Analysis

  • max time kernel
    148s
  • max time network
    147s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    21/07/2026, 20:09

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample260721-yxjn8stdpf
  • SHA256 b5ff9abad9f6e8f7db62511ace8a24f22532d6b093eca587c7d805b782fe000c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 2 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 12 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 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 SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 9 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⤵
    • Badlisted process makes network request
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:4136
  • 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:4560
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 975BA838C13BF6371BF998A1580F4A28 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1460
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI70D1.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240742953 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3156
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI7585.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240743828 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1864
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIB7A0.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240760812 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1080
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4192
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 3025FC5D6A892D335DE5D07814A90C7C
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1304
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 3DA5BCEC1D956D271DA148097DB5AAD3 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1648
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2108
    • C:\Program Files (x86)\ScreenConnect Client (76c9132b0d37d85c)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (76c9132b0d37d85c)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-l802qz-relay.screenconnect.com&p=443&s=5173eb1c-1393-4a21-a6df-43101e3f71e8&k=BgIAAACkAABSU0ExAAgAAAEAAQBJVGg6VMVdZV6%2fR2oRo8O1izZV7XRX4dRkbNwe5fpJeZVIQIAaGmCX81lIkhKJtglk6lMYS4bljRRZvQIftVoSUomd46Kr7wVKDjO6%2bMYf4aE0RMDIIl4dwGKGt6x0yAlhAmTKO6RWVv4ZHMtsKRIC74PW88gFDI%2bhQ5lSg4zuOumi8wb2YRXhw%2ftaE0rZD8JmN7%2fDM3VOA6MJuWfLDU2iRqRuN4YurfuuFNwW2x8lW5wisJM26OHDz98%2bqq2qJzfSeiMlZXPFoZQIGjIBR8GmKDPYF00fP9xGg714nbw0zpTGw%2fnaFHlka1%2fgK61WI74JN7OO2STjccF8LHcIll7L&c=&c=uxF&c=&c=&c=&c=&c=&c="
      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:1840
      • C:\Program Files (x86)\ScreenConnect Client (76c9132b0d37d85c)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (76c9132b0d37d85c)\ScreenConnect.WindowsClient.exe" "RunRole" "8ee70a06-96cb-4a29-8c10-ca5a12f5c27b" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4116
      • C:\Program Files (x86)\ScreenConnect Client (76c9132b0d37d85c)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (76c9132b0d37d85c)\ScreenConnect.WindowsClient.exe" "RunRole" "db176a42-fe2a-44dd-aaa0-5e6197d514cb" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:3352

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e59f786.rbs

          • Path C:\Config.Msi\e59f786.rbs
          • Size 214KB
          • SHA256 33289175c82eacb8d02a21b90059a49d8b34c5305db701de799b032408d28900
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (76c9132b0d37d85c)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (76c9132b0d37d85c)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (76c9132b0d37d85c)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 4010ea184982e71ad71e76b43266488c954f665324b89ef042cea9e463a60c9d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (76c9132b0d37d85c)\ScreenConnect.ClientService.dll
          • Size 91KB
          • SHA256 6e6aa42b107d3e82b7b7dc18a75eee3f09e9f268788c0a7edbbc617152adf178
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (76c9132b0d37d85c)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 a94ecccb5b88e3860d619fbb3b87ff4af6448240ab65b89d610f348d75e793f2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (76c9132b0d37d85c)\ScreenConnect.Core.dll
          • Size 577KB
          • SHA256 eedbd9ba4755f238af397c71b575082e18a31eabacc22abb4949f92fe991e169
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (76c9132b0d37d85c)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 305663a05c77c8058569a976db740aa2f20b66583f0381059633b628376570fc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (76c9132b0d37d85c)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (76c9132b0d37d85c)\ScreenConnect.WindowsClient.exe
          • Size 676KB
          • SHA256 f49ca44ae19ec33053d76aeca7136193095b6583888a0be063b8120c3c9226c7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (76c9132b0d37d85c)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (76c9132b0d37d85c)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 ce75ee1188726b49d46477166faac6f8715ca1aa4afc5b8a687fcbfcd541c0c2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (76c9132b0d37d85c)\system.config
          • Size 960B
          • SHA256 257ee3ca304283257d0a9cc86e43f39eb7bf244fb62f9efc08c301e6c4553937
          • MD5 SHA1 SHA512 TLSH

          MSI70D1.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI70D1.tmp
          • Size 1.1MB
          • SHA256 18bacfd2a7c95800b6279cb8731bf03c8bbb526f5bc3790254a8e06d7ceee8ad
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI70D1.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI70D1.tmp-\ScreenConnect.Core.dll
          • Size 567KB
          • SHA256 15fec18d3a8990cdb540897ede61227353165668048c001164fcd22233cc8390
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI70D1.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 c1142cc3ae09a7d3b5392539c29cbeb585543a38c93e37e55d82cbe0bb56d588
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI70D1.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ae3005e1ca932eccde09c479fde2ecf8ea2feeb908dec4f0c830eab671276454
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7585.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7585.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 7c27380976a5befc5a947e129eb464123f46d06cf0eb7f984ced921f36e1d0e7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIFC88.tmp

          • Path C:\Windows\Installer\MSIFC88.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e59f785.msi

          • Path C:\Windows\Installer\e59f785.msi
          • Size 9.8MB
          • SHA256 b5ff9abad9f6e8f7db62511ace8a24f22532d6b093eca587c7d805b782fe000c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          31fdzhho.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (76c9132b0d37d85c)\31fdzhho.newcfg
          • Size 883B
          • SHA256 f56191da967f224219b70d8a3dfb2a6c176267ec056fc7e8e4fb79012e17c80c
          • MD5 SHA1 SHA512 TLSH

          bf1ort1u.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (76c9132b0d37d85c)\bf1ort1u.newcfg
          • Size 883B
          • SHA256 d67192997adac98f809e9ebfa8edcc3ac7d3dd96a5a00a6756668d95abca9e36
          • MD5 SHA1 SHA512 TLSH

          uivl5m54.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (76c9132b0d37d85c)\uivl5m54.newcfg
          • Size 683B
          • SHA256 291b82d40798fb18b6160163dc5a50727894aa69fbb53a75331103cc87ffa9f6
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (76c9132b0d37d85c)\user.config
          • Size 520B
          • SHA256 a43c67837c565c40364d016f648196006303ce1c4aabc77717a4e66b9a5a400f
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 ce14da6bb34a56c31c7d31028977a2ec225ddc620a6782c0652daa19ff876f79
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {7543b0d9-66ad-47a4-a524-fc4a4d035377}_OnDiskSnapshotProp

          • Path \??\Volume{cb180e94-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{7543b0d9-66ad-47a4-a524-fc4a4d035377}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 696b025f452a821da7a94adde489eb745f3e272f8de0f7bcc39a71629457e562
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1840-164-0x0000000003FA0000-0x0000000003FF0000-memory.dmp

          memory/1840-184-0x0000000004330000-0x00000000043C2000-memory.dmp

          memory/1840-186-0x0000000003F60000-0x0000000003FA1000-memory.dmp

          memory/1840-183-0x0000000004220000-0x000000000428C000-memory.dmp

          memory/1840-188-0x0000000004520000-0x00000000045F6000-memory.dmp

          memory/1840-151-0x0000000004000000-0x00000000041B0000-memory.dmp

          memory/1840-141-0x0000000001720000-0x000000000173A000-memory.dmp

          memory/1840-147-0x0000000003DB0000-0x0000000003E44000-memory.dmp

          memory/1864-64-0x0000000005C30000-0x0000000005C58000-memory.dmp

          memory/3156-33-0x0000000005CA0000-0x0000000005E50000-memory.dmp

          memory/3156-21-0x00000000058E0000-0x000000000590E000-memory.dmp

          memory/3156-25-0x00000000058D0000-0x00000000058DC000-memory.dmp

          memory/3156-29-0x0000000005A50000-0x0000000005AE4000-memory.dmp

          memory/3156-34-0x0000000006410000-0x00000000069CA000-memory.dmp

          memory/4116-206-0x0000000000450000-0x00000000004FE000-memory.dmp

          memory/4116-208-0x000000001B150000-0x000000001B1BC000-memory.dmp

          memory/4116-212-0x000000001BA80000-0x000000001BC08000-memory.dmp

          memory/4116-211-0x0000000000D90000-0x0000000000DAA000-memory.dmp

          memory/4116-210-0x000000001B740000-0x000000001B8F0000-memory.dmp

          memory/4116-209-0x000000001B4F0000-0x000000001B584000-memory.dmp

          memory/4116-213-0x0000000002580000-0x00000000025C1000-memory.dmp