Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    08/07/2026, 12:13

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample260708-pd4evsfs8v
  • SHA256 631425d207e50b3cfc74d9ad0b0722493f6340a06c59f153f330b8d534b69fe8
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 5 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 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
  • 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:4116
  • 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:2332
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 4F8B2FCC0CA0327DE673629419A89E38 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2112
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI8D95.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240684750 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4204
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI944D.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240686171 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4260
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI8DF0.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240750062 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1404
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:540
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding E388703348EA966D31D54F7E71465846
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3508
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 48FA55B82B7E9CE7E0AEE3C29A27F257 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:4484
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3608
    • C:\Program Files (x86)\ScreenConnect Client (edb47a9132b9e027)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (edb47a9132b9e027)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-accmjr-relay.screenconnect.com&p=443&s=f39a6085-59a1-4eb4-bdd6-7ba7ffab0e26&k=BgIAAACkAABSU0ExAAgAAAEAAQAdTg6A%2fbNb0p%2fzH0oCf1%2brAmFZHGuhen%2flfEhoC9AbBPiCPRDbpvJg6Jo1Z80F9uhEffH59YnY%2frJNGMCSXeovHCWVra5fpZHBiPUEEYqjLJbUsOz9NU20lc3ZTK%2bSHGR%2bkjuN67amMBXBDnqa988IgvGntmfsQVqPYAY3Cx4%2bCdXDDTlXLoTag%2fF5uih3p8hrFflvg8fjXP60oYLKqb8jPJXM7GmEfnNKBeU2C7Cf8%2fzh6iP3AquvtMqOOTw6iHx38yai6kdogZOqhOIrIyNzKMCvpGmYmhQGDWXtq%2fJjGZBG%2bCQTkBUJQEaVrFX6xD4Yp9XDTMP02tL5BNMN9VXL"
      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 (edb47a9132b9e027)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (edb47a9132b9e027)\ScreenConnect.WindowsClient.exe" "RunRole" "0e25c1f5-7eb8-4cda-8058-bb3ee36f59cc" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4024
      • C:\Program Files (x86)\ScreenConnect Client (edb47a9132b9e027)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (edb47a9132b9e027)\ScreenConnect.WindowsClient.exe" "RunRole" "f18b6286-269f-42c6-9d25-db15f05e9d93" "System"
        2⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4568

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e59c971.rbs

          • Path C:\Config.Msi\e59c971.rbs
          • Size 214KB
          • SHA256 a4257f60bca1f03d058042700725329dbf13a4c0be1b8b89d90d0aeea9470a78
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (edb47a9132b9e027)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (edb47a9132b9e027)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (edb47a9132b9e027)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 44d7c87abe55a23318a1627a845a999acc268cc4ece97e2e80849ad869809ee1
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (edb47a9132b9e027)\ScreenConnect.ClientService.dll
          • Size 91KB
          • SHA256 b607976c1aa7e804d8d53993ddf81ebf4b85117a12d7b4e9ee228e907e1f4025
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (edb47a9132b9e027)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 4cfe96e8e6d4cc96bc0f9c7935ab32531deeb0f52a8c39f739da928d6f5d344b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (edb47a9132b9e027)\ScreenConnect.Core.dll
          • Size 577KB
          • SHA256 5c98fa479fd677e900bd53f15c3969deeb99c109e026f169862a6458a55bddcb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (edb47a9132b9e027)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 c1a6e533825b7adb9c2312c1674a5506fd3db460a15443d82c58b5037c68a9f0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (edb47a9132b9e027)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (edb47a9132b9e027)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 f340a7376628a7a27ff45dd479cb5c09e072e79bbd318deef39325c29541dbdd
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (edb47a9132b9e027)\system.config
          • Size 968B
          • SHA256 e00a42502c48fb816fb73e7a646b39c21c243ded76cb28f67fc544341e0e198b
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 91633ff90cfc43ccbc40651401cfb4e97fbf3d8e0fd34711fb5ec3b4c9551866
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 a1f94b5beb7cbf9c3a608a3576ab072d303f92c9a8d4f6d0f348cb5e91200bd2
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 e1fc9c27364a15ae125f0a87ddd14a44f79e2949fba6ef9d0506521dbb2a8103
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 90fc3fbb916434ba565f474c267e21666b8e5343a7371e709c368e2575c3b65d
          • 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

          MSI8D95.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8D95.tmp
          • Size 1.1MB
          • SHA256 71155d6834aa9d39bdbe3c1b1791f7e59c263b3be61ee4e4d645a29fdee7dd27
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8D95.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8D95.tmp-\ScreenConnect.Core.dll
          • Size 567KB
          • SHA256 3e335088245a44e7d929a108a3fec2985df749f697fdd7c1815abefe9a1effb0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8D95.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 52d52f271a4314bece5f573642fd41f9e71724796e250a96ca61470ba71b4d82
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8D95.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 e0cf56d4793a7ac0ede73d5229c1cf8a9eb0f8352a61ecdd42ee4800a42ceaef
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI944D.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI944D.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 8e0d135002984f0dbae6575086d9a72d51aa8dd58e53a9e0eba58c0d5bc7678e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSICB37.tmp

          • Path C:\Windows\Installer\MSICB37.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e59c970.msi

          • Path C:\Windows\Installer\e59c970.msi
          • Size 9.8MB
          • SHA256 631425d207e50b3cfc74d9ad0b0722493f6340a06c59f153f330b8d534b69fe8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          4jevxel2.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (edb47a9132b9e027)\4jevxel2.newcfg
          • Size 883B
          • SHA256 1a0252677bea647f234b9d0f027fd363822a5a5264bf9375583af9f31879bbb7
          • MD5 SHA1 SHA512 TLSH

          hjm5uvpl.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (edb47a9132b9e027)\hjm5uvpl.newcfg
          • Size 683B
          • SHA256 323f87abafcedb371b8ca34246e9084f8cef66e810dd12f049b685aaef38794d
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (edb47a9132b9e027)\user.config
          • Size 520B
          • SHA256 ed974f8d24e6aaa411a2b21f51ab21ea2a463e7533c4481896379e88ea2cbc28
          • MD5 SHA1 SHA512 TLSH

          memory/4024-220-0x000000001BB50000-0x000000001BBE4000-memory.dmp

          memory/4024-225-0x000000001D190000-0x000000001D316000-memory.dmp

          memory/4024-224-0x0000000001300000-0x000000000131A000-memory.dmp

          memory/4024-226-0x0000000001320000-0x0000000001361000-memory.dmp

          memory/4024-221-0x000000001BDA0000-0x000000001BF50000-memory.dmp

          memory/4024-219-0x000000001B7B0000-0x000000001B81C000-memory.dmp

          memory/4024-218-0x0000000000B90000-0x0000000000C3C000-memory.dmp

          memory/4204-42-0x0000000005DD0000-0x0000000006374000-memory.dmp

          memory/4204-41-0x0000000005670000-0x0000000005820000-memory.dmp

          memory/4204-33-0x0000000002FD0000-0x0000000002FDC000-memory.dmp

          memory/4204-29-0x0000000002F90000-0x0000000002FBE000-memory.dmp

          memory/4204-37-0x0000000005420000-0x00000000054B4000-memory.dmp

          memory/4260-74-0x00000000054F0000-0x0000000005518000-memory.dmp

          memory/4640-188-0x00000000041E0000-0x0000000004272000-memory.dmp

          memory/4640-190-0x0000000003E80000-0x0000000003EC1000-memory.dmp

          memory/4640-192-0x00000000043C0000-0x0000000004496000-memory.dmp

          memory/4640-187-0x0000000003EF0000-0x0000000003F5C000-memory.dmp

          memory/4640-168-0x0000000003E30000-0x0000000003E80000-memory.dmp

          memory/4640-162-0x0000000003D40000-0x0000000003DD4000-memory.dmp

          memory/4640-166-0x0000000003F90000-0x0000000004140000-memory.dmp

          memory/4640-156-0x0000000003AE0000-0x0000000003AFA000-memory.dmp