Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    20/08/2026, 06:12

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample260820-gybatafl7x
  • SHA256 98fd04031af897a657b71eebc1a3d6576f78d52a497c11868fbbce1dda893fbf
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 4 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 2 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.

  • Modifies data under HKEY_USERS 9 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 6 IoCs
  • Suspicious use of SendNotifyMessage 4 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⤵
    • 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:5532
  • 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:5444
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 2B9D83C8DA06F6F5653FA19EE6BD67FC C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:472
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI3723.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240728171 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1992
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI3D8D.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240729531 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:6004
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI3A6C.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240794296 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:808
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:1228
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding A5E43AF7CC5308A56F0CD57903B4C128
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4728
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding B96D354B2F151116839EFA4FB0C42FAE E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2752
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4176
    • C:\Program Files (x86)\ScreenConnect Client (4582ce8bafc827e5)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (4582ce8bafc827e5)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-tta3mk-relay.screenconnect.com&p=443&s=8ff4baff-a958-478a-b904-a3dce216db9d&k=BgIAAACkAABSU0ExAAgAAAEAAQD9I2MVb%2f6tIKWOPLcAZsrZl4mktkg%2bNdOdUds10wZGieGBl3mmd1zSIzfKBnnYZIlmMBG59FjOhRVagt3qWNpvf8N5rUB5xUoG8%2fAKZY7mGbJTQwfenmXNse8wQIuq9Lr3fRXjL%2bTfr28JArmwg5dgoS9sMOcn6IcjFQaLybUdGAIFZWwwqoCjR5h7odLB6S6I9iFNIMGMbP9uvc%2fcdYupGpBTBLYxVvuqyDJQ7qFs%2f3d5F5XS8l7nGSzd7plitR6zEuzGQLsT758PbshwXiA788uyjCI471IyArr5c%2bUZXS9Guw%2bxPIp06tDLrIRLpmh6RLEdQANv41DoXX3ZKbHC"
      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:3248
      • C:\Program Files (x86)\ScreenConnect Client (4582ce8bafc827e5)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (4582ce8bafc827e5)\ScreenConnect.WindowsClient.exe" "RunRole" "d7382ccd-8598-4aa4-b710-5a6f52a10eb0" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:108

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5a9925.rbs

          • Path C:\Config.Msi\e5a9925.rbs
          • Size 214KB
          • SHA256 49d895ad40e4ec48382385489d08cd23977f78dccda5fd55fd071849166d3618
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (4582ce8bafc827e5)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (4582ce8bafc827e5)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (4582ce8bafc827e5)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 8e5531c2b302f9c95ed32ac7481d3535b6d51147257d317686c07ea1a9cb8362
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (4582ce8bafc827e5)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 ed32fe0d924959020cbef0534a7ba612e94263ccc74837475f3b5a6a726acad0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (4582ce8bafc827e5)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 16b4c273a25526e7262716ebe9d46480962347191a034595f18be740d9ce1e17
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (4582ce8bafc827e5)\ScreenConnect.Core.dll
          • Size 579KB
          • SHA256 f64cb7ab5f105c22348a22e02dd506ff45456884639fee0f322862112860af24
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (4582ce8bafc827e5)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 c50d6e8d93ed197dd0cfb647743b42a2a6a9289f6db04092f56cefd6d569663e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (4582ce8bafc827e5)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (4582ce8bafc827e5)\ScreenConnect.WindowsClient.exe
          • Size 678KB
          • SHA256 2ad8f126461607aad3fa31a41f1f39bc74f471fd84191b43e205610db2c4cf09
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (4582ce8bafc827e5)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (4582ce8bafc827e5)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 4868b7997b9b4260be2df752a81a750388243cdbea37e4d82a9e0101cd29d0c7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (4582ce8bafc827e5)\system.config
          • Size 960B
          • SHA256 c7589084d4671d8f94e04ebceeb7ad69e59ebd04fdb58cd3c284b43f414a5c5d
          • MD5 SHA1 SHA512 TLSH

          MSI3723.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3723.tmp
          • Size 1.1MB
          • SHA256 de867af8055f81b7691f12175deb4c4e7f3bf97130e51761ed02182b0496e16f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3723.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3723.tmp-\ScreenConnect.Core.dll
          • Size 569KB
          • SHA256 e92d94613443befebb55b08f80d10a2fdbfc58233e8dc95cfb4466fde12964f7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3723.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 d827d3575ca29f8a40ea5379c7df2b315fc72cbd93451de94e199740594b51bb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3723.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 320b89343e896a8d2ebf537861d800a9aca88245cc3b5616bb5bea5cc6797fbb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3D8D.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3D8D.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 dbf379b93127345a83282380aee634d0b70ec731acfeea76617c76e76fdc764f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI9FFB.tmp

          • Path C:\Windows\Installer\MSI9FFB.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e5a9924.msi

          • Path C:\Windows\Installer\e5a9924.msi
          • Size 9.8MB
          • SHA256 98fd04031af897a657b71eebc1a3d6576f78d52a497c11868fbbce1dda893fbf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          535tmhct.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (4582ce8bafc827e5)\535tmhct.newcfg
          • Size 882B
          • SHA256 27b45e422489c47828b2d3c25747401bd808d9a75da58172289dd91ec66cdbf0
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (4582ce8bafc827e5)\user.config
          • Size 882B
          • SHA256 cbb6b90d97ae073017646385fee3cb045898e93b0bd3b7529f497f2e30a8c043
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (4582ce8bafc827e5)\user.config
          • Size 520B
          • SHA256 34a7a7ba10c1115478a399af57b14a916f8fc6cfe63f7d01b7ddc0f238134427
          • MD5 SHA1 SHA512 TLSH

          w02vcroc.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (4582ce8bafc827e5)\w02vcroc.newcfg
          • Size 683B
          • SHA256 35e2a442fbea73201aee229d33fc1260eefedb1359321521533562e348ed7972
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 d1a37dcc5c387948ff1f9a83b744a2088bc40ed065ade15fd7d94a23c89e2ea5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {fd9fec09-ca4d-4980-a283-bcdb17b3299e}_OnDiskSnapshotProp

          • Path \??\Volume{c61fbfff-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{fd9fec09-ca4d-4980-a283-bcdb17b3299e}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 4fc93bfe2de9de8d943cdcf868ce7c069388293229fe61f90ae2156920a418fc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/108-209-0x000000001B410000-0x000000001B4A4000-memory.dmp

          memory/108-207-0x0000000000570000-0x000000000061E000-memory.dmp

          memory/108-213-0x000000001BB30000-0x000000001BCB8000-memory.dmp

          memory/108-212-0x0000000000E90000-0x0000000000EAA000-memory.dmp

          memory/108-211-0x000000001B980000-0x000000001BB30000-memory.dmp

          memory/108-208-0x0000000002840000-0x00000000028AC000-memory.dmp

          memory/1992-34-0x0000000005E80000-0x000000000643A000-memory.dmp

          memory/1992-33-0x0000000005710000-0x00000000058C0000-memory.dmp

          memory/1992-29-0x00000000054C0000-0x0000000005554000-memory.dmp

          memory/1992-25-0x0000000005410000-0x000000000541C000-memory.dmp

          memory/1992-21-0x00000000053E0000-0x000000000540E000-memory.dmp

          memory/3248-184-0x0000000004480000-0x00000000044EC000-memory.dmp

          memory/3248-152-0x0000000004210000-0x00000000043C0000-memory.dmp

          memory/3248-189-0x0000000004780000-0x0000000004856000-memory.dmp

          memory/3248-187-0x0000000004410000-0x0000000004451000-memory.dmp

          memory/3248-185-0x0000000004590000-0x0000000004622000-memory.dmp

          memory/3248-165-0x00000000043C0000-0x0000000004410000-memory.dmp

          memory/3248-142-0x0000000003EE0000-0x0000000003EFA000-memory.dmp

          memory/3248-148-0x0000000003FC0000-0x0000000004054000-memory.dmp

          memory/6004-64-0x0000000005A10000-0x0000000005A38000-memory.dmp