Analysis

  • max time kernel
    148s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    03/10/2026, 12:25

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 19.8MB
  • Sample261003-pl5mwsda99
  • SHA256 b2fbc3aef0cd70fd1d60af6e1c1664f1233f39211d34aead124f511f8ea7dec0
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 3 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 47 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).

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 6 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 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:1456
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.6.9747\aa608af85502e1be\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:5616
  • 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:5540
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding DD0FB0E4FC26EBFC91C75671630FAE71 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3660
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSID3D5.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240702578 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2484
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIDA01.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240704000 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • Reads the TCP/IP host and domain name from the registry
        • System Location Discovery: System Language Discovery
        PID:2744
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIE397.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240706468 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4300
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2936
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 5C814424444CA5B7F111B22D4F334353
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4560
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 8A7A773DFA9E7A75A9105B76020B1C1B E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5808
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3724
    • C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-hq7plo-relay.screenconnect.com&p=443&s=f865e0fe-02b7-4881-99b1-cb9295148826&k=BgIAAACkAABSU0ExAAgAAAEAAQBJKFf3uqMKmPhCwnHPjx%2baRASaxMLIbYodYjNQKzJp4KAmMD%2f7PSf6Zx%2bsu7myNO7OUATDiNQTFYozUx%2bqJCMSAOpDj44b%2fZ3oWDNIMhfzPv%2fsuvSuBGU4sMJc3gShyWMLa8n%2bck4adqKpMS2VjJnauCdAytozN%2fZKbYhppyq8NCQ9bn11WNXIsFo4eMfjozdx2gmV1%2bzO2ksq8rJffyjwOuEekXUuGjzVBm3TWLTRiHajyw2ojhAiN%2fh8KdWJKk%2fYxJGUH1Yoh7Jmq2tj%2fL2I6Q59tYHMcLX%2f%2bhvoTXwYioyor%2fKQYbuEGDikDlkB3yjbFotEVRb9%2fqGkUfMKUvzk"
      1⤵
      • Sets service image path in registry
      • Drops file in System32 directory
      • Executes dropped EXE
      • Loads dropped DLL
      • 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:2732
      • C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.WindowsClient.exe" "RunRole" "c338a602-1416-4add-8980-3777d3ad6009" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4860
      • C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.WindowsClient.exe" "RunRole" "e22d3fbc-040f-4f6d-b34f-c19efeda1463" "System"
        2⤵
        • Drops file in System32 directory
        • 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:5936

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e592978.rbs

          • Path C:\Config.Msi\e592978.rbs
          • Size 214KB
          • SHA256 41347e26d0f4ec274cc86cee5b956caf6ea711ed72aae62afdafd85c186ff8b3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.Client.dll
          • Size 615KB
          • SHA256 787a02b1938e8c1ce52448b8779d2c9c47029664f97185177c2584e8f980abc4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.ClientService.dll
          • Size 176KB
          • SHA256 579fa008b8c96612163fd8a89a978140a652b3739867772df0711fca148705aa
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 d887f20ec383d7ce3a5727856bf7fa68ceb972108b6d0a5dd9924707e820dc24
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.Core.dll
          • Size 1.3MB
          • SHA256 5b2d14e237485c0164d865d8a94f8a8bed28ab0db52c6a7ef99f7ebb9648d324
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.Windows.dll
          • Size 1.9MB
          • SHA256 88dd22f6f0ca70d10c64ca919b0d8b6d73e84c1d567d4b8d15b6e9a9b60d6d8f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 239377f4d2345d2a4ff6e3cbebd83c6edb06db4daea389159d19770a2dfcb80c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (aa608af85502e1be)\system.config
          • Size 976B
          • SHA256 b59df65c735aa1f9257d0ec5f159511681708af9bc5864ab0f19f2dbe2b44d44
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 4a93bf1cb74badc134bad541a6fc2b8016e96f94182ef1207239d83dae05e2a6
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 345a8bbad32c8a374970fb300a4787516d658a193c5bdf6ec4744873c57672a9
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 28ae6733a7ce66ef8ff0cf6de23421423a60287029087b886caec245841ae968
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 30fda74a9ad33c026b3792e3edf42958bad01994e69f23999c56d8d64f3419fb
          • 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

          MSID3D5.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSID3D5.tmp
          • Size 1.9MB
          • SHA256 1dabfa60015c186a4315f16d46d9e53435dc259c52843e73dac0d04be92f9a84
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID3D5.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID3D5.tmp-\ScreenConnect.Core.dll
          • Size 1.3MB
          • SHA256 e5fd82d18c2dcaadbfc4b72b56573e819cc3e8ee6406f2edb982cc073dc607bb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID3D5.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 cf8505204b1458dac9cb3002fd5bbd5fac43c5b4702aa0153fb4b9a2cfcf954a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID3D5.tmp-\ScreenConnect.Windows.dll
          • Size 1.8MB
          • SHA256 ed1b4eb6c24c85392f692bf5863d9ccb76575051bb605360961b9d7624a371c6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSIDA01.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIDA01.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 390KB
          • SHA256 c469358d585fa9f1637a02d194e162e454d90b8dc7e4939f88b36e09b04a7a96
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.6.9747\aa608af85502e1be\ScreenConnect.ClientSetup.msi
          • Size 16.2MB
          • SHA256 90eae3df60ed0babd6228906f987aac0a8237b9c257b8ba57c440d4663c8d299
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI2BE9.tmp

          • Path C:\Windows\Installer\MSI2BE9.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          gsio52gg.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (aa608af85502e1be)\gsio52gg.newcfg
          • Size 683B
          • SHA256 59b84c487c307dd1943bde9eb5967cff418631d35accdb4b57210580b2bbe931
          • MD5 SHA1 SHA512 TLSH

          jyfeum4s.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (aa608af85502e1be)\jyfeum4s.newcfg
          • Size 882B
          • SHA256 6ddb98073ab6f297381fd9be5cc11742db6bd1153f1a5c16ad9818c96a8d3a68
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (aa608af85502e1be)\user.config
          • Size 520B
          • SHA256 7aa5dd2d23293e43b442d25c8876f494e566d137179824b8bb16b36d887fa9a7
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.1MB
          • SHA256 cc4a21d1bdd913b8f7f385ea0d2a47a2b6ee04328b7da53c88538761c15a9be0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {a13afc22-59a7-4327-9c72-63fe9edd246c}_OnDiskSnapshotProp

          • Path \??\Volume{8860bf69-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{a13afc22-59a7-4327-9c72-63fe9edd246c}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 91f525fc78038046ad813a262ff02fd6268f745b31974980c0910cc8d8c767d7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1456-2-0x0000000000F30000-0x0000000000F40000-memory.dmp

          memory/1456-8-0x0000000006400000-0x00000000065E0000-memory.dmp

          memory/1456-6-0x0000000006390000-0x00000000063F8000-memory.dmp

          memory/1456-1-0x0000000000F20000-0x0000000000F28000-memory.dmp

          memory/1456-7-0x0000000000F30000-0x0000000000F40000-memory.dmp

          memory/1456-5-0x0000000006230000-0x000000000638A000-memory.dmp

          memory/1456-0-0x0000000000F30000-0x0000000000F40000-memory.dmp

          memory/1456-4-0x0000000002430000-0x000000000243C000-memory.dmp

          memory/1456-9-0x0000000006B90000-0x0000000007134000-memory.dmp

          memory/1456-3-0x0000000000F30000-0x0000000000F40000-memory.dmp

          memory/2484-40-0x0000000004B50000-0x0000000004B7E000-memory.dmp

          memory/2484-44-0x0000000004B40000-0x0000000004B4C000-memory.dmp

          memory/2484-48-0x0000000004DA0000-0x0000000004EFA000-memory.dmp

          memory/2484-52-0x00000000050E0000-0x00000000052C0000-memory.dmp

          memory/2732-209-0x00000000045E0000-0x000000000467E000-memory.dmp

          memory/2732-214-0x0000000004AB0000-0x0000000004B86000-memory.dmp

          memory/2732-190-0x00000000044F0000-0x0000000004540000-memory.dmp

          memory/2732-210-0x0000000004860000-0x00000000048F2000-memory.dmp

          memory/2732-177-0x0000000004680000-0x0000000004860000-memory.dmp

          memory/2732-212-0x0000000004540000-0x0000000004581000-memory.dmp

          memory/2732-173-0x0000000004340000-0x000000000449A000-memory.dmp

          memory/2732-167-0x00000000040D0000-0x0000000004100000-memory.dmp

          memory/2744-84-0x0000000004F10000-0x0000000004F78000-memory.dmp

          memory/4860-228-0x0000000000900000-0x0000000000A96000-memory.dmp

          memory/4860-229-0x000000001B710000-0x000000001B7AE000-memory.dmp

          memory/4860-232-0x000000001BC10000-0x000000001BD6A000-memory.dmp

          memory/4860-233-0x000000001BF50000-0x000000001C130000-memory.dmp

          memory/4860-234-0x000000001CDB0000-0x000000001CF36000-memory.dmp

          memory/4860-235-0x0000000002BB0000-0x0000000002BE0000-memory.dmp

          memory/5936-236-0x0000000002A40000-0x0000000002A81000-memory.dmp