Analysis

  • max time kernel
    149s
  • max time network
    141s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    20/10/2026, 18:12

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 12.2MB
  • Sample261020-ws8rfscz2s
  • SHA256 78f3fed0bb4d16b22717ae79a25cdba9e056e380f8ae6313b3f3864a3b77e0ab
  • 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.

  • 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
  • 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 16 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).

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 6 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • 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 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 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:2656
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.5.9742\1bf55173e8021c8b\ScreenConnect.ClientSetup.msi" SC_EXE_PATH="C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe"
      2⤵
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      PID:1920
  • 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:1224
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 258C56A3744B9D91A6D06CF22113DA64 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2564
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI7630.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240744078 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3280
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI7825.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240744500 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • Reads the TCP/IP host and domain name from the registry
        • System Location Discovery: System Language Discovery
        PID:5564
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI7F89.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240746468 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2268
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:5904
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 68FCB883C69226E19FF976D875E2CE6F
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:684
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 7525243BDCC83988B0FD7D5F79B2DB17 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1756
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1088
    • C:\Program Files (x86)\ScreenConnect Client (1bf55173e8021c8b)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (1bf55173e8021c8b)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-pq2i0q-relay.screenconnect.com&p=443&s=cf493c43-26b8-49de-bc7f-dad468eba9ba&k=BgIAAACkAABSU0ExAAgAAAEAAQCFw3Lex7P0qb9EwBGyQn7nh8ebl1J5aN2uh8wLGld3fAHvw2yNhFuRVSBYgMU8QlQGR6Sbl2pXN1Wmv3ewOCM%2bkYcoKfG0rsjl5niYdhHJqx5MSHUX0SDqzM%2fhVMSlvsS7y7S4QE0IwuLmtmUfpE7jnyMWANUgrfk8msxxv3sRb5Zvg%2b4viOl%2f2T%2fH6hcIoBmMN5vgjRXnhOALW8EoyLB2WM3Shc%2bPSV6KGlOpCewZImQESIxQ5ACbthpSDeJ9XdDEAGVss%2fAIDXpo8qGRMeIYved%2fgzphT6iQ42PavRbPfGYY6rzWwG%2fw5oOGjo0XvD9uaI13jgz17I4vL0vACj24&c=32.32&c=1&c=1&c=1&c=&c=&c=&c="
      1⤵
      • Sets service image path in registry
      • Drops file in System32 directory
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3496
      • C:\Program Files (x86)\ScreenConnect Client (1bf55173e8021c8b)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (1bf55173e8021c8b)\ScreenConnect.WindowsClient.exe" "RunRole" "6e36b837-d5ca-4021-a627-60895fd0d17a" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:5548
      • C:\Program Files (x86)\ScreenConnect Client (1bf55173e8021c8b)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (1bf55173e8021c8b)\ScreenConnect.WindowsClient.exe" "RunRole" "99c2dde4-b50e-48be-8e8f-1ad053a3486c" "System"
        2⤵
        • Executes dropped EXE
        • Reads the TCP/IP host and domain name from the registry
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4508

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e59c9cf.rbs

          • Path C:\Config.Msi\e59c9cf.rbs
          • Size 214KB
          • SHA256 2f0fc73fec47408bfcfc1aaa332df7d1f06dbcf1b7b5cdde162c8aabea7ef250
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (1bf55173e8021c8b)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (1bf55173e8021c8b)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (1bf55173e8021c8b)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 27e873d0fceefdd1a12ca77e3bbecec2ece7acdba433b47dca102c35e1c5896c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (1bf55173e8021c8b)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 78fa9cf69577f6990275c7c472f7114f9d0c85e660f3b9c81b085fc3cfbc8673
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (1bf55173e8021c8b)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 5956f9afb3ba610c38b2cfda88dd15be98783963769a12020c93ce05e749b3c3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (1bf55173e8021c8b)\ScreenConnect.Core.dll
          • Size 582KB
          • SHA256 4eab8752d05cd31bafd07edde7d18061cb63eea99af3132460e6dc08bb5f9e73
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (1bf55173e8021c8b)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ec4de5e6e9c079a30a5780d79ee662e0a4c6d009f0e3f911edc560973fb17d1e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (1bf55173e8021c8b)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (1bf55173e8021c8b)\ScreenConnect.WindowsClient.exe
          • Size 685KB
          • SHA256 2763b953657e3c4d6b2f952218a1e1963bcd6971f0b1102d99bb7efea04ceb29
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (1bf55173e8021c8b)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (1bf55173e8021c8b)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 7511e679597572782241ff989c065c02f9f5a12ab37290b69a27226eda57ce75
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (1bf55173e8021c8b)\system.config
          • Size 962B
          • SHA256 cc6270fd43f6ce11ed3d6819a59f359e2104ef285e963d1b6217e9503dff33e3
          • MD5 SHA1 SHA512 TLSH

          MSI7630.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7630.tmp
          • Size 1.1MB
          • SHA256 400ff5b9a4439339876282909b23c397ffa208f4bcf64460fa2521284acf0b6e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7630.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7825.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7825.tmp-\ScreenConnect.Core.dll
          • Size 572KB
          • SHA256 74f2d225b492eb77a5654bcaafec5162d0c5f72de884daa4c32daf54e2bff3d7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7825.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 2022f13b1f562d3cbef3a3926f0370a2de64e57ff281a121f90001a47499a356
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7825.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 93f910f732855000861c1b4e6c55a2dee0a8cbb2172d89c7a2bc99053746c193
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7825.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 361bbc692084841e4c8d22c89ca89c711d0fe17bc8759241736531a2f28de25b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.5.9742\1bf55173e8021c8b\ScreenConnect.ClientSetup.msi
          • Size 9.8MB
          • SHA256 31e756c907ed6e85968052fc2f9f2d3143b54df930a6bfa6c482eeb30ff26377
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSICFEA.tmp

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

          1vgqllvb.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (1bf55173e8021c8b)\1vgqllvb.newcfg
          • Size 884B
          • SHA256 d6379da9c1f8c3b6be773e7e2562a67ddb43cae9943e9390cbdfb3a3d0243b30
          • MD5 SHA1 SHA512 TLSH

          slwonuec.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (1bf55173e8021c8b)\slwonuec.newcfg
          • Size 683B
          • SHA256 8d871c7b893ca340c884bcaf453732b289f82dfb222055bb08a7d1509a109d63
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (1bf55173e8021c8b)\user.config
          • Size 520B
          • SHA256 bc969455cd065f8a377161e6d0ec4898b1fa14dfaa0b8bc40abe5eee86212a6e
          • MD5 SHA1 SHA512 TLSH

          memory/2656-0-0x00000000750C2000-0x00000000750C3000-memory.dmp

          memory/2656-2-0x0000000001DC0000-0x0000000001DCC000-memory.dmp

          memory/2656-1-0x0000000001D90000-0x0000000001D98000-memory.dmp

          memory/2656-11-0x00000000750B0000-0x000000007586C000-memory.dmp

          memory/2656-3-0x0000000005C90000-0x0000000005D26000-memory.dmp

          memory/2656-6-0x00000000750B0000-0x000000007586C000-memory.dmp

          memory/2656-4-0x0000000005D20000-0x0000000005D48000-memory.dmp

          memory/2656-10-0x00000000750B0000-0x000000007586C000-memory.dmp

          memory/2656-5-0x0000000005D50000-0x0000000005F00000-memory.dmp

          memory/2656-7-0x00000000750B0000-0x000000007586C000-memory.dmp

          memory/2656-8-0x00000000064C0000-0x0000000006A7A000-memory.dmp

          memory/3280-44-0x00000000061C0000-0x0000000006370000-memory.dmp

          memory/3280-32-0x0000000003E80000-0x0000000003EAE000-memory.dmp

          memory/3280-40-0x0000000005F70000-0x0000000006006000-memory.dmp

          memory/3280-36-0x0000000003EB0000-0x0000000003EBC000-memory.dmp

          memory/3496-165-0x0000000004630000-0x0000000004680000-memory.dmp

          memory/3496-151-0x0000000001EE0000-0x0000000001EFA000-memory.dmp

          memory/3496-200-0x0000000004BB0000-0x0000000004C86000-memory.dmp

          memory/3496-161-0x0000000004690000-0x0000000004840000-memory.dmp

          memory/3496-198-0x0000000004840000-0x0000000004881000-memory.dmp

          memory/3496-157-0x00000000043F0000-0x0000000004486000-memory.dmp

          memory/3496-195-0x00000000048B0000-0x000000000491C000-memory.dmp

          memory/3496-196-0x00000000049C0000-0x0000000004A52000-memory.dmp

          memory/5548-220-0x0000000000080000-0x0000000000130000-memory.dmp

          memory/5548-221-0x0000000002410000-0x000000000247C000-memory.dmp

          memory/5548-222-0x000000001B110000-0x000000001B1A6000-memory.dmp

          memory/5548-223-0x000000001B360000-0x000000001B510000-memory.dmp

          memory/5548-224-0x0000000000AC0000-0x0000000000ADA000-memory.dmp

          memory/5548-225-0x000000001B6A0000-0x000000001B828000-memory.dmp

          memory/5564-74-0x0000000005640000-0x0000000005668000-memory.dmp