Analysis

  • max time kernel
    150s
  • max time network
    145s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    02/11/2026, 12:25

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 12.2MB
  • Sample261102-plxmaatthx
  • SHA256 85d5318c26815c7b29e53bbd583aed4bf37e398c6e8a277f5f551e4385324d8d
  • 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 4 IoCs
  • Loads dropped DLL 50 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • 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 10 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:3188
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.7.6.9783\4ea5565506813589\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:3892
  • 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:5208
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 1B3CB9D468B32A532779E471D0AAC849 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3244
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIAB2A.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240757718 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2640
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIB08A.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240758968 10 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:1800
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIB677.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240760484 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3552
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2716
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding D9717945D7761BD9619BD93AA9388C5E
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1128
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 4D855E1E18FA0CBD9277CFA88E5673A4 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2476
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3972
    • C:\Program Files (x86)\ScreenConnect Client (4ea5565506813589)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (4ea5565506813589)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-a3n7rq-relay.screenconnect.com&p=443&s=f804c1ed-a6f3-443e-8786-eab506401c1c&k=BgIAAACkAABSU0ExAAgAAAEAAQBdQNVL6QYfwtLOy1VNLe4DWy4qQV1omaZpuDpXskjftGuWss0hN2AgwzicE9dKxLTAxf1FsUWKIXX7mIs2zubf3l6sHeC9slesxsuvm7zw4fNshmTEm9hXcdUuut3rBWVC4iWTSys7h6aJdoI3mWQkfYEplHEy2c1ZMfsVxllCeJVmncdN38vDyPUWcwufX7f1ljZB4qMSxoIwzfyJlhXoDkOFn45Use3jdfPLH7anQ8ASaC8Cc4BEzf2yR0pxrBeCAdSA1fG8btcKR5s1BLQS6oE11zafY9jhxiQJtI7RsnekoG4PYbf4aQTVJcPBprL6isbKxCx9pJVAHKf5WLil"
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:4104
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4104 -s 1336
        2⤵
        • Program crash
        PID:2632
    • C:\Program Files (x86)\ScreenConnect Client (4ea5565506813589)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (4ea5565506813589)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-a3n7rq-relay.screenconnect.com&p=443&s=f804c1ed-a6f3-443e-8786-eab506401c1c&k=BgIAAACkAABSU0ExAAgAAAEAAQBdQNVL6QY%2fwtLOy1VNLe4DWy4qQV1omaZpuDpXskj%2ftGuWss0hN2AgwzicE9dKxLTAxf1FsUWKIXX7mIs2zubf3l6sHeC9slesxsuvm7zw4fNshmTEm9hXcdUuut3rBWVC4iWTSys7h6aJdoI3mWQk%2fYEplHEy2c1ZMfsVxllCeJVmncdN38vDyPUWcwu%2fX7%2f1ljZB4qMSxoIwzfyJlhXoDkOFn45Use3jd%2fPLH7anQ8ASaC8Cc4BEzf2yR0pxrBeCAdSA1%2fG8btcKR5s1BLQS6oE11za%2fY9jhxiQJtI7RsnekoG4PYb%2f4aQTVJcPBprL6isbKxCx9pJVAHK%2f5WLil"
      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:3584
      • C:\Program Files (x86)\ScreenConnect Client (4ea5565506813589)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (4ea5565506813589)\ScreenConnect.WindowsClient.exe" "RunRole" "f729b68c-b7ed-4a90-8bc2-8f1873c330da" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:5816
      • C:\Program Files (x86)\ScreenConnect Client (4ea5565506813589)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (4ea5565506813589)\ScreenConnect.WindowsClient.exe" "RunRole" "c76d5cf3-b70d-483e-a5cf-257cd19eeb18" "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:3292
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4104 -ip 4104
      1⤵
        PID:4608

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e5a0c47.rbs

            • Path C:\Config.Msi\e5a0c47.rbs
            • Size 214KB
            • SHA256 678d48655969e39a2560b831f1fe89f3f7fa8ec296858b5aee4fb94662be39b8
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (4ea5565506813589)\ScreenConnect.Client.dll
            • Size 413KB
            • SHA256 be1e3522a20c244b3e20b4f7bc2fc736b6103c930d6cf8366e0bb97cb82d5241
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (4ea5565506813589)\ScreenConnect.ClientService.dll
            • Size 92KB
            • SHA256 67f75a75bc19288cac0071e19e7af4463f2ecf4bb75fe13af80a4f0f57144253
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (4ea5565506813589)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 bc19602c59b0ba4a7a99f791c87298df76d8d62f86a928e112dca285a88a5a77
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (4ea5565506813589)\ScreenConnect.Core.dll
            • Size 583KB
            • SHA256 91ae86fd5439c7d8a54b75cbb60c2ff9bdff84657b962d340d48cdf656c4928d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (4ea5565506813589)\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 9ddaf17f7f802e58c645d42184e0ac33dc755a885bc3637a7d837a4f6ae5fdea
            • MD5 SHA1 SHA512 SSDEEP TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (4ea5565506813589)\system.config
            • Size 964B
            • SHA256 26c4bb1863942b67ca51d23358d2c2bce44d5e3c338267fc3ac8c0608de6f0e4
            • MD5 SHA1 SHA512 TLSH

            MSIAB2A.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSIAB2A.tmp
            • Size 1.1MB
            • SHA256 d39e53d74c6840d331b91b9c949db26f7c93a824e9fb104c532346a8c465b6e2
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIAB2A.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIAB2A.tmp-\ScreenConnect.Core.dll
            • Size 573KB
            • SHA256 399ab0c1bcf2bf0c7618066d676b6958c2a5f4fed2d8f769f0eeea5492720e4f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIAB2A.tmp-\ScreenConnect.InstallerActions.dll
            • Size 24KB
            • SHA256 f35f007dcb154d0346745309630b8cc21fe49638e76dc8dd77a3c62cb0aa754a
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIAB2A.tmp-\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 4c281797c351fed77890634006a51bc3a6c60efa4c831fe21934353f304cdf61
            • MD5 SHA1 SHA512 SSDEEP TLSH

            CustomAction.config

            • Path C:\Users\Admin\AppData\Local\Temp\MSIB08A.tmp-\CustomAction.config
            • Size 234B
            • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIB08A.tmp-\ScreenConnect.WindowsInstaller.dll
            • Size 137KB
            • SHA256 7fcba418fd772a38e420238d49e8301f23caf47eadcef400ecab8738813d9694
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientSetup.msi

            • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.7.6.9783\4ea5565506813589\ScreenConnect.ClientSetup.msi
            • Size 9.8MB
            • SHA256 08fbc029745b324c672b2728b64265cd55005058b37cae3e3abe4d6a54777302
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSI13A9.tmp

            • Path C:\Windows\Installer\MSI13A9.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            0nlb25am.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (4ea5565506813589)\0nlb25am.newcfg
            • Size 683B
            • SHA256 a163a698951d3546669cf43c6a11dd7a9192ad632749ab9ce2b8db86cdf54125
            • MD5 SHA1 SHA512 TLSH

            44t2fftl.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (4ea5565506813589)\44t2fftl.newcfg
            • Size 882B
            • SHA256 e2d0766e2b84b11d81aba82d32e225865b4361882152d4a3c38e08e45adb3b4a
            • MD5 SHA1 SHA512 TLSH

            user.config

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (4ea5565506813589)\user.config
            • Size 520B
            • SHA256 2a95ddc5eeab871595f08dbe15baa0891b576d0fc196a4198b3c519ccf386bdf
            • MD5 SHA1 SHA512 TLSH

            memory/1800-75-0x0000000005290000-0x00000000052B8000-memory.dmp

            memory/2640-33-0x00000000040A0000-0x00000000040CE000-memory.dmp

            memory/2640-37-0x0000000004060000-0x000000000406C000-memory.dmp

            memory/2640-41-0x0000000004170000-0x0000000004206000-memory.dmp

            memory/2640-45-0x00000000063D0000-0x0000000006580000-memory.dmp

            memory/3188-3-0x0000000005890000-0x0000000005926000-memory.dmp

            memory/3188-13-0x0000000074F30000-0x00000000756EC000-memory.dmp

            memory/3188-7-0x0000000006170000-0x000000000672A000-memory.dmp

            memory/3188-4-0x00000000033B0000-0x00000000033D8000-memory.dmp

            memory/3188-0-0x0000000074F42000-0x0000000074F43000-memory.dmp

            memory/3188-6-0x0000000005A00000-0x0000000005BB0000-memory.dmp

            memory/3188-5-0x0000000074F30000-0x00000000756EC000-memory.dmp

            memory/3188-1-0x00000000019A0000-0x00000000019A8000-memory.dmp

            memory/3188-8-0x0000000074F30000-0x00000000756EC000-memory.dmp

            memory/3188-11-0x0000000074F30000-0x00000000756EC000-memory.dmp

            memory/3188-2-0x0000000003220000-0x000000000322C000-memory.dmp

            memory/3188-10-0x0000000074F30000-0x00000000756EC000-memory.dmp

            memory/3584-208-0x00000000041A0000-0x0000000004276000-memory.dmp

            memory/3584-205-0x0000000003EA0000-0x0000000003F0C000-memory.dmp

            memory/3584-206-0x0000000003FB0000-0x0000000004042000-memory.dmp

            memory/3584-207-0x0000000003E30000-0x0000000003E71000-memory.dmp

            memory/3584-184-0x0000000003C20000-0x0000000003C70000-memory.dmp

            memory/4104-172-0x0000000005990000-0x0000000005B40000-memory.dmp

            memory/4104-165-0x00000000056E0000-0x0000000005776000-memory.dmp

            memory/4104-152-0x0000000002FE0000-0x0000000002FFA000-memory.dmp

            memory/5816-227-0x0000000002890000-0x00000000028AA000-memory.dmp

            memory/5816-223-0x00000000006A0000-0x0000000000750000-memory.dmp

            memory/5816-225-0x000000001B3F0000-0x000000001B486000-memory.dmp

            memory/5816-226-0x000000001B9A0000-0x000000001BB50000-memory.dmp

            memory/5816-224-0x0000000002940000-0x00000000029AC000-memory.dmp

            memory/5816-228-0x000000001BCE0000-0x000000001BE68000-memory.dmp