Analysis

  • max time kernel
    148s
  • max time network
    127s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    16/09/2026, 18:26

General

  • Target
    ScreenConnect.ClientSetup (3).msi
  • Size 9.8MB
  • Sample260916-w3prbssvbv
  • SHA256 489395a266a57ca64fabf186d760126de781768250c8e5271ac2b25100019be9
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 4 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 9 IoCs
  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 17 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 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 (3).msi"
    1⤵
    • Badlisted process makes network request
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:1828
  • 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:5740
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 1C29E5EE437C0FBBC9ADA153E5BB3ACF C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2044
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIE01A.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240705875 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4576
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIE82A.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240707656 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1616
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIE2F6.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240772078 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4812
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2472
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 0071068F1568DD58221282A8F7B45886
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:880
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 30F7F7E353697C8698AC4E7AE1780FB8 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:564
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2508
    • C:\Program Files (x86)\ScreenConnect Client (efe0a5160534f0c3)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (efe0a5160534f0c3)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-qv2cxg-relay.screenconnect.com&p=443&s=7bf121c4-3ace-43a7-935e-235e5f652b05&k=BgIAAACkAABSU0ExAAgAAAEAAQDJp%2fjsnj%2fHEqzJmvbvKxDZOU7mPE66NZPNa6LfuR1Mi%2bSogjyD8LUBaiygE8y%2fwodJJwW9htEuoBSacBWL4LF3jFIOno%2bKNyWo8Bq%2biVf1oK1UiZORqPUHF7rspT4%2bHBVNca11XUtG1%2bdslX6HaKTu1Az7MBijKFcQepNJkyG8xjQpurq46gZ1gbRFXSk3PYEtyFuA1PRiD2WCgp8ybmlpxf2kugx6fq1OsDJjETmmW3xlfMZ5hasXsIMuq2RkkiiBKiRe28b%2bYw5fSBM6%2fgMZr1Is59rMLiXrlElzGEQ3fZcFgbJ4dCySsix0N34viyUu9hdm5IB2VnDz7MaFOle%2b"
      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:1584
      • C:\Program Files (x86)\ScreenConnect Client (efe0a5160534f0c3)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (efe0a5160534f0c3)\ScreenConnect.WindowsClient.exe" "RunRole" "a3f055ba-480d-43be-9fac-301ecbff1d50" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:3980
      • C:\Program Files (x86)\ScreenConnect Client (efe0a5160534f0c3)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (efe0a5160534f0c3)\ScreenConnect.WindowsClient.exe" "RunRole" "bbe00ece-c90d-48a6-bcf5-84861fe58d61" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4612

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5a32ab.rbs

          • Path C:\Config.Msi\e5a32ab.rbs
          • Size 214KB
          • SHA256 d8d7dc53caf18bc3b69c1a0d6a0e41febcc9f56d69db54ce93722d4867352589
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (efe0a5160534f0c3)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (efe0a5160534f0c3)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (efe0a5160534f0c3)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 27e873d0fceefdd1a12ca77e3bbecec2ece7acdba433b47dca102c35e1c5896c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (efe0a5160534f0c3)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 78fa9cf69577f6990275c7c472f7114f9d0c85e660f3b9c81b085fc3cfbc8673
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (efe0a5160534f0c3)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 5956f9afb3ba610c38b2cfda88dd15be98783963769a12020c93ce05e749b3c3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (efe0a5160534f0c3)\ScreenConnect.Core.dll
          • Size 582KB
          • SHA256 4eab8752d05cd31bafd07edde7d18061cb63eea99af3132460e6dc08bb5f9e73
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (efe0a5160534f0c3)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ec4de5e6e9c079a30a5780d79ee662e0a4c6d009f0e3f911edc560973fb17d1e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (efe0a5160534f0c3)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (efe0a5160534f0c3)\ScreenConnect.WindowsClient.exe
          • Size 685KB
          • SHA256 2763b953657e3c4d6b2f952218a1e1963bcd6971f0b1102d99bb7efea04ceb29
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (efe0a5160534f0c3)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (efe0a5160534f0c3)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 7511e679597572782241ff989c065c02f9f5a12ab37290b69a27226eda57ce75
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (efe0a5160534f0c3)\system.config
          • Size 966B
          • SHA256 956ad2980245fca621e3a5489a70f9adbe4b4b9bce7f8703abeca43c7ed52fa5
          • MD5 SHA1 SHA512 TLSH

          MSIE01A.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIE01A.tmp
          • Size 1.1MB
          • SHA256 400ff5b9a4439339876282909b23c397ffa208f4bcf64460fa2521284acf0b6e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIE01A.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIE01A.tmp-\ScreenConnect.Core.dll
          • Size 572KB
          • SHA256 74f2d225b492eb77a5654bcaafec5162d0c5f72de884daa4c32daf54e2bff3d7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIE01A.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 2022f13b1f562d3cbef3a3926f0370a2de64e57ff281a121f90001a47499a356
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIE01A.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 93f910f732855000861c1b4e6c55a2dee0a8cbb2172d89c7a2bc99053746c193
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSIE82A.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIE82A.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 361bbc692084841e4c8d22c89ca89c711d0fe17bc8759241736531a2f28de25b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI37FA.tmp

          • Path C:\Windows\Installer\MSI37FA.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e5a32aa.msi

          • Path C:\Windows\Installer\e5a32aa.msi
          • Size 9.8MB
          • SHA256 489395a266a57ca64fabf186d760126de781768250c8e5271ac2b25100019be9
          • MD5 SHA1 SHA512 SSDEEP TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (efe0a5160534f0c3)\user.config
          • Size 520B
          • SHA256 9be1b7d0c9b262fa458d09ce6b0dceb18082cf149660d9ab56dfdbc2b72123ef
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (efe0a5160534f0c3)\user.config
          • Size 683B
          • SHA256 70a8827a90b4953b7d83639fd7aacb971a484320de001c5d2c8d054a836e27c7
          • MD5 SHA1 SHA512 TLSH

          xbadfc2b.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (efe0a5160534f0c3)\xbadfc2b.newcfg
          • Size 883B
          • SHA256 689f19003da253d997f60d8dc6c594bfe9f4e5b3f6ef1a77390936133cc449fa
          • MD5 SHA1 SHA512 TLSH

          {0fc1218b-d8f4-443f-ba65-b52626200b70}_OnDiskSnapshotProp

          • Path \??\Volume{9cfaea72-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{0fc1218b-d8f4-443f-ba65-b52626200b70}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 433c33a8775185720a4a2dd61f99f598fced2b544084376a675c2b531c32b57d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1584-187-0x0000000004F10000-0x0000000004FE6000-memory.dmp

          memory/1584-142-0x0000000002280000-0x000000000229A000-memory.dmp

          memory/1584-182-0x00000000049E0000-0x0000000004A4C000-memory.dmp

          memory/1584-183-0x0000000004D20000-0x0000000004DB2000-memory.dmp

          memory/1584-148-0x00000000047D0000-0x0000000004866000-memory.dmp

          memory/1584-185-0x00000000048D0000-0x0000000004911000-memory.dmp

          memory/1584-152-0x0000000004AD0000-0x0000000004C80000-memory.dmp

          memory/1584-165-0x0000000004920000-0x0000000004970000-memory.dmp

          memory/1616-64-0x0000000005280000-0x00000000052A8000-memory.dmp

          memory/3980-210-0x0000000002BA0000-0x0000000002BBA000-memory.dmp

          memory/3980-206-0x000000001B630000-0x000000001B69C000-memory.dmp

          memory/3980-207-0x000000001B9E0000-0x000000001BA76000-memory.dmp

          memory/3980-205-0x00000000009C0000-0x0000000000A70000-memory.dmp

          memory/3980-209-0x000000001BC30000-0x000000001BDE0000-memory.dmp

          memory/3980-211-0x000000001BF70000-0x000000001C0F8000-memory.dmp

          memory/3980-212-0x0000000002BC0000-0x0000000002C01000-memory.dmp

          memory/4576-25-0x0000000002680000-0x000000000268C000-memory.dmp

          memory/4576-34-0x0000000005F00000-0x00000000064BA000-memory.dmp

          memory/4576-21-0x00000000053F0000-0x000000000541E000-memory.dmp

          memory/4576-33-0x0000000005790000-0x0000000005940000-memory.dmp

          memory/4576-29-0x00000000054C0000-0x0000000005556000-memory.dmp