Analysis

  • max time kernel
    148s
  • max time network
    154s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    19/09/2026, 12:18

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 16.2MB
  • Sample260919-pg1hdaty4j
  • SHA256 085df3b8568d9f83144e173e20a4dfcd912eeab4a82fff694d08e2c81130260a
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 4 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.

  • 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 42 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 9 IoCs
  • Drops file in Program Files directory 16 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 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 7 IoCs
  • Suspicious use of SendNotifyMessage 5 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:3272
  • 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:3388
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 81B51A99B0CD2D479A65EEB95A2ACF5D C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1836
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI624A.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240739171 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2000
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI6940.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240740718 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:756
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIFCC7.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240778718 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:908
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3140
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding EE1161F93F195785D74EBCAC08164A93
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1524
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 0E03BD8C9DC8CED80B939777D1F74D57 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2220
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3024
    • C:\Program Files (x86)\ScreenConnect Client (e0e26fbdb67a2351)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (e0e26fbdb67a2351)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-i5lcee-relay.screenconnect.com&p=443&s=92f4db40-8b0e-4b26-9e9a-0e076640087c&k=BgIAAACkAABSU0ExAAgAAAEAAQCFJCaHTp8ai%2fVgGbEOZ1WOYmK67ERJLUiQqq%2fbgC%2bWLK%2bOL3MMAenLqcLugSzwryW%2b%2b9jwE0q0J29PwklYZuVGF4hqDFUV%2bLorkDrRXkH6vkFaLcHjw7c36tGh%2bylXf%2bvS37hszUm0GMyGPJIdCzXe0GEe%2fK1HKRpeOgcZTInhQaIJ5zpuDOlBJLQpRIfrFkGa8AvHim80IPzkWBiDnHXaA9jVbD5ARcG8vBXKS35x1eOdYF%2fhKlroLdAipQ%2fCPradFlL9wd6VKj%2fauDU%2fkGmcVZ9TiHtXlAaPU19givkHP3KmA4NuCwpRb%2bRNtKdmefhGv1k4J7wsiTsTKxVBmZmQ"
      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:4640
      • C:\Program Files (x86)\ScreenConnect Client (e0e26fbdb67a2351)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (e0e26fbdb67a2351)\ScreenConnect.WindowsClient.exe" "RunRole" "5403d64f-7372-49f9-a989-d7c6a11dd6ce" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4604
      • C:\Program Files (x86)\ScreenConnect Client (e0e26fbdb67a2351)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (e0e26fbdb67a2351)\ScreenConnect.WindowsClient.exe" "RunRole" "d95cb4c1-3c33-440c-977c-e70d85b7d1ee" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4080

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5a475c.rbs

          • Path C:\Config.Msi\e5a475c.rbs
          • Size 214KB
          • SHA256 5485f13688da2c58fe23eca0d28ba0f90d8bddb7a91e42bff62e65c7d2f2ad30
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (e0e26fbdb67a2351)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (e0e26fbdb67a2351)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (e0e26fbdb67a2351)\ScreenConnect.Client.dll
          • Size 615KB
          • SHA256 787a02b1938e8c1ce52448b8779d2c9c47029664f97185177c2584e8f980abc4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (e0e26fbdb67a2351)\ScreenConnect.ClientService.dll
          • Size 176KB
          • SHA256 579fa008b8c96612163fd8a89a978140a652b3739867772df0711fca148705aa
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (e0e26fbdb67a2351)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 d887f20ec383d7ce3a5727856bf7fa68ceb972108b6d0a5dd9924707e820dc24
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (e0e26fbdb67a2351)\ScreenConnect.Core.dll
          • Size 1.3MB
          • SHA256 5b2d14e237485c0164d865d8a94f8a8bed28ab0db52c6a7ef99f7ebb9648d324
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (e0e26fbdb67a2351)\ScreenConnect.Windows.dll
          • Size 1.9MB
          • SHA256 88dd22f6f0ca70d10c64ca919b0d8b6d73e84c1d567d4b8d15b6e9a9b60d6d8f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (e0e26fbdb67a2351)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (e0e26fbdb67a2351)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 239377f4d2345d2a4ff6e3cbebd83c6edb06db4daea389159d19770a2dfcb80c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (e0e26fbdb67a2351)\system.config
          • Size 974B
          • SHA256 1e1e2084ebec90386fbd862ccd98d621f87cb5936b756543d3295fb3f17e74bd
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 cdc825074b837a1d47ab61bfbf38b3cf535446bf815177c2c0ddd3752afd9335
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 dd4629c3292399ef3874c0d7475a0072f06af29fedc13b1956a3cff10bab185b
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 49615aaafeda9c5421219ade839fdbcf2fdfe6083cbcede345612eae0461e67d
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 3be61a916563e4129a0fec47d96db5b92cf668e20b05de4c60f41f337a1d0e07
          • MD5 SHA1 SHA512 TLSH

          MSI624A.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI624A.tmp
          • Size 1.9MB
          • SHA256 1dabfa60015c186a4315f16d46d9e53435dc259c52843e73dac0d04be92f9a84
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI624A.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI624A.tmp-\ScreenConnect.Core.dll
          • Size 1.3MB
          • SHA256 e5fd82d18c2dcaadbfc4b72b56573e819cc3e8ee6406f2edb982cc073dc607bb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI624A.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 cf8505204b1458dac9cb3002fd5bbd5fac43c5b4702aa0153fb4b9a2cfcf954a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI624A.tmp-\ScreenConnect.Windows.dll
          • Size 1.8MB
          • SHA256 ed1b4eb6c24c85392f692bf5863d9ccb76575051bb605360961b9d7624a371c6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6940.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6940.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 390KB
          • SHA256 c469358d585fa9f1637a02d194e162e454d90b8dc7e4939f88b36e09b04a7a96
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI4D96.tmp

          • Path C:\Windows\Installer\MSI4D96.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e5a475b.msi

          • Path C:\Windows\Installer\e5a475b.msi
          • Size 16.2MB
          • SHA256 085df3b8568d9f83144e173e20a4dfcd912eeab4a82fff694d08e2c81130260a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          fhe5yiza.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (e0e26fbdb67a2351)\fhe5yiza.newcfg
          • Size 883B
          • SHA256 9e61f60ccf8ce0677aa4a70219f27158c729711af9ea242e659b5b2f84cef37d
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (e0e26fbdb67a2351)\user.config
          • Size 520B
          • SHA256 ea8200342520f13f7b4cd5b3d1266477159bb44c82fda057f832f71e9c42fea7
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (e0e26fbdb67a2351)\user.config
          • Size 683B
          • SHA256 3ce7054dd33bf8de3f0ae18d4bf999120dad31af77ff3f936e758895fde9945a
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 9402053dc4f1ea1b6653a1ce5e8b23d698a24413b78235f1350594e466a6f928
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {31c0a71e-7584-4c45-9a33-ee4759fddb84}_OnDiskSnapshotProp

          • Path \??\Volume{ed77d9b0-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{31c0a71e-7584-4c45-9a33-ee4759fddb84}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 c1e351149e51336b5fc667c816f7b55d3378aa196e766d47f4f5b13b52d7a6bd
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/756-70-0x0000000005EB0000-0x0000000005F18000-memory.dmp

          memory/2000-35-0x0000000005D00000-0x0000000005E5A000-memory.dmp

          memory/2000-40-0x00000000067E0000-0x0000000006D9A000-memory.dmp

          memory/2000-31-0x0000000002BA0000-0x0000000002BAC000-memory.dmp

          memory/2000-27-0x0000000002BB0000-0x0000000002BDE000-memory.dmp

          memory/2000-39-0x0000000006040000-0x0000000006220000-memory.dmp

          memory/4604-214-0x0000000000E90000-0x0000000001026000-memory.dmp

          memory/4604-216-0x000000001BCB0000-0x000000001BD4E000-memory.dmp

          memory/4604-220-0x0000000003210000-0x0000000003240000-memory.dmp

          memory/4604-219-0x000000001C6D0000-0x000000001C858000-memory.dmp

          memory/4604-218-0x000000001C4F0000-0x000000001C6D0000-memory.dmp

          memory/4604-217-0x000000001C1B0000-0x000000001C30A000-memory.dmp

          memory/4640-194-0x0000000004AD0000-0x0000000004B6E000-memory.dmp

          memory/4640-160-0x0000000004830000-0x000000000498A000-memory.dmp

          memory/4640-177-0x00000000049E0000-0x0000000004A30000-memory.dmp

          memory/4640-154-0x00000000045A0000-0x00000000045D0000-memory.dmp

          memory/4640-164-0x0000000004B70000-0x0000000004D50000-memory.dmp

          memory/4640-195-0x0000000004D50000-0x0000000004DE2000-memory.dmp

          memory/4640-199-0x0000000004F40000-0x0000000005016000-memory.dmp

          memory/4640-197-0x0000000004A30000-0x0000000004A71000-memory.dmp