Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    28/09/2026, 18:25

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample260928-w2xesacc84
  • SHA256 f95a3228b4c507ceb07f603ee0fe686faa47e2792c29ead5920a4cf83daaaa65
  • 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.

  • 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 47 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 10 IoCs
  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 13 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 6 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.

  • 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 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
    PID:540
  • 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:3972
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 866FC709D7E8966908AFAD2812B399E1 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:692
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSICC15.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240700640 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4188
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSID07B.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240701562 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:1748
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSID8D9.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240703718 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4392
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4860
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 04708D8C9AA25F48C948DCBE0FA93F65
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2636
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 6F63E07FF5E3296D0B2D796F8F807BA7 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:4840
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5108
    • C:\Program Files (x86)\ScreenConnect Client (d8f778b2ea177dad)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (d8f778b2ea177dad)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-dm7543-relay.screenconnect.com&p=443&s=f8ef6a57-7c20-4807-9032-30ae82172de0&k=BgIAAACkAABSU0ExAAgAAAEAAQBl6zBL2%2bYJUEhdb6IIl9jJx41yTK3Xak41aFHe%2boMGQCrOM5alogOyK0wJByODiPku%2fWCr8Sx%2bJ9CmQxtLnI3M8aZq0wGwveHm7pLwGL%2bsVLAkGhjs6xJGS91iNFBtphsBBmecFmZxp1bSM9RpKR1yCxA%2fpqU3M0zsAWvjtwjXeOrsabPT1jDFYDsh3QCMkbzg%2fXyk8neLEKtsnkmMoMtV3j1KIGREyMDwaoU1i6vWMDNF%2fwNeIjNnlDnas1MQ3Fxz%2fgbdM3k9DfF8DNgjmVOhKxGuCNP0oSLVPr940EeTN6FLhwdT%2b%2bLSXcHDnG290u2hsPh9cQoo%2bXPxVsAMPvHI"
      1⤵
      • Sets service image path in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • 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:220
      • C:\Program Files (x86)\ScreenConnect Client (d8f778b2ea177dad)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (d8f778b2ea177dad)\ScreenConnect.WindowsClient.exe" "RunRole" "69bbc201-c57e-41d0-9386-3489e0bf1fc0" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1044
      • C:\Program Files (x86)\ScreenConnect Client (d8f778b2ea177dad)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (d8f778b2ea177dad)\ScreenConnect.WindowsClient.exe" "RunRole" "6c4791e2-db16-4ac4-a8ce-b4c21f31c89e" "System"
        2⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • Reads the TCP/IP host and domain name from the registry
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:1764

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e591f85.rbs

          • Path C:\Config.Msi\e591f85.rbs
          • Size 214KB
          • SHA256 3651be77b7038363a1e4c2bc01a126e2a4cc571fe49afa9f259c0347db6e30f4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (d8f778b2ea177dad)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (d8f778b2ea177dad)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (d8f778b2ea177dad)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 27e873d0fceefdd1a12ca77e3bbecec2ece7acdba433b47dca102c35e1c5896c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (d8f778b2ea177dad)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 78fa9cf69577f6990275c7c472f7114f9d0c85e660f3b9c81b085fc3cfbc8673
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (d8f778b2ea177dad)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 5956f9afb3ba610c38b2cfda88dd15be98783963769a12020c93ce05e749b3c3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (d8f778b2ea177dad)\ScreenConnect.Core.dll
          • Size 582KB
          • SHA256 4eab8752d05cd31bafd07edde7d18061cb63eea99af3132460e6dc08bb5f9e73
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (d8f778b2ea177dad)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ec4de5e6e9c079a30a5780d79ee662e0a4c6d009f0e3f911edc560973fb17d1e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (d8f778b2ea177dad)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (d8f778b2ea177dad)\ScreenConnect.WindowsClient.exe
          • Size 685KB
          • SHA256 2763b953657e3c4d6b2f952218a1e1963bcd6971f0b1102d99bb7efea04ceb29
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (d8f778b2ea177dad)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 7511e679597572782241ff989c065c02f9f5a12ab37290b69a27226eda57ce75
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (d8f778b2ea177dad)\system.config
          • Size 968B
          • SHA256 294f9cd9240c3686fa1ae3217d4f864adf7982ef6e9465b265d5db39261c3782
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 30f22e3053841dd0f4213e6eb9d87a4542c56bbfee261c292c4d61aab6b90eb2
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 84aafe621743973e2ef3bfe2e7fc5e7af2a39cfbb90e80a0f9b96a5928cc2476
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 b382cf1175038a8f90b8ab47c4e4e93e2f11befb4fbcac2ba3f362d232a3b71a
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 8a3adea604d9a9fafe74a2eeb484c3deb96917980993e36c667c19d35827d664
          • 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

          MSICC15.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSICC15.tmp
          • Size 1.1MB
          • SHA256 400ff5b9a4439339876282909b23c397ffa208f4bcf64460fa2521284acf0b6e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSICC15.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSICC15.tmp-\ScreenConnect.Core.dll
          • Size 572KB
          • SHA256 74f2d225b492eb77a5654bcaafec5162d0c5f72de884daa4c32daf54e2bff3d7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSICC15.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 2022f13b1f562d3cbef3a3926f0370a2de64e57ff281a121f90001a47499a356
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSICC15.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 93f910f732855000861c1b4e6c55a2dee0a8cbb2172d89c7a2bc99053746c193
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSID07B.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID07B.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 361bbc692084841e4c8d22c89ca89c711d0fe17bc8759241736531a2f28de25b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI2179.tmp

          • Path C:\Windows\Installer\MSI2179.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e591f84.msi

          • Path C:\Windows\Installer\e591f84.msi
          • Size 9.8MB
          • SHA256 f95a3228b4c507ceb07f603ee0fe686faa47e2792c29ead5920a4cf83daaaa65
          • MD5 SHA1 SHA512 SSDEEP TLSH

          35pzt14s.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (d8f778b2ea177dad)\35pzt14s.newcfg
          • Size 882B
          • SHA256 e9a28727be92966fe063673ab885c30957b849103ffd3a35fb3670b94cc0cf05
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (d8f778b2ea177dad)\user.config
          • Size 520B
          • SHA256 98e22383b777dc1156e9c2bb93ca8d0d6a1fe8e7f8cafe3e32cdc07747e891b5
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (d8f778b2ea177dad)\user.config
          • Size 683B
          • SHA256 4ebec6f82883612d5a25f1299f8ee26685c6acf246da433d4667466d2df95dee
          • MD5 SHA1 SHA512 TLSH

          memory/220-161-0x00000000047B0000-0x0000000004846000-memory.dmp

          memory/220-198-0x0000000004920000-0x0000000004961000-memory.dmp

          memory/220-165-0x0000000004A00000-0x0000000004BB0000-memory.dmp

          memory/220-195-0x0000000004990000-0x00000000049FC000-memory.dmp

          memory/220-155-0x00000000045B0000-0x00000000045CA000-memory.dmp

          memory/220-169-0x00000000048D0000-0x0000000004920000-memory.dmp

          memory/220-200-0x0000000004E30000-0x0000000004F06000-memory.dmp

          memory/220-196-0x0000000004C50000-0x0000000004CE2000-memory.dmp

          memory/1044-221-0x000000001B3B0000-0x000000001B560000-memory.dmp

          memory/1044-218-0x00000000001D0000-0x0000000000280000-memory.dmp

          memory/1044-219-0x0000000002470000-0x00000000024DC000-memory.dmp

          memory/1044-220-0x000000001B160000-0x000000001B1F6000-memory.dmp

          memory/1044-222-0x0000000002400000-0x000000000241A000-memory.dmp

          memory/1044-223-0x000000001C7A0000-0x000000001C926000-memory.dmp

          memory/1748-74-0x0000000004E00000-0x0000000004E28000-memory.dmp

          memory/1764-224-0x00000000021F0000-0x0000000002231000-memory.dmp

          memory/4188-42-0x00000000052E0000-0x0000000005884000-memory.dmp

          memory/4188-41-0x0000000004B80000-0x0000000004D30000-memory.dmp

          memory/4188-33-0x00000000024E0000-0x00000000024EC000-memory.dmp

          memory/4188-37-0x0000000004930000-0x00000000049C6000-memory.dmp

          memory/4188-29-0x00000000024A0000-0x00000000024CE000-memory.dmp