Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    04/08/2026, 12:13

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 12.2MB
  • Sample260804-pd4evswtdy
  • SHA256 c5ef36dbedc91430a26637ced49d3119589ab8fdc276ae3b71fd908bd5d685da
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 8 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.

  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops file in System32 directory 10 IoCs
  • 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.

  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 13 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 42 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 9 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 10 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe
    "C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3704
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.5.3.9691\3a1d60ad5d6d5925\ScreenConnect.ClientSetup.msi" SC_EXE_PATH="C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe"
      2⤵
      • Badlisted process makes network request
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:1896
  • 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:4164
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding AE6E2ABDE88E91BB59ABABA1927C1014 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3480
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIA544.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240690578 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4076
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIAAB3.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240691906 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4200
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIA39B.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240755625 19 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4324
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:1664
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 2D61ECF0FC6284220F84D3D3925A6487
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2824
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 5FE3E2AF39D7EE1BDDF075AA2B5592EE E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4880
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4588
    • C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-dxaly9-relay.screenconnect.com&p=443&s=140da09b-f525-4e07-88a5-20e182d3a09e&k=BgIAAACkAABSU0ExAAgAAAEAAQABCvD24glS4aFSffotIe4wEpzD7sUQqoWI7m2TPFfGYRQPX4RsEFJPb4SpktKxBq1pmrU9Xbx2hHCXFBCxjD%2fwkhMLhXBQfRIKwYL8fcGFs6svlZ6lRnVpW7%2fbsXsr8zRc1sweSnLCVEm5t1uZrS6KuBwP2dbAgi8l2h2TE7kTgL8TViCIXvKZRIHDhlMD%2fTUaJphbvhg3CvR0r53xG5zp%2fmISbmQd6jLqNDbcUk%2fH9IE%2bEnBT0VMNRzNfSn6SLLQGhJZKfxpLPA6YoLx2n1b2pA2Uyui1TroE4OIUboK0UrNDl%2blOZ4N4YR9ap54%2f%2btCewLVpGxvFq4Zf8QV%2fM5Ho&c=79&c=02&c=03&c=04&c=&c=&c=&c="
      1⤵
      • Sets service image path in registry
      • Drops file in System32 directory
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:224
      • C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.WindowsClient.exe" "RunRole" "469fc690-47fb-4663-a319-6dcfe44f3827" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:5056
      • C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.WindowsClient.exe" "RunRole" "c0599297-4bb9-42f0-b8a5-fb61bb3dacac" "System"
        2⤵
        • Drops file in System32 directory
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4308

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e59f237.rbs

          • Path C:\Config.Msi\e59f237.rbs
          • Size 214KB
          • SHA256 7ca31d2c8c031a3da0f693edbd8e8922d405d9a35ac04ac3078c6f3d4ddf1d04
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 8e5531c2b302f9c95ed32ac7481d3535b6d51147257d317686c07ea1a9cb8362
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 ed32fe0d924959020cbef0534a7ba612e94263ccc74837475f3b5a6a726acad0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 16b4c273a25526e7262716ebe9d46480962347191a034595f18be740d9ce1e17
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.Core.dll
          • Size 579KB
          • SHA256 f64cb7ab5f105c22348a22e02dd506ff45456884639fee0f322862112860af24
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 c50d6e8d93ed197dd0cfb647743b42a2a6a9289f6db04092f56cefd6d569663e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 4868b7997b9b4260be2df752a81a750388243cdbea37e4d82a9e0101cd29d0c7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (3a1d60ad5d6d5925)\system.config
          • Size 964B
          • SHA256 6cf0dd01674f3748969f5ecb8b307cc4de5f3763fd16b3d3c39ec52b1ab58cdf
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 dace5cd35660c81ebc760500f1979117969751e16c183fdae21f89e577c3ea67
          • MD5 SHA1 SHA512 TLSH

          BA74182F76F15A9CF514DEF352303C95

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\BA74182F76F15A9CF514DEF352303C95
          • Size 737B
          • SHA256 8e1136ed51666cc5b9f9b98847c67ce35ff60a6a54cf9a5734dc1e8defd26aa7
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 1a8a7b1729168dc2e75988121b12bac2537a9a75d367d2389477133dac5bbfe1
          • MD5 SHA1 SHA512 TLSH

          BA74182F76F15A9CF514DEF352303C95

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\BA74182F76F15A9CF514DEF352303C95
          • Size 248B
          • SHA256 3e6ce206a5471b910deb3608079b392d603fc6ad8870edd9ed8c4b398efad864
          • 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

          MSIA544.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIA544.tmp
          • Size 1.1MB
          • SHA256 de867af8055f81b7691f12175deb4c4e7f3bf97130e51761ed02182b0496e16f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIA544.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIA544.tmp-\ScreenConnect.Core.dll
          • Size 569KB
          • SHA256 e92d94613443befebb55b08f80d10a2fdbfc58233e8dc95cfb4466fde12964f7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIA544.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 d827d3575ca29f8a40ea5379c7df2b315fc72cbd93451de94e199740594b51bb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIA544.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 320b89343e896a8d2ebf537861d800a9aca88245cc3b5616bb5bea5cc6797fbb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSIAAB3.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIAAB3.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 dbf379b93127345a83282380aee634d0b70ec731acfeea76617c76e76fdc764f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.5.3.9691\3a1d60ad5d6d5925\ScreenConnect.ClientSetup.msi
          • Size 9.8MB
          • SHA256 6874a48c772f2d8ecbd0c16d40bd5de192bf901c398f07908fb552128f96ea50
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIF469.tmp

          • Path C:\Windows\Installer\MSIF469.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          0cszbng2.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (3a1d60ad5d6d5925)\0cszbng2.newcfg
          • Size 683B
          • SHA256 5a6cd3f827749418a2b3df3c6781a097e5b69c4365d01238dbbb0e99e799d4ee
          • MD5 SHA1 SHA512 TLSH

          3ms4eqzu.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (3a1d60ad5d6d5925)\3ms4eqzu.newcfg
          • Size 881B
          • SHA256 4a0a3aaa6696013fd2a235ac9495c904530090de097afb81ee0965da38f0f384
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (3a1d60ad5d6d5925)\user.config
          • Size 520B
          • SHA256 ed55001b1e726dfc76a86e63a1fe8f583f5117ffe599a2d76377d95bd7a453c5
          • MD5 SHA1 SHA512 TLSH

          memory/224-174-0x0000000004530000-0x00000000045C4000-memory.dmp

          memory/224-191-0x0000000004650000-0x00000000046A0000-memory.dmp

          memory/224-215-0x0000000004C30000-0x0000000004D06000-memory.dmp

          memory/224-168-0x0000000001F30000-0x0000000001F4A000-memory.dmp

          memory/224-213-0x00000000046A0000-0x00000000046E1000-memory.dmp

          memory/224-211-0x0000000004A50000-0x0000000004AE2000-memory.dmp

          memory/224-178-0x0000000004800000-0x00000000049B0000-memory.dmp

          memory/224-210-0x0000000004710000-0x000000000477C000-memory.dmp

          memory/3704-0-0x0000000005C60000-0x0000000005C70000-memory.dmp

          memory/3704-3-0x0000000001EB0000-0x0000000001EBC000-memory.dmp

          memory/3704-7-0x0000000006460000-0x0000000006A04000-memory.dmp

          memory/3704-4-0x0000000005C70000-0x0000000005D04000-memory.dmp

          memory/3704-2-0x0000000005C60000-0x0000000005C70000-memory.dmp

          memory/3704-8-0x0000000005C60000-0x0000000005C70000-memory.dmp

          memory/3704-5-0x0000000005C00000-0x0000000005C28000-memory.dmp

          memory/3704-6-0x0000000005D00000-0x0000000005EB0000-memory.dmp

          memory/3704-1-0x0000000001970000-0x0000000001978000-memory.dmp

          memory/4076-51-0x0000000004B50000-0x0000000004D00000-memory.dmp

          memory/4076-47-0x0000000004900000-0x0000000004994000-memory.dmp

          memory/4076-39-0x0000000004810000-0x000000000483E000-memory.dmp

          memory/4076-43-0x0000000004840000-0x000000000484C000-memory.dmp

          memory/4200-85-0x00000000031C0000-0x00000000031E8000-memory.dmp

          memory/4308-237-0x000000001B020000-0x000000001B061000-memory.dmp

          memory/5056-230-0x00000000007D0000-0x000000000087E000-memory.dmp

          memory/5056-231-0x000000001B3C0000-0x000000001B42C000-memory.dmp

          memory/5056-233-0x000000001B790000-0x000000001B824000-memory.dmp

          memory/5056-234-0x000000001B9E0000-0x000000001BB90000-memory.dmp

          memory/5056-235-0x0000000001150000-0x000000000116A000-memory.dmp

          memory/5056-236-0x000000001BF20000-0x000000001C0A6000-memory.dmp