Analysis

  • max time kernel
    149s
  • max time network
    133s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    10/07/2026, 06:14

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample260710-gzhfhsfx21
  • SHA256 f187df6caee5119f1548106f216b5ea864860564b9d3c70cbbadec19e6f2b2af
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 5 IoCs

    Network request originating from process or tool commonly abused by malware.

  • 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.

  • 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 42 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 10 IoCs
  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 13 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 7 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 7 IoCs
  • Suspicious use of SendNotifyMessage 5 IoCs
  • Suspicious use of WriteProcessMemory 9 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⤵
    • Badlisted process makes network request
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:1564
  • 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 WriteProcessMemory
    PID:4888
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 6EFCAEA281E778FDD5D1E174A01789CB C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1668
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIB253.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240694046 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2352
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIB67B.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240694906 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2964
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIF961.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240712062 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4700
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4432
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 675414F1E3078CEFB61E5EE23EC6E208
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1372
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding CF9CAF98D33774ADB9604ABE5F510B75 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:3200
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1400
    • C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-mhr7aa-relay.screenconnect.com&p=443&s=117cf3aa-bd7a-4293-b930-65db6bcbcf69&k=BgIAAACkAABSU0ExAAgAAAEAAQD9Wu8CkvnuWWSs64VM5AIikVzL3ND2CHawjp4pO4X2jzjq%2bwP4vpXtGHP35gTEswTC2LeV3qRwbQ%2b5jso0XogtwiskP22AONJ5pXsApN8gqIvBLhKE7YDY5j0XnUz%2fR3FUxuH%2bGm7QnYibgjoUON5ThDRrRWgmFplDKbBRJYSH73YsmPdnyPKn%2f%2bCqHSdGQQaogr562%2bhqHutsQqiJbV6r4JEwHT8PuZGFQXwNWBG08bIEJqY5J7Hba2lFKImmcdBlc%2fG%2fqtReOzhR6v%2fejZoNREga%2fXNPDhGydo4GyMBgjE5QMEnEPmQfUeg%2btLhIFqxCcjm0nXWhAVx46G%2fcksqg"
      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:1472
      • C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.WindowsClient.exe" "RunRole" "d0be640f-c7b8-48b4-bc7e-6020314925fc" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4672
      • C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.WindowsClient.exe" "RunRole" "a49aecc8-8068-4e20-a549-d3817dcafe22" "System"
        2⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4700

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e59450f.rbs

          • Path C:\Config.Msi\e59450f.rbs
          • Size 214KB
          • SHA256 7b639fd8401ca33503c5a48044da1f499fdd13c20e41268d62910d6227f2a29a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 4010ea184982e71ad71e76b43266488c954f665324b89ef042cea9e463a60c9d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.ClientService.dll
          • Size 91KB
          • SHA256 6e6aa42b107d3e82b7b7dc18a75eee3f09e9f268788c0a7edbbc617152adf178
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 a94ecccb5b88e3860d619fbb3b87ff4af6448240ab65b89d610f348d75e793f2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.Core.dll
          • Size 577KB
          • SHA256 eedbd9ba4755f238af397c71b575082e18a31eabacc22abb4949f92fe991e169
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 305663a05c77c8058569a976db740aa2f20b66583f0381059633b628376570fc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 ce75ee1188726b49d46477166faac6f8715ca1aa4afc5b8a687fcbfcd541c0c2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (2cc43cbe89363313)\system.config
          • Size 970B
          • SHA256 2ff160457fd94c2c2014de4725033740f01acd7a6941865e7d61b44abeb802a0
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 f1d12d26a5b211f55a5cdc6cc477fcf49f7078aed5078ebc70aa9268c6b6729c
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 2a309b134ee2630cd8ac742660570286e0d0349d0181a317abf45a9de8058daf
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 e27c560d58096d1beb526f1433b9c560590b6617dc00b14148b89ed6bd11fd50
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 356c78440bb99f36fd5d06591b716d0b89c73e6ada98f91dbd40773879765846
          • MD5 SHA1 SHA512 TLSH

          rundll32.exe.log

          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\rundll32.exe.log
          • Size 746B
          • SHA256 ddebb6b1094dbef9e96754a74ebd4761d857864c9bd0b5f20a97259a6d7c8fe0
          • MD5 SHA1 SHA512 TLSH

          MSIB253.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIB253.tmp
          • Size 1.1MB
          • SHA256 18bacfd2a7c95800b6279cb8731bf03c8bbb526f5bc3790254a8e06d7ceee8ad
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIB253.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIB253.tmp-\ScreenConnect.Core.dll
          • Size 567KB
          • SHA256 15fec18d3a8990cdb540897ede61227353165668048c001164fcd22233cc8390
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIB253.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 c1142cc3ae09a7d3b5392539c29cbeb585543a38c93e37e55d82cbe0bb56d588
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIB253.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ae3005e1ca932eccde09c479fde2ecf8ea2feeb908dec4f0c830eab671276454
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSIB67B.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIB67B.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 7c27380976a5befc5a947e129eb464123f46d06cf0eb7f984ced921f36e1d0e7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI4703.tmp

          • Path C:\Windows\Installer\MSI4703.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e59450e.msi

          • Path C:\Windows\Installer\e59450e.msi
          • Size 9.8MB
          • SHA256 f187df6caee5119f1548106f216b5ea864860564b9d3c70cbbadec19e6f2b2af
          • MD5 SHA1 SHA512 SSDEEP TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (2cc43cbe89363313)\user.config
          • Size 683B
          • SHA256 3ad62dab1f49bb081c3a330869df8e3dd3ba34c76fdf8e783d2f91e312d10fa9
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (2cc43cbe89363313)\user.config
          • Size 520B
          • SHA256 35d470e23f249a35cba6c44aef4382470792717a7c675816053546fd0f69a49c
          • MD5 SHA1 SHA512 TLSH

          vfaqepvi.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (2cc43cbe89363313)\vfaqepvi.newcfg
          • Size 882B
          • SHA256 a85638807b1c27010ae652f121538514757e45d87964eaeba82ef891d8bc4ac0
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.1MB
          • SHA256 ba37f63e86f444b655b8ce313a89f0c0e29f7c9c922f238f4075ff93fd01c116
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {335baaef-aaf7-45cb-a636-91e810d80b2e}_OnDiskSnapshotProp

          • Path \??\Volume{63ef4f52-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{335baaef-aaf7-45cb-a636-91e810d80b2e}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 9fc382e466843fd37bf99a79ca0b90f8d4de223f1ad205bff3802083c3998484
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1472-163-0x0000000003F30000-0x0000000003FC4000-memory.dmp

          memory/1472-200-0x0000000004140000-0x0000000004181000-memory.dmp

          memory/1472-180-0x0000000004340000-0x0000000004390000-memory.dmp

          memory/1472-157-0x0000000001960000-0x000000000197A000-memory.dmp

          memory/1472-202-0x0000000004680000-0x0000000004756000-memory.dmp

          memory/1472-167-0x0000000004190000-0x0000000004340000-memory.dmp

          memory/1472-197-0x0000000004390000-0x00000000043FC000-memory.dmp

          memory/1472-198-0x00000000044A0000-0x0000000004532000-memory.dmp

          memory/2352-40-0x0000000005980000-0x0000000005F24000-memory.dmp

          memory/2352-39-0x0000000005220000-0x00000000053D0000-memory.dmp

          memory/2352-35-0x0000000004FD0000-0x0000000005064000-memory.dmp

          memory/2352-31-0x0000000004EF0000-0x0000000004EFC000-memory.dmp

          memory/2352-27-0x0000000004EB0000-0x0000000004EDE000-memory.dmp

          memory/2964-72-0x00000000054A0000-0x00000000054C8000-memory.dmp

          memory/4672-217-0x00000000002D0000-0x000000000037E000-memory.dmp

          memory/4672-218-0x000000001AEB0000-0x000000001AF1C000-memory.dmp

          memory/4672-220-0x000000001B2C0000-0x000000001B354000-memory.dmp

          memory/4672-221-0x000000001B510000-0x000000001B6C0000-memory.dmp

          memory/4672-222-0x0000000000B50000-0x0000000000B6A000-memory.dmp

          memory/4672-223-0x000000001C900000-0x000000001CA86000-memory.dmp