Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    04/06/2026, 00:22

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 12.8MB
  • Sample260604-apcc7af14v
  • SHA256 94d84c8c2d4690bdba97a5e543863e84d9e95218b7b955bb44ab4c65c166eb5e
  • 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 3 IoCs
  • Drops file in Program Files directory 19 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 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 2 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
    PID:3868
  • 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:2728
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 4BDF30D817BCE9580AA98560B58C6E8A C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3388
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI5109.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240669140 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4804
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4272
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 0027BA4646908AC9B31821E57DDB75D2
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2992
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 325960B9EB06D0433859F795DDB0DD87 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:228
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2864
    • C:\Program Files (x86)\ScreenConnect Client (8ec5ffaeab6819cc)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (8ec5ffaeab6819cc)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=relay.creativitymeetingpoint.com&p=8041&s=a4d01983-dc47-46cc-bc56-6ff91e46b544&k=BgIAAACkAABSU0ExAAgAAAEAAQBxF0IqF84DQ0dCOP6b%2fR6lprb64u%2bkC4TWJAJP7StZHXajvtAVig1Uh5UuqWiu0LO19eEMKqM9DNx1CI7uuOKBAF1lKGN77UGWEHK2E0iTHQEffT4P26rMEQFXLVt3SSLsHYSzckRtjwrxlnchv3%2bmwHfUCBCb8eqdhujuPLGU17OPSMkGu8qc8WhPP%2bK0GEUMpOM3NkYspu3pNzqw4e%2bfcK2Krd4b6MCGzfzNTLwIhKrO3Z%2b%2fOn5VMrgEZDU5wFd87ywXjqaqmz4Qpe1U3V2WF2vtlMg0pyq8kYvASBFmKjQQt6zgXzxhhKrSHo8em7mnnvbHNdS5dEwubknUZZbe"
      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:3840
      • C:\Program Files (x86)\ScreenConnect Client (8ec5ffaeab6819cc)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (8ec5ffaeab6819cc)\ScreenConnect.WindowsClient.exe" "RunRole" "fa606c1b-344e-4302-b8d5-48336e8193b3" "User"
        2⤵
        • Executes dropped EXE
        PID:764
      • C:\Program Files (x86)\ScreenConnect Client (8ec5ffaeab6819cc)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (8ec5ffaeab6819cc)\ScreenConnect.WindowsClient.exe" "RunRole" "6ff74d3e-bce3-4cf4-900b-41754c735b01" "System"
        2⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:3288

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e588876.rbs

          • Path C:\Config.Msi\e588876.rbs
          • Size 214KB
          • SHA256 3c377e356539dba7eb158e4ed992b9ba8038bd521b878323fa85c7e56309500c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (8ec5ffaeab6819cc)\Client.Override.en-US.resources
          • Size 227B
          • SHA256 38bdcc2ec25e7464dde7293b5a6ec64eea4b9d9f6fb8c36fdcc5677a6f55b721
          • MD5 SHA1 SHA512 TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (8ec5ffaeab6819cc)\Client.Override.resources
          • Size 8KB
          • SHA256 f391d852287b12a263812abc34d6545b1d6dba6500ec4bf1fb8982fe7aa21d27
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (8ec5ffaeab6819cc)\Client.en-US.resources
          • Size 48KB
          • SHA256 6a000a67799a071883b6e25f86d91c2c513aae0b34b3643be77e5b889335fb95
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (8ec5ffaeab6819cc)\Client.resources
          • Size 28KB
          • SHA256 95b299c8c163731707e8134946059a28c668c2b65b48f57eac2847dbe4beb63e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (8ec5ffaeab6819cc)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 6526705b685c2f221a6675118c73cba98c47d948169d81ea4544c3e3336b8f2b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (8ec5ffaeab6819cc)\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 319ba24115e64ea4b714caf4e88d3d5a658defd51d714c2291b9758466925281
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (8ec5ffaeab6819cc)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 f048400c23add8c75abe189393d33c873c02c74eeaf43d47b950c8d643763b35
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (8ec5ffaeab6819cc)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (8ec5ffaeab6819cc)\ScreenConnect.WindowsClient.exe
          • Size 593KB
          • SHA256 b80d07610b81bddb3d7f30a207a2e134b559e06b8440598a926f3a9c1d439218
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (8ec5ffaeab6819cc)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (8ec5ffaeab6819cc)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (8ec5ffaeab6819cc)\app.config
          • Size 1KB
          • SHA256 a203fcde97bbea157f0620429cfc017aa501e86f8f5b7aa6080579fe313404d1
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (8ec5ffaeab6819cc)\system.config
          • Size 952B
          • SHA256 1a721b9d0e269127938027349355177f4df8ba6b7b2d67265464d89c34f651ab
          • MD5 SHA1 SHA512 TLSH

          MSI5109.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5109.tmp
          • Size 1.0MB
          • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5109.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5109.tmp-\ScreenConnect.Core.dll
          • Size 538KB
          • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5109.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5109.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI89DD.tmp

          • Path C:\Windows\Installer\MSI89DD.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e588875.msi

          • Path C:\Windows\Installer\e588875.msi
          • Size 12.8MB
          • SHA256 94d84c8c2d4690bdba97a5e543863e84d9e95218b7b955bb44ab4c65c166eb5e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.6MB
          • SHA256 313fa80e3c84684501e4378383769f80cce667a3525c3d229b6dedeb0f1af984
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {25c81b2a-99e1-4e38-ba0b-12e72760153a}_OnDiskSnapshotProp

          • Path \??\Volume{a40cd035-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{25c81b2a-99e1-4e38-ba0b-12e72760153a}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 0288b10ae11d7c1a941b8985d00391cbbb8a5bc7cb7de4cb69a76fd9afd03646
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/764-122-0x000000001DE40000-0x000000001DFC8000-memory.dmp

          memory/764-118-0x0000000000230000-0x00000000002C8000-memory.dmp

          memory/764-124-0x000000001C3D0000-0x000000001C3E8000-memory.dmp

          memory/764-121-0x000000001CA50000-0x000000001CBFC000-memory.dmp

          memory/764-120-0x000000001C810000-0x000000001C89C000-memory.dmp

          memory/764-119-0x000000001C3F0000-0x000000001C426000-memory.dmp

          memory/764-123-0x00000000024B0000-0x00000000024C8000-memory.dmp

          memory/3840-95-0x0000000003D90000-0x0000000003DC6000-memory.dmp

          memory/3840-107-0x0000000004210000-0x00000000042E5000-memory.dmp

          memory/3840-105-0x0000000003F80000-0x0000000003FC1000-memory.dmp

          memory/3840-102-0x0000000004020000-0x00000000040B2000-memory.dmp

          memory/3840-89-0x0000000003D40000-0x0000000003D90000-memory.dmp

          memory/3840-76-0x0000000003AE0000-0x0000000003AF8000-memory.dmp

          memory/4804-18-0x00000000031D0000-0x00000000031FE000-memory.dmp

          memory/4804-22-0x0000000003210000-0x000000000321A000-memory.dmp

          memory/4804-26-0x00000000056A0000-0x000000000572C000-memory.dmp

          memory/4804-30-0x00000000058E0000-0x0000000005A8C000-memory.dmp

          memory/4804-31-0x0000000006040000-0x00000000065E6000-memory.dmp