Analysis

  • max time kernel
    148s
  • max time network
    140s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    21/07/2026, 16:07

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample260721-tkv5aaxvhs
  • SHA256 7fa0831ca9cc3e55c3205743e8ef74ad036c47f2af3e3034c2a46c7fba7f82be
  • 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 4 IoCs
  • Loads dropped DLL 50 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 12 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
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 8 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 9 IoCs
  • Suspicious use of SendNotifyMessage 7 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:4900
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Badlisted process makes network request
    • 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:6108
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding AA5941421119FDE63B2C1BF8BE063969 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4632
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI6CD9.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240741812 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3056
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI7120.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240742703 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2552
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI79BC.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240744921 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5380
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4132
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding EC22A8A6EFE7A7B1098AF4847D8937EB
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1784
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 0EE842B1AF48236A2DC6B2147886B107 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:5648
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:6088
    • C:\Program Files (x86)\ScreenConnect Client (87525c559a992cd1)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (87525c559a992cd1)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-o0xl3w-relay.screenconnect.com&p=443&s=6d750982-5672-4b68-bbdd-ef50a10fb6de&k=BgIAAACkAABSU0ExAAgAAAEAAQCZfY17i%2f7OTPZ4G9FuDG3DRH%2fm49x8n4NafTajbWhifjV%2bCsxzMIHoLZOj%2bbEb03Hu2idrLGKzSujKqmQPgNXyezjflu4EL80siYn2bynPTRyQV5Cn561BTYy7aCz34ecJgA7CqXwMWxblbU3J%2b47XlhaDYnSiG0oB2ivuCAwJXIXx6VpWabr75Z7HLTKQJuuKZ1BEPncTVKGaMqJWQbunesajKEUUGhE9IHQr6YBYMmsBxVIpjoBOigJxJNElncuqfL4BMtce2eNlL%2bOZq6g6trAZVY6uTEpw2NEUKYhXEZ5%2bIv6zzJB5FB9hVFt7h8Y5pUU2fUTwLr82Ci9sYazr"
      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:6068
      • C:\Program Files (x86)\ScreenConnect Client (87525c559a992cd1)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (87525c559a992cd1)\ScreenConnect.WindowsClient.exe" "RunRole" "c99e86cb-f8d0-4951-9dd4-576568591696" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:3216
      • C:\Program Files (x86)\ScreenConnect Client (87525c559a992cd1)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (87525c559a992cd1)\ScreenConnect.WindowsClient.exe" "RunRole" "afa5ab08-4f9b-46eb-867d-977a9f57eca5" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:2348
    • C:\Program Files (x86)\ScreenConnect Client (87525c559a992cd1)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (87525c559a992cd1)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-o0xl3w-relay.screenconnect.com&p=443&s=6d750982-5672-4b68-bbdd-ef50a10fb6de&k=BgIAAACkAABSU0ExAAgAAAEAAQCZfY17if7OTPZ4G9FuDG3DRHfm49x8n4NafTajbWhifjVbCsxzMIHoLZOjbbEb03Hu2idrLGKzSujKqmQPgNXyezjflu4EL80siYn2bynPTRyQV5Cn561BTYy7aCz34ecJgA7CqXwMWxblbU3Jb47XlhaDYnSiG0oB2ivuCAwJXIXx6VpWabr75Z7HLTKQJuuKZ1BEPncTVKGaMqJWQbunesajKEUUGhE9IHQr6YBYMmsBxVIpjoBOigJxJNElncuqfL4BMtce2eNlLbOZq6g6trAZVY6uTEpw2NEUKYhXEZ5bIv6zzJB5FB9hVFt7h8Y5pUU2fUTwLr82Ci9sYazr"
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:1964
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1964 -s 1312
        2⤵
        • Program crash
        PID:3384
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1964 -ip 1964
      1⤵
        PID:4232

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e59ba9d.rbs

            • Path C:\Config.Msi\e59ba9d.rbs
            • Size 214KB
            • SHA256 93a734ca724551f1796d180ec7cebd7da324e6d100e758f7a4ef6fe141567efb
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (87525c559a992cd1)\ScreenConnect.Client.dll
            • Size 412KB
            • SHA256 4010ea184982e71ad71e76b43266488c954f665324b89ef042cea9e463a60c9d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (87525c559a992cd1)\ScreenConnect.ClientService.dll
            • Size 91KB
            • SHA256 6e6aa42b107d3e82b7b7dc18a75eee3f09e9f268788c0a7edbbc617152adf178
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (87525c559a992cd1)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 a94ecccb5b88e3860d619fbb3b87ff4af6448240ab65b89d610f348d75e793f2
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (87525c559a992cd1)\ScreenConnect.Core.dll
            • Size 577KB
            • SHA256 eedbd9ba4755f238af397c71b575082e18a31eabacc22abb4949f92fe991e169
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (87525c559a992cd1)\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 305663a05c77c8058569a976db740aa2f20b66583f0381059633b628376570fc
            • MD5 SHA1 SHA512 SSDEEP TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (87525c559a992cd1)\system.config
            • Size 958B
            • SHA256 fbdf1c9254b43a76ee0c30b0ce4eb398cd6dbb859f07d7fc9262cd84b1e0f40f
            • MD5 SHA1 SHA512 TLSH

            MSI6CD9.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSI6CD9.tmp
            • Size 1.1MB
            • SHA256 18bacfd2a7c95800b6279cb8731bf03c8bbb526f5bc3790254a8e06d7ceee8ad
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI6CD9.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI6CD9.tmp-\ScreenConnect.Core.dll
            • Size 567KB
            • SHA256 15fec18d3a8990cdb540897ede61227353165668048c001164fcd22233cc8390
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI6CD9.tmp-\ScreenConnect.InstallerActions.dll
            • Size 24KB
            • SHA256 c1142cc3ae09a7d3b5392539c29cbeb585543a38c93e37e55d82cbe0bb56d588
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI6CD9.tmp-\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 ae3005e1ca932eccde09c479fde2ecf8ea2feeb908dec4f0c830eab671276454
            • MD5 SHA1 SHA512 SSDEEP TLSH

            CustomAction.config

            • Path C:\Users\Admin\AppData\Local\Temp\MSI7120.tmp-\CustomAction.config
            • Size 234B
            • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI7120.tmp-\ScreenConnect.WindowsInstaller.dll
            • Size 137KB
            • SHA256 7c27380976a5befc5a947e129eb464123f46d06cf0eb7f984ced921f36e1d0e7
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSIF8A0.tmp

            • Path C:\Windows\Installer\MSIF8A0.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            e59ba9c.msi

            • Path C:\Windows\Installer\e59ba9c.msi
            • Size 9.8MB
            • SHA256 7fa0831ca9cc3e55c3205743e8ef74ad036c47f2af3e3034c2a46c7fba7f82be
            • MD5 SHA1 SHA512 SSDEEP TLSH

            bsw0odka.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (87525c559a992cd1)\bsw0odka.newcfg
            • Size 683B
            • SHA256 589e8199af36ee569c4c05eaac66ff1783a4e4676601507da289310207358212
            • MD5 SHA1 SHA512 TLSH

            qbwiswbr.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (87525c559a992cd1)\qbwiswbr.newcfg
            • Size 883B
            • SHA256 1b996415dd8b4269fe8a907bb7779796f7245ceabf31b0de2ddf8e6fea932462
            • MD5 SHA1 SHA512 TLSH

            qhmanov3.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (87525c559a992cd1)\qhmanov3.newcfg
            • Size 883B
            • SHA256 e79fbd37c45716814520f0708d5d2cf3dd01349805796cd377f7e9c7aa897220
            • MD5 SHA1 SHA512 TLSH

            user.config

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (87525c559a992cd1)\user.config
            • Size 520B
            • SHA256 f73d8b18741837812aeee568a8dee18bff1fd15b5f7abd152611479b8663040e
            • MD5 SHA1 SHA512 TLSH

            metadata-2

            • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
            • Size 26.1MB
            • SHA256 676ced94c562f114b21762234e0ed9b3ea28af110c28a06793416418c9d8aafa
            • MD5 SHA1 SHA512 SSDEEP TLSH

            {f5090f14-7e05-4dcd-bbd7-4a25981b6ac5}_OnDiskSnapshotProp

            • Path \??\Volume{c61fbfff-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{f5090f14-7e05-4dcd-bbd7-4a25981b6ac5}_OnDiskSnapshotProp
            • Size 6KB
            • SHA256 affdbe3a9bf2318c035d6b179172221f074174ff7ed66387ba43a643d8fa9a79
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/1964-152-0x0000000005620000-0x00000000056B4000-memory.dmp

            memory/2552-62-0x00000000037F0000-0x0000000003818000-memory.dmp

            memory/3056-32-0x00000000068F0000-0x0000000006EAA000-memory.dmp

            memory/3056-31-0x0000000006180000-0x0000000006330000-memory.dmp

            memory/3056-23-0x0000000003DF0000-0x0000000003DFC000-memory.dmp

            memory/3056-19-0x0000000003DB0000-0x0000000003DDE000-memory.dmp

            memory/3056-27-0x0000000005EF0000-0x0000000005F84000-memory.dmp

            memory/3216-208-0x0000000000900000-0x00000000009AE000-memory.dmp

            memory/3216-213-0x000000001BF20000-0x000000001C0A8000-memory.dmp

            memory/3216-212-0x0000000002AD0000-0x0000000002AEA000-memory.dmp

            memory/3216-211-0x000000001BBE0000-0x000000001BD90000-memory.dmp

            memory/3216-210-0x000000001B990000-0x000000001BA24000-memory.dmp

            memory/3216-209-0x0000000002B80000-0x0000000002BEC000-memory.dmp

            memory/6068-172-0x0000000003B20000-0x0000000003B70000-memory.dmp

            memory/6068-194-0x0000000004090000-0x0000000004166000-memory.dmp

            memory/6068-193-0x0000000003B70000-0x0000000003BB1000-memory.dmp

            memory/6068-192-0x0000000003EA0000-0x0000000003F32000-memory.dmp

            memory/6068-191-0x0000000003BE0000-0x0000000003C4C000-memory.dmp

            memory/6068-142-0x00000000014E0000-0x00000000014FA000-memory.dmp

            memory/6068-158-0x0000000003C50000-0x0000000003E00000-memory.dmp