Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    24/08/2026, 18:20

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 12.2MB
  • Sample260824-wyvrsabl21
  • SHA256 d5a73042f74b42cf6ccca6679ae3d029beb458c2647a44878d51d2bd840d60de
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 7 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 13 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 14 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 8 IoCs
  • Suspicious use of SendNotifyMessage 6 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:2404
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.4.3.9662\9973fa6c8dc8f335\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:2660
  • 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:3752
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 16460F3F4D388AB65A3DAFA4E2F0EE97 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1464
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI8D47.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240684515 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4596
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI8FA9.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240684984 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4760
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI8824.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240748625 19 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1592
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4816
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 6579654ABB7EC94E323452326FC2A2DA
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1256
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 4D5466023825056CC55F98190397F237 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1780
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:436
    • C:\Program Files (x86)\ScreenConnect Client (9973fa6c8dc8f335)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (9973fa6c8dc8f335)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-xuqusr-relay.screenconnect.com&p=443&s=c492ea85-69bb-4ce8-a78b-618461145dc4&k=BgIAAACkAABSU0ExAAgAAAEAAQD5BWGvLxvddkeJ6V0fXN0VOZHvsfdDlsaFA2p7foMrCiI4rrtiXV%2b3CtOspp1hH5lKrhatN3jb0dreFJJhRnudZ7L8zAJkot4fZ395%2bMGF4ZIJmjx8yBbxK%2bZPRBEIKD7JhGCoh8SgDcCfrrrUEi3lTrlE3mrZTrec1IHJyjFqHgCuLBeiIy7wfwdMmedNn92YE7S0C80mSPiNv%2b9czthM4SOuTAzBzmbAQTpn5Plke7ajtMHyj4GWr74YhN%2b6o5%2fU%2fdEaeS%2bgcicIyrY4rdidQFdQUXlbDt%2bJ2C6C5aAAmTfdRX%2b6M4R%2f%2fz10gTqYVCnBXTSLNOmGQxYYLhc2FxO2&t=plgghghg"
      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:1728
      • C:\Program Files (x86)\ScreenConnect Client (9973fa6c8dc8f335)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (9973fa6c8dc8f335)\ScreenConnect.WindowsClient.exe" "RunRole" "8ba53e04-0581-4bb5-9dae-8777ddff9ae9" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4536
      • C:\Program Files (x86)\ScreenConnect Client (9973fa6c8dc8f335)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (9973fa6c8dc8f335)\ScreenConnect.WindowsClient.exe" "RunRole" "0a047ed9-b847-4bab-8067-74640e6444f1" "System"
        2⤵
        • Drops file in System32 directory
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:1224

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e59d393.rbs

          • Path C:\Config.Msi\e59d393.rbs
          • Size 214KB
          • SHA256 89411fcac944dafb7b59db0ebd40908c1435bdd27614b544e58dd02724690994
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (9973fa6c8dc8f335)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9973fa6c8dc8f335)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 4010ea184982e71ad71e76b43266488c954f665324b89ef042cea9e463a60c9d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9973fa6c8dc8f335)\ScreenConnect.ClientService.dll
          • Size 91KB
          • SHA256 6e6aa42b107d3e82b7b7dc18a75eee3f09e9f268788c0a7edbbc617152adf178
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (9973fa6c8dc8f335)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 a94ecccb5b88e3860d619fbb3b87ff4af6448240ab65b89d610f348d75e793f2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9973fa6c8dc8f335)\ScreenConnect.Core.dll
          • Size 577KB
          • SHA256 eedbd9ba4755f238af397c71b575082e18a31eabacc22abb4949f92fe991e169
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9973fa6c8dc8f335)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 305663a05c77c8058569a976db740aa2f20b66583f0381059633b628376570fc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9973fa6c8dc8f335)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9973fa6c8dc8f335)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 ce75ee1188726b49d46477166faac6f8715ca1aa4afc5b8a687fcbfcd541c0c2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (9973fa6c8dc8f335)\system.config
          • Size 968B
          • SHA256 66d1a43dae8cfb4c8825293ab7d094d7fef247c62a6bd24e6318fe03d92ca2ec
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 0ede7dab5f2079d74a1f3988f235dcfdc62a96df989ecc09dd4fb5f8e2eb2b90
          • MD5 SHA1 SHA512 TLSH

          BA74182F76F15A9CF514DEF352303C95

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\BA74182F76F15A9CF514DEF352303C95
          • Size 737B
          • SHA256 fb76c37ab5c997bfae0e354411f260682e9f2a9c533a1969dbcc999b3ad34142
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 64968e84f075140dbd9f81ef402883ed9b1764306c13a2176527af68eecfb93b
          • MD5 SHA1 SHA512 TLSH

          BA74182F76F15A9CF514DEF352303C95

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\BA74182F76F15A9CF514DEF352303C95
          • Size 248B
          • SHA256 9a4cb238740c0d94f2b9056443e3c1af21b3dd9855da54830b11eb4a59b6d3fb
          • 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

          MSI8D47.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8D47.tmp
          • Size 1.1MB
          • SHA256 18bacfd2a7c95800b6279cb8731bf03c8bbb526f5bc3790254a8e06d7ceee8ad
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8D47.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8D47.tmp-\ScreenConnect.Core.dll
          • Size 567KB
          • SHA256 15fec18d3a8990cdb540897ede61227353165668048c001164fcd22233cc8390
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8D47.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 c1142cc3ae09a7d3b5392539c29cbeb585543a38c93e37e55d82cbe0bb56d588
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8D47.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ae3005e1ca932eccde09c479fde2ecf8ea2feeb908dec4f0c830eab671276454
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8FA9.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI8FA9.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 7c27380976a5befc5a947e129eb464123f46d06cf0eb7f984ced921f36e1d0e7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.4.3.9662\9973fa6c8dc8f335\ScreenConnect.ClientSetup.msi
          • Size 9.8MB
          • SHA256 19b525e387d8cf27244b70ba2c48d7fef74c4e549b15b090ad67f3fc93ff567e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSID5B6.tmp

          • Path C:\Windows\Installer\MSID5B6.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          bhfafxp2.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (9973fa6c8dc8f335)\bhfafxp2.newcfg
          • Size 883B
          • SHA256 924b9e70f7260231c28a27b75eb1c675dd70219aefe7f61639ae1ff98ee49122
          • MD5 SHA1 SHA512 TLSH

          gypudgzi.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (9973fa6c8dc8f335)\gypudgzi.newcfg
          • Size 883B
          • SHA256 0a85b33a3bc61966fe67e486692e06619248f7e159719fa78d5151f188ad302e
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (9973fa6c8dc8f335)\user.config
          • Size 683B
          • SHA256 20fc77d8b68d010277098de5b8545cca9bde2fb74fa98e78d41f8e9a06392fb9
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (9973fa6c8dc8f335)\user.config
          • Size 520B
          • SHA256 9047c0cf5d11f93bd90dd75f1f186241911e622b181eaa9d6b9366999573fb42
          • MD5 SHA1 SHA512 TLSH

          memory/1728-199-0x0000000003F30000-0x0000000003FC2000-memory.dmp

          memory/1728-179-0x0000000003B90000-0x0000000003BE0000-memory.dmp

          memory/1728-203-0x0000000004110000-0x00000000041E6000-memory.dmp

          memory/1728-177-0x0000000003CE0000-0x0000000003E90000-memory.dmp

          memory/1728-201-0x0000000003BE0000-0x0000000003C21000-memory.dmp

          memory/1728-196-0x0000000003C50000-0x0000000003CBC000-memory.dmp

          memory/1728-173-0x0000000003A70000-0x0000000003B04000-memory.dmp

          memory/1728-167-0x0000000001540000-0x000000000155A000-memory.dmp

          memory/2404-0-0x00000000060F0000-0x0000000006100000-memory.dmp

          memory/2404-6-0x0000000006130000-0x00000000062E0000-memory.dmp

          memory/2404-8-0x00000000060F0000-0x0000000006100000-memory.dmp

          memory/2404-7-0x0000000006890000-0x0000000006E34000-memory.dmp

          memory/2404-1-0x0000000002110000-0x0000000002118000-memory.dmp

          memory/2404-2-0x00000000060F0000-0x0000000006100000-memory.dmp

          memory/2404-3-0x0000000002220000-0x000000000222C000-memory.dmp

          memory/2404-4-0x0000000006040000-0x00000000060D4000-memory.dmp

          memory/2404-5-0x0000000006100000-0x0000000006128000-memory.dmp

          memory/4536-231-0x000000001BE80000-0x000000001C030000-memory.dmp

          memory/4536-230-0x000000001BC30000-0x000000001BCC4000-memory.dmp

          memory/4536-232-0x0000000001500000-0x000000000151A000-memory.dmp

          memory/4536-233-0x000000001CE40000-0x000000001CFC6000-memory.dmp

          memory/4536-228-0x000000001B8C0000-0x000000001B92C000-memory.dmp

          memory/4536-227-0x0000000000C90000-0x0000000000D3E000-memory.dmp

          memory/4596-53-0x00000000055C0000-0x0000000005770000-memory.dmp

          memory/4596-41-0x0000000005290000-0x00000000052BE000-memory.dmp

          memory/4596-49-0x0000000005370000-0x0000000005404000-memory.dmp

          memory/4596-45-0x00000000052C0000-0x00000000052CC000-memory.dmp

          memory/4760-85-0x00000000047B0000-0x00000000047D8000-memory.dmp