Analysis

  • max time kernel
    149s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    20/10/2026, 12:33

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 19.8MB
  • Sample261020-prdfladv7n
  • SHA256 e94b46c823c7892acffcb2948978eda2fbd96d71285fd395641ee348b2d4db06
  • 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 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).

  • 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:4828
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.6.9747\21f5fbe4cb3360c7\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:1620
  • 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:2612
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding C3E263107E41F9E6312FE5BBD13C8710 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4676
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIAE3C.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240693031 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:452
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIB33F.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240694125 11 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:4236
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIBA35.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240695859 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2420
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:700
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding E6709CB4C413E5C9B86C8E6AA86F66E0
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4772
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 3BCE811C9BCC13D1EE47A19F43BC80F1 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4436
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1956
    • C:\Program Files (x86)\ScreenConnect Client (21f5fbe4cb3360c7)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (21f5fbe4cb3360c7)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-grjy4i-relay.screenconnect.com&p=443&s=01139543-14af-4383-8680-a29f20606ef7&k=BgIAAACkAABSU0ExAAgAAAEAAQAhshpXhau4YSvQCnRBGo9KFU4BFzTSIQO3GqgB0fLbqhnarKGNEO0iCcmKwQuzjU9%2b3NmLqx8lKfN43gFBjV0c4POII2jQAlCkE7pchGue0iDk%2fay%2bnjipLiJTtDDX74%2f7rWMP%2fydLMfLj3Z561QRmiXwrJoa7SyHs7j4OPw1GIkgVve%2b1nPviRn0atq%2b5IGaWvecPFZhfK3SMvQLPynSL3RpqdY67701SCfOPEbEpTRkrjkQrP1gn4%2fwRi09gLA7W4j3jpmWbtAdNES6Q4KqHsWPugjTpPbMGthojIQA4Zd0Gv9eAjWk%2btIXPl%2bwNeTml2DNv6QwTCKPq4ANisG%2fh&c=new&c=&c=&c=&c=&c=&c=&c="
      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:1404
      • C:\Program Files (x86)\ScreenConnect Client (21f5fbe4cb3360c7)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (21f5fbe4cb3360c7)\ScreenConnect.WindowsClient.exe" "RunRole" "f277f3a0-cad1-461c-aaee-18786cbdd433" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2272
      • C:\Program Files (x86)\ScreenConnect Client (21f5fbe4cb3360c7)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (21f5fbe4cb3360c7)\ScreenConnect.WindowsClient.exe" "RunRole" "2ec3e932-f6f3-44a8-86c4-fb19aff4d15c" "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:3004

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e58f6fe.rbs

          • Path C:\Config.Msi\e58f6fe.rbs
          • Size 214KB
          • SHA256 d2a98028f8488b3a762848f92791be84738521cd88f785600fc0ca917545e9d2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (21f5fbe4cb3360c7)\ScreenConnect.Client.dll
          • Size 615KB
          • SHA256 787a02b1938e8c1ce52448b8779d2c9c47029664f97185177c2584e8f980abc4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (21f5fbe4cb3360c7)\ScreenConnect.ClientService.dll
          • Size 176KB
          • SHA256 579fa008b8c96612163fd8a89a978140a652b3739867772df0711fca148705aa
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (21f5fbe4cb3360c7)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 d887f20ec383d7ce3a5727856bf7fa68ceb972108b6d0a5dd9924707e820dc24
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (21f5fbe4cb3360c7)\ScreenConnect.Core.dll
          • Size 1.3MB
          • SHA256 5b2d14e237485c0164d865d8a94f8a8bed28ab0db52c6a7ef99f7ebb9648d324
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (21f5fbe4cb3360c7)\ScreenConnect.Windows.dll
          • Size 1.9MB
          • SHA256 88dd22f6f0ca70d10c64ca919b0d8b6d73e84c1d567d4b8d15b6e9a9b60d6d8f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (21f5fbe4cb3360c7)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (21f5fbe4cb3360c7)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 239377f4d2345d2a4ff6e3cbebd83c6edb06db4daea389159d19770a2dfcb80c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (21f5fbe4cb3360c7)\system.config
          • Size 966B
          • SHA256 07623dae5f544ddd67f45ec99356c637b71f426a8e1ec28ca6d18d8328e6ded9
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 9732f03480ba7aa7c68b2bf5a6b4e5ac8ab3ca6a019a7a4d51d063de8374a973
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 c001929f7d02d9beb3cb16c050fa7bac850d446af7ecd827eb00d3f9438c2603
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 30713e9975f1fbc80517631ea113d6b7514764464f5dcb0d94a9884d63b433d7
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 4f07215354ded8101955d2966d163d02a5766516e2e4784b405bf4fbea1e2a76
          • 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

          MSIAE3C.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIAE3C.tmp
          • Size 1.9MB
          • SHA256 1dabfa60015c186a4315f16d46d9e53435dc259c52843e73dac0d04be92f9a84
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIAE3C.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIAE3C.tmp-\ScreenConnect.Core.dll
          • Size 1.3MB
          • SHA256 e5fd82d18c2dcaadbfc4b72b56573e819cc3e8ee6406f2edb982cc073dc607bb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIAE3C.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 cf8505204b1458dac9cb3002fd5bbd5fac43c5b4702aa0153fb4b9a2cfcf954a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIAE3C.tmp-\ScreenConnect.Windows.dll
          • Size 1.8MB
          • SHA256 ed1b4eb6c24c85392f692bf5863d9ccb76575051bb605360961b9d7624a371c6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSIB33F.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIB33F.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\21f5fbe4cb3360c7\ScreenConnect.ClientSetup.msi
          • Size 16.2MB
          • SHA256 ae257822e0271ed2daea3fd89feeb803160ae4deefda15839d62f79a2b71967f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIFCFA.tmp

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

          cyzvn3fj.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (21f5fbe4cb3360c7)\cyzvn3fj.newcfg
          • Size 885B
          • SHA256 af43fb5dc2938f08d766c539d2e7dc6fa179b63a856df4b91a30d3cf5468ae93
          • MD5 SHA1 SHA512 TLSH

          nruy5p0r.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (21f5fbe4cb3360c7)\nruy5p0r.newcfg
          • Size 683B
          • SHA256 5323616cd2e3fc1f5d4933b463ec5ab8fd6a01f50c8649873e5f81572df92641
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (21f5fbe4cb3360c7)\user.config
          • Size 520B
          • SHA256 bd8543c801c422a7ec17d5aea6b07611cee9b9e1c09c929fd008b7ca027f6496
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.1MB
          • SHA256 94747d34ff383d2a344be95c796aac30592b67da81fc403d1c12f47790f4271e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {d1d01dce-3d52-44f0-adff-6192e2674265}_OnDiskSnapshotProp

          • Path \??\Volume{9f840213-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{d1d01dce-3d52-44f0-adff-6192e2674265}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 87f1f863312679271704b2f4a9b92851661f02ea3958187f139a8eb05bb3d3f7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/452-39-0x0000000004A20000-0x0000000004A4E000-memory.dmp

          memory/452-47-0x0000000004C50000-0x0000000004DAA000-memory.dmp

          memory/452-43-0x0000000004A50000-0x0000000004A5C000-memory.dmp

          memory/452-51-0x0000000004F90000-0x0000000005170000-memory.dmp

          memory/1404-215-0x0000000004CC0000-0x0000000004D96000-memory.dmp

          memory/1404-166-0x0000000004300000-0x0000000004330000-memory.dmp

          memory/1404-172-0x0000000004550000-0x00000000046AA000-memory.dmp

          memory/1404-176-0x0000000004890000-0x0000000004A70000-memory.dmp

          memory/1404-213-0x0000000004750000-0x0000000004791000-memory.dmp

          memory/1404-211-0x0000000004A70000-0x0000000004B02000-memory.dmp

          memory/1404-210-0x00000000047F0000-0x000000000488E000-memory.dmp

          memory/1404-188-0x0000000004700000-0x0000000004750000-memory.dmp

          memory/2272-217-0x0000000000670000-0x0000000000806000-memory.dmp

          memory/2272-230-0x000000001B360000-0x000000001B3FE000-memory.dmp

          memory/2272-236-0x000000001B400000-0x000000001B430000-memory.dmp

          memory/2272-233-0x000000001CAD0000-0x000000001CC56000-memory.dmp

          memory/2272-232-0x000000001BC70000-0x000000001BE50000-memory.dmp

          memory/2272-231-0x000000001B930000-0x000000001BA8A000-memory.dmp

          memory/3004-237-0x0000000002D20000-0x0000000002D61000-memory.dmp

          memory/4236-83-0x0000000004F30000-0x0000000004F98000-memory.dmp

          memory/4828-8-0x0000000006750000-0x0000000006CF4000-memory.dmp

          memory/4828-0-0x0000000005DA0000-0x0000000005DB0000-memory.dmp

          memory/4828-2-0x0000000005DA0000-0x0000000005DB0000-memory.dmp

          memory/4828-1-0x0000000005CB0000-0x0000000005CB8000-memory.dmp

          memory/4828-3-0x0000000005CD0000-0x0000000005CDC000-memory.dmp

          memory/4828-7-0x0000000005FB0000-0x0000000006190000-memory.dmp

          memory/4828-6-0x0000000005DA0000-0x0000000005DB0000-memory.dmp

          memory/4828-5-0x0000000005F30000-0x0000000005F98000-memory.dmp

          memory/4828-4-0x0000000005DB0000-0x0000000005F0A000-memory.dmp