z2akngh5.newcfg
          • Size 882B
          • SHA256 a230ca4f42e7ad3a31aa47c76cee6d9cee0d96e961fe90193cdf705fa0ae9144
          • MD5 SHA1 SHA512 TLSH

          memory/1400-62-0x0000000003360000-0x0000000003388000-memory.dmp

          memory/2624-203-0x000000001B4A0000-0x000000001B50C000-memory.dmp

          memory/2624-202-0x00000000007C0000-0x000000000086E000-memory.dmp

          memory/2624-204-0x000000001B8D0000-0x000000001B964000-memory.dmp

          memory/2624-205-0x000000001BB20000-0x000000001BCD0000-memory.dmp

          memory/2624-206-0x00000000029A0000-0x00000000029BA000-memory.dmp

          memory/2624-207-0x000000001CA80000-0x000000001CC08000-memory.dmp

          memory/4444-152-0x0000000004060000-0x00000000040B0000-memory.dmp

          memory/4444-183-0x0000000004420000-0x00000000044F6000-memory.dmp

          memory/4444-181-0x00000000040B0000-0x00000000040F1000-memory.dmp

          memory/4444-179-0x0000000004230000-0x00000000042C2000-memory.dmp

          memory/4444-178-0x0000000004120000-0x000000000418C000-memory.dmp

          memory/4444-146-0x0000000003EB0000-0x0000000004060000-memory.dmp

          memory/4444-142-0x0000000003C60000-0x0000000003CF4000-memory.dmp

          memory/4444-136-0x0000000003BA0000-0x0000000003BBA000-memory.dmp

          memory/4884-31-0x0000000006330000-0x00000000064E0000-memory.dmp

          memory/4884-32-0x0000000006AA0000-0x000000000705A000-memory.dmp

          memory/4884-27-0x00000000060E0000-0x0000000006174000-memory.dmp

          memory/4884-23-0x0000000005FF0000-0x0000000005FFC000-memory.dmp

          memory/4884-19-0x0000000005FB0000-0x0000000005FDE000-memory.dmp