Analysis

  • max time kernel
    149s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    18/08/2026, 06:20

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 12.2MB
  • Sample260818-g3682sysas
  • SHA256 602925ff97afc5533002425e97c4c4a83bb7e0dd3ea768664f24a149b405dd89
  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops file in System32 directory 10 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 13 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 42 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 9 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 WriteProcessMemory 10 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⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:764
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.5.3.9691\fad0126b84c4e762\ScreenConnect.ClientSetup.msi" SC_EXE_PATH="C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe"
      2⤵
      • Badlisted process makes network request
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:4356
  • 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:4740
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 6F63E7AD24F31D276918CC5DE01533AD C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4420
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI47D2.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240666859 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3840
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI4C86.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240667781 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4000
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI535D.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240669546 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2228
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4056
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 174C96458ED18B86658E469C56495F60
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1288
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding D20004BE59341B878BF7F9467333C323 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3216
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:768
    • C:\Program Files (x86)\ScreenConnect Client (fad0126b84c4e762)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (fad0126b84c4e762)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-b6jskd-relay.screenconnect.com&p=443&s=7fe43a76-6fca-4556-b7a9-190c5b035a0b&k=BgIAAACkAABSU0ExAAgAAAEAAQAVKgb3hxV6thwIsEMmZBlQ2hZAxWWMnT7pjFHqkOOfJ3%2bVuOlgfxHOwxpaVn%2bmxOJR%2fLJJ5GoyvhgM3ZW8y6F6RC%2fWBkS0ENslh1i20y5CSDTpl8KylDr77friWhW64Wico6vlWkuYoBjdPBLVS1x%2fmYttSwDLIaJJr7trCZ%2fvlFMhNv9efNxbCZRr4r%2f1sN%2bUR5%2bVyvS9MmSG5TGH4%2fRq2STHFCshgdCFV%2fcUmG7cUnITtTPNdcSAiroueil8M%2fO%2bzRDCtbQi%2flsXPSWQh8xC2S1dBt51Jr%2bI9VM5sK5KMvmqdCWyxl1U%2baYPamvZcNEvTnufclNSJHCV7r0Tgm7w"
      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:2448
      • C:\Program Files (x86)\ScreenConnect Client (fad0126b84c4e762)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (fad0126b84c4e762)\ScreenConnect.WindowsClient.exe" "RunRole" "431e8e84-42ed-4a91-8e2c-1e27429f9768" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2264
      • C:\Program Files (x86)\ScreenConnect Client (fad0126b84c4e762)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (fad0126b84c4e762)\ScreenConnect.WindowsClient.exe" "RunRole" "1eaeda80-d7b3-4902-9624-a1d3a429ab0d" "System"
        2⤵
        • Drops file in System32 directory
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:5024

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e589883.rbs

          • Path C:\Config.Msi\e589883.rbs
          • Size 214KB
          • SHA256 ea25373cd49bfa483fc9ea7b47f3dac97b00019599e95070f14a26f8c3eda16a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (fad0126b84c4e762)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (fad0126b84c4e762)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (fad0126b84c4e762)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 8e5531c2b302f9c95ed32ac7481d3535b6d51147257d317686c07ea1a9cb8362
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (fad0126b84c4e762)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 ed32fe0d924959020cbef0534a7ba612e94263ccc74837475f3b5a6a726acad0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (fad0126b84c4e762)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 16b4c273a25526e7262716ebe9d46480962347191a034595f18be740d9ce1e17
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (fad0126b84c4e762)\ScreenConnect.Core.dll
          • Size 579KB
          • SHA256 f64cb7ab5f105c22348a22e02dd506ff45456884639fee0f322862112860af24
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (fad0126b84c4e762)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 c50d6e8d93ed197dd0cfb647743b42a2a6a9289f6db04092f56cefd6d569663e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (fad0126b84c4e762)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (fad0126b84c4e762)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 4868b7997b9b4260be2df752a81a750388243cdbea37e4d82a9e0101cd29d0c7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (fad0126b84c4e762)\system.config
          • Size 976B
          • SHA256 bbb1c3f1437c57192dea085ea2b27e7f949aee27c826baaaa3d7b1c392bce12e
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 040aa01bab9bd0c671f566b733c51c71c09004746ecf5f8ba99dfb2ef7e0c0b1
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 0206281a958665fb40c4e54614c5ee1bea23d3c8046ced2ecb4fa7b28fc03294
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 597aaea894f1ea829c94e0320293f87f7e9c537fb61e319dc4dd698ca746ea22
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 88e20c0a8e39506b42e10a8e115bd99334c181ceb8e1139ff2c69e20c7ad45c0
          • MD5 SHA1 SHA512 TLSH

          rundll32.exe.log

          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\rundll32.exe.log
          • Size 746B
          • SHA256 ddebb6b1094dbef9e96754a74ebd4761d857864c9bd0b5f20a97259a6d7c8fe0
          • MD5 SHA1 SHA512 TLSH

          MSI47D2.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI47D2.tmp
          • Size 1.1MB
          • SHA256 de867af8055f81b7691f12175deb4c4e7f3bf97130e51761ed02182b0496e16f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI47D2.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI47D2.tmp-\ScreenConnect.Core.dll
          • Size 569KB
          • SHA256 e92d94613443befebb55b08f80d10a2fdbfc58233e8dc95cfb4466fde12964f7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI47D2.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 d827d3575ca29f8a40ea5379c7df2b315fc72cbd93451de94e199740594b51bb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI47D2.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 320b89343e896a8d2ebf537861d800a9aca88245cc3b5616bb5bea5cc6797fbb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4C86.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4C86.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 dbf379b93127345a83282380aee634d0b70ec731acfeea76617c76e76fdc764f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.5.3.9691\fad0126b84c4e762\ScreenConnect.ClientSetup.msi
          • Size 9.8MB
          • SHA256 68dd6680fcb734488afe8ffbbf65c463d6fc3bc8a90dae7260f51611878f3a61
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI9A96.tmp

          • Path C:\Windows\Installer\MSI9A96.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          35sffqdc.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (fad0126b84c4e762)\35sffqdc.newcfg
          • Size 683B
          • SHA256 4eea61ff07e4bf52f9563e0a503c83026ac2ba68c376157bf39b07607096d5e8
          • MD5 SHA1 SHA512 TLSH

          5ylr4oa3.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (fad0126b84c4e762)\5ylr4oa3.newcfg
          • Size 883B
          • SHA256 40044f3a9d242da42dcbc0ff69b073de5ce3f038fa3bc2e6540b9c7ef66e968a
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (fad0126b84c4e762)\user.config
          • Size 520B
          • SHA256 d7dcefdf4ee669838032919242e4dfaa3c23d6d853aa4159ff6af8f1dd5aa9c0
          • MD5 SHA1 SHA512 TLSH

          memory/764-2-0x0000000005E00000-0x0000000005E10000-memory.dmp

          memory/764-4-0x0000000005D20000-0x0000000005DB4000-memory.dmp

          memory/764-1-0x0000000001E00000-0x0000000001E08000-memory.dmp

          memory/764-3-0x0000000005C60000-0x0000000005C6C000-memory.dmp

          memory/764-5-0x0000000005DD0000-0x0000000005DF8000-memory.dmp

          memory/764-8-0x0000000005E00000-0x0000000005E10000-memory.dmp

          memory/764-0-0x0000000005E00000-0x0000000005E10000-memory.dmp

          memory/764-7-0x0000000006580000-0x0000000006B24000-memory.dmp

          memory/764-6-0x0000000005E10000-0x0000000005FC0000-memory.dmp

          memory/2264-231-0x0000000002320000-0x000000000233A000-memory.dmp

          memory/2264-216-0x000000001AD90000-0x000000001ADFC000-memory.dmp

          memory/2264-232-0x000000001C3B0000-0x000000001C536000-memory.dmp

          memory/2264-230-0x000000001B3F0000-0x000000001B5A0000-memory.dmp

          memory/2264-215-0x00000000001F0000-0x000000000029E000-memory.dmp

          memory/2264-217-0x000000001B1A0000-0x000000001B234000-memory.dmp

          memory/2448-170-0x0000000004110000-0x00000000041A4000-memory.dmp

          memory/2448-211-0x0000000004790000-0x0000000004866000-memory.dmp

          memory/2448-209-0x00000000041B0000-0x00000000041F1000-memory.dmp

          memory/2448-207-0x00000000045B0000-0x0000000004642000-memory.dmp

          memory/2448-187-0x0000000004200000-0x0000000004250000-memory.dmp

          memory/2448-164-0x0000000003FC0000-0x0000000003FDA000-memory.dmp

          memory/2448-206-0x00000000042C0000-0x000000000432C000-memory.dmp

          memory/2448-174-0x0000000004360000-0x0000000004510000-memory.dmp

          memory/3840-51-0x0000000005420000-0x00000000055D0000-memory.dmp

          memory/3840-43-0x0000000005100000-0x000000000510C000-memory.dmp

          memory/3840-39-0x00000000050C0000-0x00000000050EE000-memory.dmp

          memory/3840-47-0x00000000051D0000-0x0000000005264000-memory.dmp

          memory/4000-83-0x0000000004A80000-0x0000000004AA8000-memory.dmp

          memory/5024-234-0x00000000012D0000-0x0000000001311000-memory.dmp