Analysis

  • max time kernel
    149s
  • max time network
    130s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    07/11/2026, 12:19

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 14.3MB
  • Sample261107-phancacz4p
  • SHA256 5e2220b3c4e0664a589a386e9c49e034b49ca0b06a25d6d6c0f6d39c25aed614
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 2 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 9 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).

  • 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 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 SetWindowsHookEx 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⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4896
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.5.9742\7590ed4e1c1f6875\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
      • Suspicious use of SetWindowsHookEx
      PID:5520
  • 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 SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:936
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 760047915FD7B862202632984C5D0C4A C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:948
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI4944.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240732687 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1572
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI4E94.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240733890 11 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:4556
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI55D9.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240735843 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4924
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:364
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 9480612D05CCACDE79E01DD054C10911
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4412
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 9BBDB00B8B2BE3717E082F27437C72B3 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:556
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1764
    • C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-vffgqh-relay.screenconnect.com&p=443&s=09887b28-d78e-441b-9c81-125fa4f8adaa&k=BgIAAACkAABSU0ExAAgAAAEAAQANsnuCboAb1Hju755ews%2bUb4UnlKhBEWTPilYGN6m90zk8oqvg2WPAMYyXJNzz8bufc95z5y6G2oMvSk0mPEcqPwXSYp0gxmucy50jDifrq7mbTEuDX4kUgrPWpgrVxe1YNaXIEJdM89Ge7%2fJ3KSKU7nNx0z%2fAIGbOMXDwx7SIWDYog4KfOwdrAiQLTsaP2sJ1f6FM2tus7DHZr7OyigfdnmLF29vLFa7BkY%2fgeLjVvvF4lCOXXYlYZCv3OKCuo0ztGH%2f5Z2UGUyXlVDaUvJ4YkCwiG8tXJNevmAfufdcxDH9jddL7FBUuDFoLVBX1QU8xr7hmeRlfCKSIEQke3cq9&c=NEW&c=&c=KISH&c=&c=&c=&c=&c="
      1⤵
      • Sets service image path in registry
      • Drops file in System32 directory
      • Executes dropped EXE
      • Loads dropped DLL
      • 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:1364
      • C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.WindowsClient.exe" "RunRole" "d3a5478f-a33b-4bb2-bf1d-90a713fee763" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:5172
      • C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.WindowsClient.exe" "RunRole" "0011f024-44e2-485f-8aed-5dc171c62b17" "System"
        2⤵
        • Executes dropped EXE
        • Reads the TCP/IP host and domain name from the registry
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4492

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e59a36b.rbs

          • Path C:\Config.Msi\e59a36b.rbs
          • Size 214KB
          • SHA256 3d2baec3a2267b0e01ce4132c95091043e796a4a59a2b2cc3ed220b829b6ea0d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 27e873d0fceefdd1a12ca77e3bbecec2ece7acdba433b47dca102c35e1c5896c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 78fa9cf69577f6990275c7c472f7114f9d0c85e660f3b9c81b085fc3cfbc8673
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 5956f9afb3ba610c38b2cfda88dd15be98783963769a12020c93ce05e749b3c3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.Core.dll
          • Size 582KB
          • SHA256 4eab8752d05cd31bafd07edde7d18061cb63eea99af3132460e6dc08bb5f9e73
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ec4de5e6e9c079a30a5780d79ee662e0a4c6d009f0e3f911edc560973fb17d1e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.WindowsClient.exe
          • Size 685KB
          • SHA256 2763b953657e3c4d6b2f952218a1e1963bcd6971f0b1102d99bb7efea04ceb29
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 7511e679597572782241ff989c065c02f9f5a12ab37290b69a27226eda57ce75
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\app.config
          • Size 1KB
          • SHA256 6b6895cdaddf08e0d0859ef61ec8ba087290dc5836dedb95a180d42f381790e2
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (7590ed4e1c1f6875)\system.config
          • Size 954B
          • SHA256 1b9d22ad39f36aeef74ea5cb73c1c5dbf937d4531f59bc2753d99e3ba270856c
          • MD5 SHA1 SHA512 TLSH

          MSI4944.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4944.tmp
          • Size 1.1MB
          • SHA256 400ff5b9a4439339876282909b23c397ffa208f4bcf64460fa2521284acf0b6e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4944.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4944.tmp-\ScreenConnect.Core.dll
          • Size 572KB
          • SHA256 74f2d225b492eb77a5654bcaafec5162d0c5f72de884daa4c32daf54e2bff3d7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4944.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 2022f13b1f562d3cbef3a3926f0370a2de64e57ff281a121f90001a47499a356
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4944.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 93f910f732855000861c1b4e6c55a2dee0a8cbb2172d89c7a2bc99053746c193
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4E94.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4E94.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 361bbc692084841e4c8d22c89ca89c711d0fe17bc8759241736531a2f28de25b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.5.9742\7590ed4e1c1f6875\ScreenConnect.ClientSetup.msi
          • Size 11.8MB
          • SHA256 68a53cb4e2da3d6a2ef08129f0a4f17f9e9529ff60d1f0548a93af7e4277fbfd
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIAB4B.tmp

          • Path C:\Windows\Installer\MSIAB4B.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          g10cuudd.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (7590ed4e1c1f6875)\g10cuudd.newcfg
          • Size 884B
          • SHA256 14610056c2d7847a1ffa0d942117b37ce9f7fc1113d8340670b89fba6a3323e1
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (7590ed4e1c1f6875)\user.config
          • Size 520B
          • SHA256 da39569511f0c08d0e0a2d04b7be506b747846bf957883b1c79fad21a73a5b33
          • MD5 SHA1 SHA512 TLSH

          vzfvur0n.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (7590ed4e1c1f6875)\vzfvur0n.newcfg
          • Size 683B
          • SHA256 48ac61a3057048a5e5fe87d0e62d2544b195f15cabf3239781f8c2ac9ef404df
          • MD5 SHA1 SHA512 TLSH

          memory/936-232-0x00000240D9210000-0x00000240D9BB4000-memory.dmp

          memory/1364-203-0x0000000003EB0000-0x0000000003EF1000-memory.dmp

          memory/1364-179-0x0000000003E60000-0x0000000003EB0000-memory.dmp

          memory/1364-205-0x0000000004220000-0x00000000042F6000-memory.dmp

          memory/1364-201-0x0000000004030000-0x00000000040C2000-memory.dmp

          memory/1364-155-0x0000000001330000-0x000000000134A000-memory.dmp

          memory/1364-200-0x0000000003F20000-0x0000000003F8C000-memory.dmp

          memory/1364-161-0x0000000003A40000-0x0000000003AD6000-memory.dmp

          memory/1364-165-0x0000000003CB0000-0x0000000003E60000-memory.dmp

          memory/1572-35-0x0000000003870000-0x000000000389E000-memory.dmp

          memory/1572-39-0x00000000038B0000-0x00000000038BC000-memory.dmp

          memory/1572-43-0x00000000059C0000-0x0000000005A56000-memory.dmp

          memory/1572-47-0x0000000005C10000-0x0000000005DC0000-memory.dmp

          memory/4556-77-0x0000000006140000-0x0000000006168000-memory.dmp

          memory/4896-4-0x00000000059C0000-0x00000000059E8000-memory.dmp

          memory/4896-2-0x0000000001AE0000-0x0000000001AEC000-memory.dmp

          memory/4896-13-0x00000000747F0000-0x0000000074FAC000-memory.dmp

          memory/4896-6-0x00000000059F0000-0x0000000005BA0000-memory.dmp

          memory/4896-7-0x0000000006160000-0x000000000671A000-memory.dmp

          memory/4896-5-0x00000000747F0000-0x0000000074FAC000-memory.dmp

          memory/4896-8-0x00000000747F0000-0x0000000074FAC000-memory.dmp

          memory/4896-3-0x0000000005900000-0x0000000005996000-memory.dmp

          memory/4896-11-0x00000000747F0000-0x0000000074FAC000-memory.dmp

          memory/4896-0-0x0000000074802000-0x0000000074803000-memory.dmp

          memory/4896-1-0x0000000001AB0000-0x0000000001AB8000-memory.dmp

          memory/4896-9-0x00000000747F0000-0x0000000074FAC000-memory.dmp

          memory/5172-226-0x000000001B3A0000-0x000000001B40C000-memory.dmp

          memory/5172-227-0x000000001B840000-0x000000001B8D6000-memory.dmp

          memory/5172-228-0x000000001BA90000-0x000000001BC40000-memory.dmp

          memory/5172-229-0x00000000028B0000-0x00000000028CA000-memory.dmp

          memory/5172-230-0x000000001BDD0000-0x000000001BF58000-memory.dmp

          memory/5172-225-0x00000000006E0000-0x0000000000790000-memory.dmp