Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    25/08/2026, 18:13

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 14.6MB
  • Sample260825-wtqbhatwcx
  • SHA256 f1cfb4ac8fa42e87cb723be8e23ec95ebc0ceb10e988105e1a22623a5d382683
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • 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.

  • Signed with revoked ConnectWise certificate 2 IoCs

    Binary is signed using a ConnectWise certificate revoked for key compromise.

  • 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 22 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 2 IoCs
  • Drops file in Program Files directory 19 IoCs
  • Drops file in Windows directory 17 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 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 2 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 7 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⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:4676
  • 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:3708
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding D4DCEE8ACEF5462F2C671CD972C065AD C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4924
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIE0B2.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240771765 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4604
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:5632
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 067C19193B897D3AF8415ABE74E4C232
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4524
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 0095D499AFABC1ADD1036C0D82C3AF18 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1296
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3952
    • C:\Program Files (x86)\ScreenConnect Client (a0ede2b36ccea361)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (a0ede2b36ccea361)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=207.189.4.110&p=8041&s=eda577f4-7454-4fe6-8cde-8151cc53cb03&k=BgIAAACkAABSU0ExAAgAAAEAAQAle4kyzDRj%2ft0qCygiq%2bi%2f7yqnUgHta6BJrBZITrsF%2fJo%2frUK%2bsJ1iulzKu7zJU8Wg1HhUgHC%2bajo5v7YQ0p7T5CAzxZjfErlqjdwKH2UqJ5c%2frvRbZpDvX4kVBvovN0XqPXn6csP7b6oBPiTE911aoNYsS3yDPBvD3tBoPfAW2FEDtmzGqtHus18nA5Rw76gc8KM3SJeKtzqHN9xm%2f%2fCs7Cy4bBnw2wh7LordfEccQJtxQwy4S4eS8OktoBOpq79pBqrRmUb2CBPEgyEMaEhpEc3abzncO%2b%2fu8BNyf%2fApAtgYwa4EQdyf%2bhx7FEypvgGaJpwqiYviwmPliNgE2wmx"
      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:5888
      • C:\Program Files (x86)\ScreenConnect Client (a0ede2b36ccea361)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (a0ede2b36ccea361)\ScreenConnect.WindowsClient.exe" "RunRole" "172138c4-ac96-4528-993d-1e76fab3a1c5" "User"
        2⤵
        • Executes dropped EXE
        PID:1300
      • C:\Program Files (x86)\ScreenConnect Client (a0ede2b36ccea361)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (a0ede2b36ccea361)\ScreenConnect.WindowsClient.exe" "RunRole" "852bb80c-25b9-4c80-93b0-cd0cd32e7cc1" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:5132

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5a2e27.rbs

          • Path C:\Config.Msi\e5a2e27.rbs
          • Size 214KB
          • SHA256 b4f2cac26ab43aa5e222ed6d124db3811f85c44c35cd555f44885950c6f6c991
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (a0ede2b36ccea361)\Client.Override.en-US.resources
          • Size 245B
          • SHA256 4aa60e71e2a95cff9837b2dedddfa5a2d6e2e685826d1ff8019b9b3b9a02f4cf
          • MD5 SHA1 SHA512 TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (a0ede2b36ccea361)\Client.Override.resources
          • Size 35KB
          • SHA256 fcd076b4370d16bdbee7003eb9b22a6bae3e86a03ed313e1a758ff8a99bcf3d8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (a0ede2b36ccea361)\Client.en-US.resources
          • Size 49KB
          • SHA256 b26b7a988aba7f94473468cae82846bb672a422b016ed1907d187a5c3bb0f8a0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (a0ede2b36ccea361)\Client.resources
          • Size 33KB
          • SHA256 e0d0e5d951ef955f22d110b65b3fedfb8b1710491563d7c541f5e3d9fd4ccee8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a0ede2b36ccea361)\ScreenConnect.Client.dll
          • Size 202KB
          • SHA256 7a4fd2e1cc26200e44b22a17fc6324734e676fa8d5b48a977b50b82c81084a38
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a0ede2b36ccea361)\ScreenConnect.ClientService.dll
          • Size 77KB
          • SHA256 4cad8e6604b38b2d1d50a614a24a9c5b6541228eae796e4d460ebbee97617ccc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (a0ede2b36ccea361)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 7976bc6647fead449fdd424f7ccb5150b5d896b4db23782493a11580a2515244
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a0ede2b36ccea361)\ScreenConnect.Core.dll
          • Size 549KB
          • SHA256 028c2aa8290b51b14f6668f1318ccddac885fb2ebc34c744dda62b28767115c9
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a0ede2b36ccea361)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 1d682bd780fff57619ddbbebdf96a3f933483cc0a7caa194559e5f04f4093a61
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a0ede2b36ccea361)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (a0ede2b36ccea361)\ScreenConnect.WindowsClient.exe
          • Size 595KB
          • SHA256 446dea870ba05ccb6fb0038aca0d5d5bf5b8423b51f9ff40da74bb9fc603f4c4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (a0ede2b36ccea361)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a0ede2b36ccea361)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 838KB
          • SHA256 c36e1b629985cf5379733de9c2d645446cb3333f8660bf137a46fb227ef170e4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (a0ede2b36ccea361)\app.config
          • Size 849B
          • SHA256 6d5c5d6c2446387c7b9040ff0eeb02f21b28cf0fd39154c0c65c7b1668d6e09c
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (a0ede2b36ccea361)\system.config
          • Size 947B
          • SHA256 5d490713150ae9dbedb87d3e778b9f00fe964045a56201e8df02c0fd85ae3c9c
          • MD5 SHA1 SHA512 TLSH

          MSIE0B2.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIE0B2.tmp
          • Size 1.0MB
          • SHA256 263f63468a49d9958d65745a023c7b150f05432a309dcecdcfc47e62186b7e39
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIE0B2.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIE0B2.tmp-\ScreenConnect.Core.dll
          • Size 539KB
          • SHA256 abb34dda325ea28f52110212cdf9dc28c7b1375a1b7447ace6054b0684bb486c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIE0B2.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 d634d4d6de70069360b1c897299e06510cef7c1c7531e2464575b300fc6777c8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIE0B2.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 bea9ff7531447973739e84cb1a3a591ba882838efd03705418f8e6f403ff4b4a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI3441.tmp

          • Path C:\Windows\Installer\MSI3441.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e5a2e26.msi

          • Path C:\Windows\Installer\e5a2e26.msi
          • Size 14.6MB
          • SHA256 f1cfb4ac8fa42e87cb723be8e23ec95ebc0ceb10e988105e1a22623a5d382683
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 0f7ef1bb0cfbc5238ba0c9f1dfb96cb62f821d09f434843ebddc12a62cd9a6b0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {49d5d763-26fe-4545-ac0d-53d4321259be}_OnDiskSnapshotProp

          • Path \??\Volume{c61f3bad-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{49d5d763-26fe-4545-ac0d-53d4321259be}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 9a30f38bd42cb8c3d5dd1ea02bf7664373b82eb502ae2d28de76d8ca700ef63c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1300-122-0x000000001C3E0000-0x000000001C568000-memory.dmp

          memory/1300-121-0x000000001C230000-0x000000001C3DC000-memory.dmp

          memory/1300-124-0x0000000001930000-0x0000000001948000-memory.dmp

          memory/1300-119-0x00000000018F0000-0x0000000001926000-memory.dmp

          memory/1300-123-0x00000000018B0000-0x00000000018C8000-memory.dmp

          memory/1300-120-0x000000001BDE0000-0x000000001BE6E000-memory.dmp

          memory/1300-118-0x0000000000FA0000-0x0000000001038000-memory.dmp

          memory/4604-22-0x0000000005720000-0x000000000572A000-memory.dmp

          memory/4604-26-0x0000000005870000-0x00000000058FE000-memory.dmp

          memory/4604-18-0x00000000057B0000-0x00000000057DE000-memory.dmp

          memory/4604-30-0x0000000005AB0000-0x0000000005C5C000-memory.dmp

          memory/4604-31-0x0000000006220000-0x00000000067DA000-memory.dmp

          memory/5888-85-0x0000000004350000-0x00000000044FC000-memory.dmp

          memory/5888-106-0x0000000004500000-0x0000000004541000-memory.dmp

          memory/5888-108-0x0000000004870000-0x0000000004945000-memory.dmp

          memory/5888-104-0x0000000004680000-0x0000000004712000-memory.dmp

          memory/5888-103-0x00000000045A0000-0x00000000045D6000-memory.dmp

          memory/5888-99-0x0000000004550000-0x00000000045A0000-memory.dmp

          memory/5888-81-0x0000000004110000-0x000000000419E000-memory.dmp

          memory/5888-75-0x0000000001190000-0x00000000011A8000-memory.dmp