Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    04/05/2026, 20:23

General

  • Target
    ScreenConnect.ClientSetup2.exe
  • Size 14.2MB
  • Sample260504-y6ermscs41
  • SHA256 b19c991b94e53fa1ddb32f9482250478bb9840d57d380f05e69f7b70be37beca
  • 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.

  • 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
  • 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 17 IoCs
  • Drops file in Windows directory 17 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 14 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 11 IoCs
  • Suspicious use of SendNotifyMessage 9 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.ClientSetup2.exe
    "C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup2.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1104
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.1.24.9579\078cf78053ce80d7\ScreenConnect.ClientSetup.msi" SC_EXE_PATH="C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup2.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:4200
  • 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:3656
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 8893E282A86C8526F638A37B27D3C9E3 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3176
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI6E26.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240676500 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4004
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI7079.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240677000 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1868
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI73E5.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240677859 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:776
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2496
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 9AE12EE0400C08DE63F6504E81BBC4F0
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5072
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 56FB1C100337D0703F62661873B6F2EE E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4212
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1848
    • C:\Program Files (x86)\ScreenConnect Client (078cf78053ce80d7)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (078cf78053ce80d7)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-oo2rxt-relay.screenconnect.com&p=443&s=0115d126-fa33-4f73-a9aa-a5d2e485a839&k=BgIAAACkAABSU0ExAAgAAAEAAQAB3QQh%2b4Z70rEF8gcifgYatEI%2ftpNXYcHa%2faOrAcO24zZf4nqJyMF3BabZVwnG0Fi2h5U02WbDB28Y5ZqVzabHJU5wdPUv9YJXlKGbH9Fdj3CgWuvrk6zaNNMvisVWonR%2fPwvYv52tm1SujatDjjYKjfYYhuGPH7%2fRhoiETNve4wChqR1M7bSPFPwZrT1ZLSvAT3jwjUxt4bCSDiAadsfkL10tF9%2fvENUkqXlVsmNai8dJ5i%2f4ltn2RE%2fbs1hKf0dKg6bHL5J8HdjcIhguKNDpVbFlGoSoe3gPZsOuDbYKDZLUA20xPB8%2blaAz9A4WaKRr9aoFgf78EgymxFriPvzD&c=1g6aun4&c=&c=&c=&c=&c=&c=&c="
      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:1060
      • C:\Program Files (x86)\ScreenConnect Client (078cf78053ce80d7)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (078cf78053ce80d7)\ScreenConnect.WindowsClient.exe" "RunRole" "029e33c8-77f6-4ab3-9728-087e42ff3ad0" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4356
      • C:\Program Files (x86)\ScreenConnect Client (078cf78053ce80d7)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (078cf78053ce80d7)\ScreenConnect.WindowsClient.exe" "RunRole" "fac4719f-ed6f-44e4-8f80-e540af041102" "System"
        2⤵
        • Drops file in System32 directory
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4756

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e58a45a.rbs

          • Path C:\Config.Msi\e58a45a.rbs
          • Size 214KB
          • SHA256 bcffec98f0c8a4f73425d5199ab09f3977ceb8b2f6491b09e8ef744a0f954752
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (078cf78053ce80d7)\Client.en-US.resources
          • Size 64KB
          • SHA256 efdb0b4fcc38b52cbf72336bd107a814db8454003f3495de21e2026a148823ea
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (078cf78053ce80d7)\ScreenConnect.Client.dll
          • Size 411KB
          • SHA256 28ff8468ad2db8b41fe9d9a2971dd56fea0aecad14808fe4b31c9b1072d3b129
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (078cf78053ce80d7)\ScreenConnect.ClientService.dll
          • Size 90KB
          • SHA256 9cf2c77df0a1a1e854ec1bbc6940d96f508bfb4b0555a07657c77314803a717e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (078cf78053ce80d7)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 01341bd42426c3d110136cc94433df00dbad690a56593f7cca41a93f698f214a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (078cf78053ce80d7)\ScreenConnect.Core.dll
          • Size 572KB
          • SHA256 92e831159d5e9f2676241ab7ce80060a0b1dc34684f83797aec93b3ecff41139
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (078cf78053ce80d7)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 2292aac48ad575c6d1ed99c862e3408e254db34b8fea50cf3594aa08f3e875d0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (078cf78053ce80d7)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (078cf78053ce80d7)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 838KB
          • SHA256 3fa1fe4a588015cc94eceb06867f16a5e562293139fbf6b36bde21dba478968d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (078cf78053ce80d7)\app.config
          • Size 627B
          • SHA256 1bc8bc3a6bceecf019ca322f07832fd1f26807cb60520af472bff3f59dcc64f2
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (078cf78053ce80d7)\system.config
          • Size 962B
          • SHA256 edc4f67601ae649be39d5fedc6ce73c67d7fa471cdb9a10d821321368bb8eb95
          • MD5 SHA1 SHA512 TLSH

          1A374813EDB1A6631387E414D3E73232

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\1A374813EDB1A6631387E414D3E73232
          • Size 166KB
          • SHA256 601fd6bac28c55bb63df406979c2459f8a1fb6e59fc3dd1f6743f8f53c2461fa
          • MD5 SHA1 SHA512 SSDEEP TLSH

          BA74182F76F15A9CF514DEF352303C95

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\BA74182F76F15A9CF514DEF352303C95
          • Size 737B
          • SHA256 45a9546461b0ace991f9691d7892922a409e70ceb490324d239b73f66439fcb1
          • MD5 SHA1 SHA512 TLSH

          1A374813EDB1A6631387E414D3E73232

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\1A374813EDB1A6631387E414D3E73232
          • Size 306B
          • SHA256 1b906fe76f22803b6abdfe6ea3969d29991946f459ec3cd214ad384c31f3a7aa
          • MD5 SHA1 SHA512 TLSH

          BA74182F76F15A9CF514DEF352303C95

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\BA74182F76F15A9CF514DEF352303C95
          • Size 248B
          • SHA256 3882e20e6e0c0add89011550baaffcefa7ac9da9cef79f34019ff17d3ff6bb18
          • 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 76ced2c52d647683572ceac0687933e96e198b5a6f998457fa334763cc1ef978
          • MD5 SHA1 SHA512 TLSH

          MSI6E26.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6E26.tmp
          • Size 1.1MB
          • SHA256 cd6bccce073b2a5205840ec31c91df0d443cc57c68756de2c03e21db8e3fc157
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6E26.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6E26.tmp-\ScreenConnect.Core.dll
          • Size 562KB
          • SHA256 c51a2b5cb5054ec0136e332bf290c8af3392d7936b5137a07423df08ab33d264
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6E26.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 432abf3a198ff64fb2c660eb06b2bb33a16cf69fd28d836cfcb65c43d37dc462
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6E26.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 10933424536d53e397f651915f862c933199c50722943c236b020787b2e8f147
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7079.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7079.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 528242c7745783b3b4ae72fec13bb9bd49b17b0e00f60c027351147f21fdd359
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.1.24.9579\078cf78053ce80d7\ScreenConnect.ClientSetup.msi
          • Size 11.8MB
          • SHA256 e8ca746f8833efa3cc53dd90c75146c0b646e5810ebad8ffe16de2c5cda31163
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIA593.tmp

          • Path C:\Windows\Installer\MSIA593.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          3cen20u0.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (078cf78053ce80d7)\3cen20u0.newcfg
          • Size 586B
          • SHA256 942a3c7c3dd1c47750511434b5658b12a02ad34c9a26089748419ce1df55175a
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (078cf78053ce80d7)\user.config
          • Size 586B
          • SHA256 436f229a5a06e97e54d2f466389aa002691320ec0441e72281ba7e6b81eb71c7
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (078cf78053ce80d7)\user.config
          • Size 586B
          • SHA256 af7120219a953dfd819f85e5bea0da9cca6c0570d563baf580aedbf63233b7dc
          • MD5 SHA1 SHA512 TLSH

          memory/776-135-0x0000000002A30000-0x0000000002AAC000-memory.dmp

          memory/1060-199-0x00000000044F0000-0x000000000455A000-memory.dmp

          memory/1060-195-0x0000000004430000-0x0000000004480000-memory.dmp

          memory/1060-192-0x0000000004590000-0x0000000004740000-memory.dmp

          memory/1060-201-0x0000000004740000-0x0000000004781000-memory.dmp

          memory/1060-188-0x0000000004340000-0x00000000043D4000-memory.dmp

          memory/1060-182-0x0000000001BB0000-0x0000000001BCA000-memory.dmp

          memory/1060-203-0x00000000049D0000-0x0000000004AA5000-memory.dmp

          memory/1060-233-0x0000000004480000-0x00000000044B7000-memory.dmp

          memory/1060-232-0x0000000001B80000-0x0000000001B8B000-memory.dmp

          memory/1104-5-0x0000000005CF0000-0x0000000005D18000-memory.dmp

          memory/1104-4-0x0000000005C60000-0x0000000005CF4000-memory.dmp

          memory/1104-11-0x0000000005BE0000-0x0000000005BF0000-memory.dmp

          memory/1104-10-0x0000000005BE0000-0x0000000005BF0000-memory.dmp

          memory/1104-1-0x0000000001D50000-0x0000000001D58000-memory.dmp

          memory/1104-9-0x0000000005BE0000-0x0000000005BF0000-memory.dmp

          memory/1104-0-0x0000000005BE0000-0x0000000005BF0000-memory.dmp

          memory/1104-8-0x0000000005FD0000-0x0000000006062000-memory.dmp

          memory/1104-2-0x0000000005BE0000-0x0000000005BF0000-memory.dmp

          memory/1104-7-0x0000000006480000-0x0000000006A26000-memory.dmp

          memory/1104-6-0x0000000005D20000-0x0000000005ED0000-memory.dmp

          memory/1104-14-0x00000000063B0000-0x0000000006471000-memory.dmp

          memory/1104-3-0x00000000035A0000-0x00000000035AC000-memory.dmp

          memory/1868-102-0x0000000005CA0000-0x0000000005CAE000-memory.dmp

          memory/1868-92-0x0000000005850000-0x0000000005878000-memory.dmp

          memory/1868-101-0x00000000016D0000-0x000000000174C000-memory.dmp

          memory/3176-138-0x0000000001080000-0x00000000010FC000-memory.dmp

          memory/3656-231-0x0000015F910D0000-0x0000015F910DC000-memory.dmp

          memory/4004-47-0x0000000002830000-0x000000000285E000-memory.dmp

          memory/4004-65-0x0000000000AB0000-0x0000000000B2C000-memory.dmp

          memory/4004-59-0x0000000004F30000-0x00000000050E0000-memory.dmp

          memory/4004-55-0x0000000004CE0000-0x0000000004D74000-memory.dmp

          memory/4004-51-0x0000000002870000-0x000000000287C000-memory.dmp

          memory/4200-136-0x0000000002320000-0x000000000239C000-memory.dmp

          memory/4200-218-0x0000000002320000-0x000000000239C000-memory.dmp

          memory/4200-24-0x0000000002890000-0x0000000002897000-memory.dmp

          memory/4200-23-0x0000000002320000-0x000000000239C000-memory.dmp

          memory/4200-219-0x0000000002890000-0x0000000002897000-memory.dmp

          memory/4212-216-0x0000000002C70000-0x0000000002CEC000-memory.dmp

          memory/4356-227-0x000000001C0B0000-0x000000001C260000-memory.dmp

          memory/4356-230-0x0000000001700000-0x000000000171A000-memory.dmp

          memory/4356-229-0x00000000016C0000-0x00000000016DA000-memory.dmp

          memory/4356-228-0x000000001C3F0000-0x000000001C578000-memory.dmp

          memory/4356-224-0x0000000000DC0000-0x0000000000E6A000-memory.dmp

          memory/4356-234-0x0000000001660000-0x000000000166C000-memory.dmp

          memory/4356-226-0x000000001BE60000-0x000000001BEF4000-memory.dmp

          memory/4356-225-0x0000000001B30000-0x0000000001B9A000-memory.dmp

          memory/4756-278-0x0000000000AF0000-0x0000000000AFC000-memory.dmp

          memory/5072-215-0x0000000000A70000-0x0000000000AEC000-memory.dmp