Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    04/05/2026, 18:45

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 14.4MB
  • Sample260504-xd26ssay2s
  • SHA256 36be2de78cc1ed4bcfeac2bdce2fb459ef436bc065f03d55205e6388228263c7
  • 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.

  • Drops file in System32 directory 7 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 17 IoCs
  • Drops file in Windows directory 17 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).

  • 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 14 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 9 IoCs
  • Suspicious use of SendNotifyMessage 7 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⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1072
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.1.24.9579\ae962e4a518f5d89\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:2816
  • 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:1908
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 97680EAB29F266905A8A68C2CE89CE14 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1068
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI142F.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240653468 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4080
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI16D0.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240654031 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4548
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI1B36.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240655171 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4400
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4196
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding B495129671CD25BC63B2B834FD54F7C8
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4604
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 9DDEE892BAA237AB939256A239AA01F9 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3464
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1160
    • C:\Program Files (x86)\ScreenConnect Client (ae962e4a518f5d89)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (ae962e4a518f5d89)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-woc1gx-relay.screenconnect.com&p=443&s=990a1ce8-85cd-451e-a923-ca135fd56284&k=BgIAAACkAABSU0ExAAgAAAEAAQCtPJxOs%2b9BxWtPNTAx9ZS1TdUy%2bPM4gthhrJ9ZmYpIH7LPMTCehZCUDm8UWWMViyUB69z4%2bN2xWMJ2x2samSMTQ9OG7fi18ptwhYtbqB74fTcRAqvMy8i8%2fdxotqDqDB%2bulUy4GzmjlEpMmENQCav48OUqxZ%2fieO8aFXgFpWniGsznwH1utBvrRLyO3Q8gnmt7fTHLtKuk2DDQTlAjSUSDH9slAkTJQ4AAilB6va4oL9d%2bZ4uEM%2fFmn2Jeq6DEeuOVSRWWD0GnnYLEldDCpPDC0K5LLoW2ia0YjS%2bVaw%2bfo9yyVtV%2fMijZfQgUyBqyt5Bn7Aks%2bs9%2fRAaOf66cjr2y&c=04893&c=venda&c=portugual&c=se3&c=&c=&c=&c="
      1⤵
      • Sets service image path in registry
      • Drops file in System32 directory
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:5040
      • C:\Program Files (x86)\ScreenConnect Client (ae962e4a518f5d89)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (ae962e4a518f5d89)\ScreenConnect.WindowsClient.exe" "RunRole" "f19000b6-7f46-4cc5-bc55-1eb3de9366f1" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1492
      • C:\Program Files (x86)\ScreenConnect Client (ae962e4a518f5d89)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (ae962e4a518f5d89)\ScreenConnect.WindowsClient.exe" "RunRole" "7f57365f-af93-4b76-bc09-e0c71b350f82" "System"
        2⤵
        • Drops file in System32 directory
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:3012

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5851e5.rbs

          • Path C:\Config.Msi\e5851e5.rbs
          • Size 214KB
          • SHA256 f9ecc6c8549931482e8b2e3c6fc651c9bf81ac30ff8f5961ff1a32d8b5bb490d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.de-DE.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (ae962e4a518f5d89)\Client.de-DE.resources
          • Size 55KB
          • SHA256 f248cb5f7b5eaff5d643fa148c7f675c2f1461a564f19b90ebdb71e575bb5f63
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (ae962e4a518f5d89)\Client.en-US.resources
          • Size 64KB
          • SHA256 efdb0b4fcc38b52cbf72336bd107a814db8454003f3495de21e2026a148823ea
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ae962e4a518f5d89)\ScreenConnect.Client.dll
          • Size 411KB
          • SHA256 28ff8468ad2db8b41fe9d9a2971dd56fea0aecad14808fe4b31c9b1072d3b129
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ae962e4a518f5d89)\ScreenConnect.ClientService.dll
          • Size 90KB
          • SHA256 9cf2c77df0a1a1e854ec1bbc6940d96f508bfb4b0555a07657c77314803a717e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (ae962e4a518f5d89)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 01341bd42426c3d110136cc94433df00dbad690a56593f7cca41a93f698f214a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ae962e4a518f5d89)\ScreenConnect.Core.dll
          • Size 572KB
          • SHA256 92e831159d5e9f2676241ab7ce80060a0b1dc34684f83797aec93b3ecff41139
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ae962e4a518f5d89)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 2292aac48ad575c6d1ed99c862e3408e254db34b8fea50cf3594aa08f3e875d0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ae962e4a518f5d89)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ae962e4a518f5d89)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 838KB
          • SHA256 3fa1fe4a588015cc94eceb06867f16a5e562293139fbf6b36bde21dba478968d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (ae962e4a518f5d89)\system.config
          • Size 970B
          • SHA256 9b9778b5bbdaf3752103a0dd68db1dbd2da9d47e8bd8650154945e5d4fa816c4
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 216b10c887784499981aecc3258888d57206d20da140c3cc49a4298ee96337c9
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 9ed1b073c128ae1e507676396a910b7293fa10fc7ac1b64bc8509b6acd88e55f
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 62372698252f515c727bd6c8e955911e887fe96b7af53fcb850fd84b268ddc10
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 3fe4e16b1706774c1b3d52c657f5355da0bc534d92f792421b03b8dcd3c0f779
          • 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 76ced2c52d647683572ceac0687933e96e198b5a6f998457fa334763cc1ef978
          • MD5 SHA1 SHA512 TLSH

          MSI142F.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI142F.tmp
          • Size 1.1MB
          • SHA256 cd6bccce073b2a5205840ec31c91df0d443cc57c68756de2c03e21db8e3fc157
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI142F.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI142F.tmp-\ScreenConnect.Core.dll
          • Size 562KB
          • SHA256 c51a2b5cb5054ec0136e332bf290c8af3392d7936b5137a07423df08ab33d264
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI142F.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 432abf3a198ff64fb2c660eb06b2bb33a16cf69fd28d836cfcb65c43d37dc462
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI142F.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 10933424536d53e397f651915f862c933199c50722943c236b020787b2e8f147
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI16D0.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI16D0.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 528242c7745783b3b4ae72fec13bb9bd49b17b0e00f60c027351147f21fdd359
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.1.24.9579\ae962e4a518f5d89\ScreenConnect.ClientSetup.msi
          • Size 11.9MB
          • SHA256 b9d639ca489eb79087816d586201ab589984882270f3af323144f851c3b6549d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI5417.tmp

          • Path C:\Windows\Installer\MSI5417.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (ae962e4a518f5d89)\user.config
          • Size 585B
          • SHA256 4519d87f17529edd2c515c63f94813a9931b05f5e76b8303d0dafb821787eb8a
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (ae962e4a518f5d89)\user.config
          • Size 585B
          • SHA256 b1007312962604e1f328661e4b6ae40b70c02c827e6d54f4774638c1332e1392
          • MD5 SHA1 SHA512 TLSH

          memory/1068-133-0x0000000001220000-0x000000000129C000-memory.dmp

          memory/1072-0-0x0000000005C80000-0x0000000005C90000-memory.dmp

          memory/1072-11-0x0000000007AF0000-0x0000000007BB1000-memory.dmp

          memory/1072-4-0x0000000005C90000-0x0000000005D24000-memory.dmp

          memory/1072-3-0x0000000001F20000-0x0000000001F2C000-memory.dmp

          memory/1072-2-0x0000000005C80000-0x0000000005C90000-memory.dmp

          memory/1072-6-0x0000000005D20000-0x0000000005ED0000-memory.dmp

          memory/1072-7-0x0000000006480000-0x0000000006A26000-memory.dmp

          memory/1072-5-0x0000000003870000-0x0000000003898000-memory.dmp

          memory/1072-1-0x0000000001EB0000-0x0000000001EB8000-memory.dmp

          memory/1072-8-0x0000000005C80000-0x0000000005C90000-memory.dmp

          memory/1492-220-0x000000001B2C0000-0x000000001B354000-memory.dmp

          memory/1492-218-0x0000000000230000-0x00000000002DA000-memory.dmp

          memory/1492-219-0x000000001AEB0000-0x000000001AF1A000-memory.dmp

          memory/1492-221-0x000000001B510000-0x000000001B6C0000-memory.dmp

          memory/1492-222-0x000000001B850000-0x000000001B9D8000-memory.dmp

          memory/1492-223-0x00000000023C0000-0x00000000023DA000-memory.dmp

          memory/1492-225-0x0000000002490000-0x00000000024D1000-memory.dmp

          memory/1492-224-0x0000000002410000-0x000000000242A000-memory.dmp

          memory/1492-230-0x00000000009D0000-0x00000000009DC000-memory.dmp

          memory/1908-226-0x000001BCB2870000-0x000001BCB287C000-memory.dmp

          memory/2816-207-0x0000000004DD0000-0x0000000004DD7000-memory.dmp

          memory/2816-206-0x0000000001350000-0x00000000013CC000-memory.dmp

          memory/2816-132-0x0000000004DD0000-0x0000000004DD7000-memory.dmp

          memory/2816-131-0x0000000001350000-0x00000000013CC000-memory.dmp

          memory/3012-249-0x00000000027B0000-0x00000000027BC000-memory.dmp

          memory/3464-200-0x0000000000CD0000-0x0000000000D4C000-memory.dmp

          memory/4080-42-0x0000000004C50000-0x0000000004C7E000-memory.dmp

          memory/4080-54-0x0000000004FB0000-0x0000000005160000-memory.dmp

          memory/4080-50-0x0000000004D60000-0x0000000004DF4000-memory.dmp

          memory/4080-46-0x0000000004C90000-0x0000000004C9C000-memory.dmp

          memory/4080-60-0x0000000002340000-0x00000000023BC000-memory.dmp

          memory/4400-130-0x0000000002390000-0x000000000240C000-memory.dmp

          memory/4548-97-0x0000000004D70000-0x0000000004D7E000-memory.dmp

          memory/4548-87-0x0000000004D10000-0x0000000004D38000-memory.dmp

          memory/4548-96-0x0000000002360000-0x00000000023DC000-memory.dmp

          memory/4604-199-0x0000000001620000-0x000000000169C000-memory.dmp

          memory/5040-212-0x0000000004910000-0x00000000049E5000-memory.dmp

          memory/5040-175-0x0000000004180000-0x000000000419A000-memory.dmp

          memory/5040-185-0x00000000044D0000-0x0000000004680000-memory.dmp

          memory/5040-181-0x0000000004250000-0x00000000042E4000-memory.dmp

          memory/5040-227-0x0000000004160000-0x000000000416B000-memory.dmp

          memory/5040-228-0x0000000004C10000-0x0000000004C2B000-memory.dmp

          memory/5040-229-0x0000000005560000-0x000000000557F000-memory.dmp

          memory/5040-198-0x00000000043A0000-0x00000000043F0000-memory.dmp

          memory/5040-210-0x00000000043F0000-0x0000000004431000-memory.dmp

          memory/5040-208-0x0000000004720000-0x00000000047B2000-memory.dmp

          memory/5040-205-0x0000000004460000-0x00000000044CA000-memory.dmp