Analysis

  • max time kernel
    149s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    20/04/2026, 18:45

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 12.2MB
  • Sample260420-xefzysev31
  • SHA256 fdfeabbadfcabe90ab096ffd086b8ee2a93267667752859b240d2170370af61b
  • 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 3 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:2368
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.1.24.9579\9c0daf4edd13834d\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:3540
  • 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:4068
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 40A55709B3B627A586512166E7FDD47E C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3340
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI4CA4.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240667890 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4920
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI4F64.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240668515 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4536
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI53E9.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240669687 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:512
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4216
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 8AAA33A5F5D8A1043AFA911C3277FED4
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4324
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 543004A4A0A3816EE180888F581C0864 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1332
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:116
    • C:\Program Files (x86)\ScreenConnect Client (9c0daf4edd13834d)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (9c0daf4edd13834d)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-pzzb0h-relay.screenconnect.com&p=443&s=969f4038-437a-476e-9060-859dfa80d6a8&k=BgIAAACkAABSU0ExAAgAAAEAAQB1Md94kR5eIZx8qWMOlYHkVQP8aNjSOMn4RD7ftmC%2fhJZ3s7GxZNp3jlOx19BZhQ1WHoIYHrrW99Kv2LlwzgNv%2flnBv1hVxnDcdkfw2q%2bMgM64R8OT8SEaDR%2fT88EoVqSF4LAw0Ws0%2f6nBCE%2bk8dbIYJiF0KqKFPSDnbeAZHzKQQbwhqsAH%2fUR6lYvidc4vK%2bBkwLbpX0YhGiXzbEqyHkDUsD1koJV9Sha0AMXdeIMFy9tay95YOncmxHuzz%2bjge3xfuOBr3bvCLNzFhxOjZ4Tw735x077LTXget0wcyKKOZ3Z31hCLkxstO%2bqWlAOKOZ2HWyaK%2bVLLxo4OWPa0%2bGo"
      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:3720
      • C:\Program Files (x86)\ScreenConnect Client (9c0daf4edd13834d)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (9c0daf4edd13834d)\ScreenConnect.WindowsClient.exe" "RunRole" "868a7aa7-e5b1-47f0-abe9-3a1b2221dc82" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:3716
      • C:\Program Files (x86)\ScreenConnect Client (9c0daf4edd13834d)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (9c0daf4edd13834d)\ScreenConnect.WindowsClient.exe" "RunRole" "a9bb1640-0b88-4b87-b4fe-31c2717354e1" "System"
        2⤵
        • Drops file in System32 directory
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:3828

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e5885d6.rbs

          • Path C:\Config.Msi\e5885d6.rbs
          • Size 214KB
          • SHA256 f7f4852656267450d33b7734674de01768450c57d8bb7c182f39c526677a9713
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9c0daf4edd13834d)\ScreenConnect.Client.dll
          • Size 411KB
          • SHA256 28ff8468ad2db8b41fe9d9a2971dd56fea0aecad14808fe4b31c9b1072d3b129
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9c0daf4edd13834d)\ScreenConnect.ClientService.dll
          • Size 90KB
          • SHA256 9cf2c77df0a1a1e854ec1bbc6940d96f508bfb4b0555a07657c77314803a717e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (9c0daf4edd13834d)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 01341bd42426c3d110136cc94433df00dbad690a56593f7cca41a93f698f214a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9c0daf4edd13834d)\ScreenConnect.Core.dll
          • Size 572KB
          • SHA256 92e831159d5e9f2676241ab7ce80060a0b1dc34684f83797aec93b3ecff41139
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9c0daf4edd13834d)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 2292aac48ad575c6d1ed99c862e3408e254db34b8fea50cf3594aa08f3e875d0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9c0daf4edd13834d)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9c0daf4edd13834d)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 838KB
          • SHA256 3fa1fe4a588015cc94eceb06867f16a5e562293139fbf6b36bde21dba478968d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (9c0daf4edd13834d)\system.config
          • Size 968B
          • SHA256 08d7734ce25521195c1f084e724b1096e335cd68054f2b17f71a6f31387923f6
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 345e4005e44cfe6e6a0d0ca8d4ae54cb5c2ae804146db1eb7b1741af7bcd43a9
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 0d8332dc5439d14349ea69944073fb2918d1e80e395dde10e2be475df1ea2101
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 34a399906f01ff8aa857dc514fcead2c59f3ffd5444e98ae0c0b88266735291f
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 067822c69e50860158429d0972911c4a343243840dab900320ffe61bac78ec91
          • 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

          MSI4CA4.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4CA4.tmp
          • Size 1.1MB
          • SHA256 cd6bccce073b2a5205840ec31c91df0d443cc57c68756de2c03e21db8e3fc157
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4CA4.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4CA4.tmp-\ScreenConnect.Core.dll
          • Size 562KB
          • SHA256 c51a2b5cb5054ec0136e332bf290c8af3392d7936b5137a07423df08ab33d264
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4CA4.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 432abf3a198ff64fb2c660eb06b2bb33a16cf69fd28d836cfcb65c43d37dc462
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4CA4.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 10933424536d53e397f651915f862c933199c50722943c236b020787b2e8f147
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4F64.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4F64.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\9c0daf4edd13834d\ScreenConnect.ClientSetup.msi
          • Size 9.7MB
          • SHA256 6f83f07369a925e3e30d603272222a6baa718a7e7105a1e715e93958787d5ecd
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI877C.tmp

          • Path C:\Windows\Installer\MSI877C.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.1MB
          • SHA256 681c619809d52eade08d1d8fbca4ea186b864d7a2dd2358fcf3822903c4cc934
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {bd9c73ba-7c1a-4d9b-9e93-06bb0e22a2f1}_OnDiskSnapshotProp

          • Path \??\Volume{e2a40a55-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{bd9c73ba-7c1a-4d9b-9e93-06bb0e22a2f1}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 668d6ef64a8a599af46dad5e0647b578123fef1329ff9e0ae5afe8001a075c8e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1332-194-0x0000000001430000-0x00000000014AE000-memory.dmp

          memory/2368-3-0x0000000001900000-0x000000000190C000-memory.dmp

          memory/2368-7-0x0000000006000000-0x00000000065A4000-memory.dmp

          memory/2368-2-0x0000000005890000-0x00000000058A0000-memory.dmp

          memory/2368-5-0x0000000005840000-0x0000000005868000-memory.dmp

          memory/2368-6-0x00000000058A0000-0x0000000005A50000-memory.dmp

          memory/2368-4-0x00000000057B0000-0x0000000005844000-memory.dmp

          memory/2368-1-0x00000000018E0000-0x00000000018E8000-memory.dmp

          memory/2368-0-0x0000000005890000-0x00000000058A0000-memory.dmp

          memory/2368-11-0x00000000075B0000-0x000000000762E000-memory.dmp

          memory/2368-8-0x0000000005890000-0x00000000058A0000-memory.dmp

          memory/3340-127-0x0000000000C00000-0x0000000000C7E000-memory.dmp

          memory/3340-200-0x0000000000C00000-0x0000000000C7E000-memory.dmp

          memory/3540-126-0x0000000005EA0000-0x0000000005F1E000-memory.dmp

          memory/3540-207-0x0000000005EA0000-0x0000000005F1E000-memory.dmp

          memory/3716-210-0x0000000000D50000-0x0000000000DFA000-memory.dmp

          memory/3716-211-0x000000001B8A0000-0x000000001B90A000-memory.dmp

          memory/3716-216-0x000000001B910000-0x000000001B92A000-memory.dmp

          memory/3716-215-0x0000000002D70000-0x0000000002D8A000-memory.dmp

          memory/3716-214-0x000000001C280000-0x000000001C406000-memory.dmp

          memory/3716-213-0x000000001BF40000-0x000000001C0F0000-memory.dmp

          memory/3716-212-0x000000001BCF0000-0x000000001BD84000-memory.dmp

          memory/3716-222-0x0000000001480000-0x000000000148C000-memory.dmp

          memory/3720-205-0x0000000004310000-0x00000000043E5000-memory.dmp

          memory/3720-176-0x0000000003C90000-0x0000000003D24000-memory.dmp

          memory/3720-260-0x0000000004090000-0x00000000040D7000-memory.dmp

          memory/3720-248-0x0000000004090000-0x00000000040D7000-memory.dmp

          memory/3720-199-0x0000000003E40000-0x0000000003EAA000-memory.dmp

          memory/3720-221-0x0000000004090000-0x00000000040D7000-memory.dmp

          memory/3720-220-0x0000000001480000-0x000000000148B000-memory.dmp

          memory/3720-233-0x0000000004090000-0x00000000040D7000-memory.dmp

          memory/3720-180-0x0000000003EE0000-0x0000000004090000-memory.dmp

          memory/3720-201-0x0000000004130000-0x00000000041C2000-memory.dmp

          memory/3720-170-0x0000000003B40000-0x0000000003B5A000-memory.dmp

          memory/3720-195-0x0000000003D80000-0x0000000003DD0000-memory.dmp

          memory/3720-203-0x0000000003D30000-0x0000000003D71000-memory.dmp

          memory/3828-219-0x0000000000D10000-0x0000000000D1C000-memory.dmp

          memory/4068-217-0x00000150D9F10000-0x00000150D9F1C000-memory.dmp

          memory/4324-193-0x0000000003030000-0x00000000030AE000-memory.dmp

          memory/4536-84-0x0000000002770000-0x0000000002798000-memory.dmp

          memory/4536-93-0x0000000002840000-0x000000000284E000-memory.dmp

          memory/4920-40-0x00000000024D0000-0x00000000024FE000-memory.dmp

          memory/4920-52-0x0000000004BF0000-0x0000000004DA0000-memory.dmp

          memory/4920-48-0x00000000049A0000-0x0000000004A34000-memory.dmp

          memory/4920-44-0x00000000024C0000-0x00000000024CC000-memory.dmp