Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    24/04/2026, 12:35

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 14.2MB
  • Sample260424-psnb7ah19v
  • SHA256 3abb02fc67be4e553ed0f961a0f00119bdfaffdb402136ce1b19a89d88d61562
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 5 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:4884
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.1.24.9579\2be711191a6d25be\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:392
  • 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:1876
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 16A6B697B35BFA504CE3F8BD27B1B2B4 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2260
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSID1E6.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240636437 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4400
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSID35E.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240636781 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2056
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSICB3C.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240700343 19 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1016
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2496
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 477CABD919CA5F677003D4FC82AF7889
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1248
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 2928222A349A0615E572017CC1415AB4 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:236
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1784
    • C:\Program Files (x86)\ScreenConnect Client (2be711191a6d25be)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (2be711191a6d25be)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-eefr6a-relay.screenconnect.com&p=443&s=73bb0b82-aa2e-4efd-9159-ac7c13f4350e&k=BgIAAACkAABSU0ExAAgAAAEAAQAp3ZiMnmZZEn2UFMyW7ngJvQ9o8phKZq525p7mHexLvi0lYS%2f9FZQnaguvX9Baz7Z0Gy1M4%2fmfO%2bS%2bYmBQ5C1QnSWMS7frwvrxLo5GXJWbWS5mu1pCzREabr8oRaBkxaEkX4BH%2fXhWEysoZGAPmb%2fk0GASxfR8Iz%2f4eJ2%2fkIt32uclD2weE9bGw9nowSMMS%2ffR8qIOtXnplHYwqAA1m%2b%2fY%2bK9MpgTTuvUw8ieTOOsw5d%2bZLseBNU1o6xaihSNQKMzVHBphaG8dF5pAhMQbyMVEGUwaqrX%2bWFHBzxz1Yv9kIE9IZMKXEKwTApQJAU3eD1keBnHAJ%2fEAONRotPQYLkXR&c=asde&c=ser&c=ad&c=sds&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:3116
      • C:\Program Files (x86)\ScreenConnect Client (2be711191a6d25be)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (2be711191a6d25be)\ScreenConnect.WindowsClient.exe" "RunRole" "3798570e-df96-46ee-b01b-0f3073c81437" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1280
      • C:\Program Files (x86)\ScreenConnect Client (2be711191a6d25be)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (2be711191a6d25be)\ScreenConnect.WindowsClient.exe" "RunRole" "5cc63104-f408-4cc4-8409-127923833e5a" "System"
        2⤵
        • Drops file in System32 directory
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:612

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e58fc5d.rbs

          • Path C:\Config.Msi\e58fc5d.rbs
          • Size 214KB
          • SHA256 9f31ae1f3affa15432dce8218379b41cf496248785fa8543a2512f420521fb0c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (2be711191a6d25be)\ScreenConnect.Client.dll
          • Size 411KB
          • SHA256 28ff8468ad2db8b41fe9d9a2971dd56fea0aecad14808fe4b31c9b1072d3b129
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (2be711191a6d25be)\ScreenConnect.ClientService.dll
          • Size 90KB
          • SHA256 9cf2c77df0a1a1e854ec1bbc6940d96f508bfb4b0555a07657c77314803a717e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (2be711191a6d25be)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 01341bd42426c3d110136cc94433df00dbad690a56593f7cca41a93f698f214a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (2be711191a6d25be)\ScreenConnect.Core.dll
          • Size 572KB
          • SHA256 92e831159d5e9f2676241ab7ce80060a0b1dc34684f83797aec93b3ecff41139
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (2be711191a6d25be)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 2292aac48ad575c6d1ed99c862e3408e254db34b8fea50cf3594aa08f3e875d0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (2be711191a6d25be)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (2be711191a6d25be)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 838KB
          • SHA256 3fa1fe4a588015cc94eceb06867f16a5e562293139fbf6b36bde21dba478968d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (2be711191a6d25be)\app.config
          • Size 1KB
          • SHA256 b3369f06d13bca8a10e0870cabd470c48734cd10604ff8a77eb3de17a608f6c4
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (2be711191a6d25be)\system.config
          • Size 974B
          • SHA256 95457d7d9b42737d35953526d89c36a49d9c681c972af05af5ac13c4ee5bb8c0
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 91d753f140351252586bdb9f09f863be874cac37ebf278b269d2711c940f912f
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 ee09d28a61cf6899ae48a0d7d18c0bc476ad048deb6912ebeb17394488be1025
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 acc7212739049171910d634148a5ef6da120900d5af0cb307f93bb8c36b6ef56
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 f5a598ca86b4f8eeb7781fcf85604f501e02cf5c6e8c59f7e33f90791c72e9c6
          • 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

          MSID1E6.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSID1E6.tmp
          • Size 1.1MB
          • SHA256 cd6bccce073b2a5205840ec31c91df0d443cc57c68756de2c03e21db8e3fc157
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID1E6.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID1E6.tmp-\ScreenConnect.Core.dll
          • Size 562KB
          • SHA256 c51a2b5cb5054ec0136e332bf290c8af3392d7936b5137a07423df08ab33d264
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID1E6.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 432abf3a198ff64fb2c660eb06b2bb33a16cf69fd28d836cfcb65c43d37dc462
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID1E6.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 10933424536d53e397f651915f862c933199c50722943c236b020787b2e8f147
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSID35E.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID35E.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\2be711191a6d25be\ScreenConnect.ClientSetup.msi
          • Size 11.8MB
          • SHA256 c5ebfccbea6702568726fda232918cba81489ef6a0b2ec9d70ad9e8431878469
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIFE71.tmp

          • Path C:\Windows\Installer\MSIFE71.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (2be711191a6d25be)\user.config
          • Size 589B
          • SHA256 27e2aa8ce58a30af9343385ac57124f107c33f7fbfb47550d5fac5ff38c4dfd1
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (2be711191a6d25be)\user.config
          • Size 589B
          • SHA256 acda0958ba509235dfb42fdf19313b3cab75f1b8351413529de02b4d6cd9652f
          • MD5 SHA1 SHA512 TLSH

          memory/236-241-0x00000000015E0000-0x000000000169B000-memory.dmp

          memory/392-245-0x0000000002D80000-0x0000000002D87000-memory.dmp

          memory/392-93-0x0000000002D80000-0x0000000002D87000-memory.dmp

          memory/392-113-0x0000000000E80000-0x0000000000F3B000-memory.dmp

          memory/392-92-0x0000000000E80000-0x0000000000F3B000-memory.dmp

          memory/392-244-0x0000000000E80000-0x0000000000F3B000-memory.dmp

          memory/392-155-0x0000000000E80000-0x0000000000F3B000-memory.dmp

          memory/612-271-0x0000000001690000-0x000000000169C000-memory.dmp

          memory/1016-154-0x0000000001380000-0x000000000143B000-memory.dmp

          memory/1248-240-0x00000000015A0000-0x000000000165B000-memory.dmp

          memory/1280-247-0x0000000002AE0000-0x0000000002AFA000-memory.dmp

          memory/1280-234-0x0000000002B50000-0x0000000002BBA000-memory.dmp

          memory/1280-252-0x0000000002A50000-0x0000000002A5C000-memory.dmp

          memory/1280-246-0x0000000002A90000-0x0000000002AAA000-memory.dmp

          memory/1280-243-0x000000001BFF0000-0x000000001C178000-memory.dmp

          memory/1280-233-0x0000000000A00000-0x0000000000AAA000-memory.dmp

          memory/1280-238-0x000000001BCB0000-0x000000001BE60000-memory.dmp

          memory/1280-237-0x000000001BA60000-0x000000001BAF4000-memory.dmp

          memory/1876-248-0x000001F1B2750000-0x000001F1B275C000-memory.dmp

          memory/2056-121-0x0000000000DA0000-0x0000000000E5B000-memory.dmp

          memory/2056-116-0x0000000000DA0000-0x0000000000E5B000-memory.dmp

          memory/2056-87-0x0000000004F80000-0x0000000004FA8000-memory.dmp

          memory/2056-95-0x0000000000DA0000-0x0000000000E5B000-memory.dmp

          memory/2260-157-0x00000000011A0000-0x000000000125B000-memory.dmp

          memory/2260-242-0x00000000011A0000-0x000000000125B000-memory.dmp

          memory/2260-94-0x00000000011A0000-0x000000000125B000-memory.dmp

          memory/2260-115-0x00000000011A0000-0x000000000125B000-memory.dmp

          memory/3116-250-0x0000000003D30000-0x0000000003D67000-memory.dmp

          memory/3116-219-0x0000000003D70000-0x0000000003DB1000-memory.dmp

          memory/3116-251-0x0000000004E20000-0x0000000004E84000-memory.dmp

          memory/3116-217-0x0000000003FF0000-0x0000000004082000-memory.dmp

          memory/3116-221-0x00000000041E0000-0x00000000042B5000-memory.dmp

          memory/3116-249-0x0000000000B70000-0x0000000000B7B000-memory.dmp

          memory/3116-212-0x0000000003CE0000-0x0000000003D30000-memory.dmp

          memory/3116-199-0x0000000001500000-0x000000000151A000-memory.dmp

          memory/3116-205-0x0000000003B80000-0x0000000003C14000-memory.dmp

          memory/3116-209-0x0000000003DD0000-0x0000000003F80000-memory.dmp

          memory/3116-216-0x0000000003F80000-0x0000000003FEA000-memory.dmp

          memory/3116-274-0x0000000004E20000-0x0000000004E84000-memory.dmp

          memory/4400-42-0x00000000033D0000-0x00000000033FE000-memory.dmp

          memory/4400-46-0x0000000003410000-0x000000000341C000-memory.dmp

          memory/4400-60-0x0000000001520000-0x00000000015DB000-memory.dmp

          memory/4400-54-0x0000000005AF0000-0x0000000005CA0000-memory.dmp

          memory/4400-50-0x00000000058A0000-0x0000000005934000-memory.dmp

          memory/4884-11-0x0000000001D20000-0x0000000001D6A000-memory.dmp

          memory/4884-1-0x0000000003770000-0x0000000003778000-memory.dmp

          memory/4884-2-0x00000000035D0000-0x00000000035E0000-memory.dmp

          memory/4884-5-0x0000000005DB0000-0x0000000005DD8000-memory.dmp

          memory/4884-3-0x0000000003790000-0x000000000379C000-memory.dmp

          memory/4884-7-0x0000000006550000-0x0000000006AF6000-memory.dmp

          memory/4884-6-0x0000000005DE0000-0x0000000005F90000-memory.dmp

          memory/4884-8-0x00000000035D0000-0x00000000035E0000-memory.dmp

          memory/4884-0-0x00000000035D0000-0x00000000035E0000-memory.dmp

          memory/4884-4-0x0000000005D00000-0x0000000005D94000-memory.dmp