Analysis

  • max time kernel
    148s
  • max time network
    124s
  • 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, 14:08

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample261102-rfwtxatzht
  • SHA256 881cc301cca5bd617ff6add7d9ff037ac1969dea02f70c3e6692c24ed27aa593
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 3 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
  • 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 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.

  • Modifies data under HKEY_USERS 8 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 6 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 9 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⤵
    • Badlisted process makes network request
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:5132
  • 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:2420
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding E56B722818373BE51A9509F9BFAA66F7 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1048
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI4973.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240732843 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2960
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI5098.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240734390 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:6092
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI57FC.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240736281 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4336
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4644
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 24855DA1541FF3B4847703CEB91FC75E
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1908
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 7033EA3DA8B18DF552EC3D481E148B57 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2448
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5900
    • C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.ClientService.exe" "?y=Guest&h=instance-sr54lz-relay.screenconnect.com&p=443&s=d9dd17c8-4793-472e-b8c2-67ad053142c3&k=BgIAAACkAABSU0ExAAgAAAEAAQB5o65hSsBj4%2f33TA4MSptULbKW8Ht6HUy4jpAXTO3qIPhPVrtOn70niSN7yNft2Hu%2bG9UbRJx2611sdRUlieXCC4C6qK2BBWX9xvg9IPdqvE5Nse5KI58u7aj%2bd3K0%2bClj0LVdBO5emaGUHCviO94VOdpz01yxXu4AnrOfWLDhMhfb7lZYWc3jRi3zwksqgp1q07xyUXZdIDtZeTmHBJcSOIS2AG12i0Ef2%2fVE2yZcS%2b3CGsRI0uR6jlzWQexAsMeAHgPZYIw2tCL9mwf3tVlGFJ0Hi0uLnX36FiARZFHsV%2fRsKtmmKeTYKBt3s7rDAvb5aErMb5FgN4BAs%2b6ezvvl&c=&c=screen%20connect&c=&c=&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:3260
      • C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.WindowsClient.exe" "RunRole" "80db10c6-2162-4dee-b343-8468a3e6d77f" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:5240
      • C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.WindowsClient.exe" "RunRole" "d25fa425-8971-4ece-a289-5d8cb221e1c9" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:6020

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e599ad0.rbs

          • Path C:\Config.Msi\e599ad0.rbs
          • Size 214KB
          • SHA256 0e660e07eed6eb6b76ac637ab246810e14967ebd02b2a5d300e9c9d6295ce365
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\Client.en-US.resources
          • Size 65KB
          • SHA256 bd8901dd3666277f6d7aa1f4118ad53f5d4229c5d9f67f94e635bf2add3731dd
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.Client.dll
          • Size 413KB
          • SHA256 be1e3522a20c244b3e20b4f7bc2fc736b6103c930d6cf8366e0bb97cb82d5241
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 67f75a75bc19288cac0071e19e7af4463f2ecf4bb75fe13af80a4f0f57144253
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 bc19602c59b0ba4a7a99f791c87298df76d8d62f86a928e112dca285a88a5a77
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.Core.dll
          • Size 583KB
          • SHA256 91ae86fd5439c7d8a54b75cbb60c2ff9bdff84657b962d340d48cdf656c4928d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 9ddaf17f7f802e58c645d42184e0ac33dc755a885bc3637a7d837a4f6ae5fdea
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 89fd40ccc2e2be1bf140e748212922aa4010a7ef4b0465aca958c9d3417e0bdd
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\system.config
          • Size 960B
          • SHA256 d51e3a3828e61cf7293bd59bb870bc0eafce8fcf699fcd2f90451710ac61338e
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 32308105d00835c913e0e77ddfda1c4185f680a67e14a04c062a07f67a1b44c6
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 b28be5dc433c00b29a91f956203506c195c2827a3e815c4fc7c28256c7b02fe3
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 51f269ac2d566c6feba0d0390ca25d1e39345f82a84274e620e6271d51b9798f
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 dc9533d2bdd5ea134ae62362ad3b66578cd4be0081494fc9892dc9721539f122
          • MD5 SHA1 SHA512 TLSH

          MSI4973.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4973.tmp
          • Size 1.1MB
          • SHA256 d39e53d74c6840d331b91b9c949db26f7c93a824e9fb104c532346a8c465b6e2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4973.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4973.tmp-\ScreenConnect.Core.dll
          • Size 573KB
          • SHA256 399ab0c1bcf2bf0c7618066d676b6958c2a5f4fed2d8f769f0eeea5492720e4f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4973.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 f35f007dcb154d0346745309630b8cc21fe49638e76dc8dd77a3c62cb0aa754a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4973.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 4c281797c351fed77890634006a51bc3a6c60efa4c831fe21934353f304cdf61
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5098.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5098.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 7fcba418fd772a38e420238d49e8301f23caf47eadcef400ecab8738813d9694
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI9FB2.tmp

          • Path C:\Windows\Installer\MSI9FB2.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e599ad1.msi

          • Path C:\Windows\Installer\e599ad1.msi
          • Size 9.8MB
          • SHA256 881cc301cca5bd617ff6add7d9ff037ac1969dea02f70c3e6692c24ed27aa593
          • MD5 SHA1 SHA512 SSDEEP TLSH

          jqnn4pql.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (b34f713f8ab71521)\jqnn4pql.newcfg
          • Size 683B
          • SHA256 2f648c9830d1e17d79a752d9d95ff55c13b51b640b74ec302e700f5bb7060f4d
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (b34f713f8ab71521)\user.config
          • Size 520B
          • SHA256 ea9285946b6e71dfbe0a5e2e3c9f1f56e0f0c5d7e256c2a5f9294acad0a8eaee
          • MD5 SHA1 SHA512 TLSH

          z0qoxdd5.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (b34f713f8ab71521)\z0qoxdd5.newcfg
          • Size 881B
          • SHA256 0525cf2ed4980b80b0ea00589814e51f0a4a37abeb52a113783d2844d91c814d
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 5673699defa934ac154dfc36cb8f4ac66815cea7b5b786381ed8cea78efb4855
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {26182558-eac1-4c53-bba3-713c4a19ecc1}_OnDiskSnapshotProp

          • Path \??\Volume{804c0bee-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{26182558-eac1-4c53-bba3-713c4a19ecc1}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 152add7f6f41f63392e7c8a7dd22d9d8500172aa5a1d6c480038554bcd02fd7c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/2960-31-0x0000000005F10000-0x0000000005F1C000-memory.dmp

          memory/2960-27-0x0000000005ED0000-0x0000000005EFE000-memory.dmp

          memory/2960-40-0x00000000069D0000-0x0000000006F8A000-memory.dmp

          memory/2960-35-0x0000000006010000-0x00000000060A6000-memory.dmp

          memory/2960-39-0x0000000006260000-0x0000000006410000-memory.dmp

          memory/3260-159-0x0000000003E00000-0x0000000003E96000-memory.dmp

          memory/3260-152-0x0000000001890000-0x00000000018AA000-memory.dmp

          memory/3260-197-0x00000000042A0000-0x000000000430C000-memory.dmp

          memory/3260-202-0x00000000045A0000-0x0000000004676000-memory.dmp

          memory/3260-175-0x0000000004040000-0x0000000004090000-memory.dmp

          memory/3260-200-0x0000000003ED0000-0x0000000003F11000-memory.dmp

          memory/3260-163-0x00000000040F0000-0x00000000042A0000-memory.dmp

          memory/3260-198-0x00000000043B0000-0x0000000004442000-memory.dmp

          memory/5240-219-0x0000000000610000-0x00000000006C0000-memory.dmp

          memory/5240-220-0x0000000002890000-0x00000000028FC000-memory.dmp

          memory/5240-221-0x000000001B690000-0x000000001B726000-memory.dmp

          memory/5240-222-0x000000001B8E0000-0x000000001BA90000-memory.dmp

          memory/5240-223-0x00000000027F0000-0x000000000280A000-memory.dmp

          memory/5240-224-0x000000001BC20000-0x000000001BDA8000-memory.dmp

          memory/6092-70-0x0000000005AD0000-0x0000000005AF8000-memory.dmp