Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    22/07/2026, 12:20

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 12.2MB
  • Sample260722-phr8ds1vc1
  • SHA256 82af9be86ee0202bc0fd4da255707800b0143229a3a16a558d858321480e655c
  • 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 12 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 2 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.

  • Modifies data under HKEY_USERS 9 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 6 IoCs
  • Suspicious use of SendNotifyMessage 4 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:\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:4324
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.4.3.9662\261c1504b1691afc\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:1668
  • 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:5088
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 566043C771AD5A20FD8EE6E06BA7C370 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2052
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI9584.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240686640 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4472
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI9A58.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240687703 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2900
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIA015.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240689203 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4132
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3020
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 57D7BABB21E8F00B6A8C6009F8FCFA42
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4564
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding B4AE9EEE28DFD3A2A8789C952B38C75E E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2808
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3580
    • C:\Program Files (x86)\ScreenConnect Client (261c1504b1691afc)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (261c1504b1691afc)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-ytslk1-relay.screenconnect.com&p=443&s=32967e35-c437-48c1-b959-f05f6aeff37e&k=BgIAAACkAABSU0ExAAgAAAEAAQCNPR3%2brM9voroR4bhD%2bwi6VTcdCH4oxrwa12MNgFlSABdCxRX90HbEfVgRN2RVomxTrBVuM4u3LMhU7uyfljNnTFHx26YDXhMDmLuNJQbxgMDBPci86xCE7nns7GNrk4ZA9jkAtaQG5AXq22Tuw%2f4EVpn7HzIctEFNbJtRtuvBJJ9nGluZIwt%2beWsEym%2bT0uAWQTWUSsNcMyFZfW%2f2vqlipWrxYB1hmA3cB%2fjrtlWt6ozpSsf25J0DKmK1xGS7s7kDdX6G9Q4mx7GjHYxCntjuMZI5D2iM2fe2QNnClq7tUtEQLH5mCmIWxEo8aZEVvBMrWJdYWSvpklmRBb7sxXHU"
      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:1848
      • C:\Program Files (x86)\ScreenConnect Client (261c1504b1691afc)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (261c1504b1691afc)\ScreenConnect.WindowsClient.exe" "RunRole" "1e6f978c-9b1c-4f09-905a-fd78c9e5c965" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4796

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e58e03a.rbs

          • Path C:\Config.Msi\e58e03a.rbs
          • Size 214KB
          • SHA256 54e3f3e8ac18ce2e20301b889eff952f07065665bf422b5667e4afc1fab8eb9e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (261c1504b1691afc)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 4010ea184982e71ad71e76b43266488c954f665324b89ef042cea9e463a60c9d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (261c1504b1691afc)\ScreenConnect.ClientService.dll
          • Size 91KB
          • SHA256 6e6aa42b107d3e82b7b7dc18a75eee3f09e9f268788c0a7edbbc617152adf178
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (261c1504b1691afc)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 a94ecccb5b88e3860d619fbb3b87ff4af6448240ab65b89d610f348d75e793f2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (261c1504b1691afc)\ScreenConnect.Core.dll
          • Size 577KB
          • SHA256 eedbd9ba4755f238af397c71b575082e18a31eabacc22abb4949f92fe991e169
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (261c1504b1691afc)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 305663a05c77c8058569a976db740aa2f20b66583f0381059633b628376570fc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (261c1504b1691afc)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (261c1504b1691afc)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 ce75ee1188726b49d46477166faac6f8715ca1aa4afc5b8a687fcbfcd541c0c2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (261c1504b1691afc)\system.config
          • Size 958B
          • SHA256 20c33ed7d6a6b4332af42181398ddd9d78d5a1baba01953695dcb6882755504b
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 187b6e2163bda774ecdc0297009ad3b3a7f41e04f4c844d47cc0a691c61da13e
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 42c88d91147f3ac6cc927c89aecfdbac144457e65fcf5c18747f62d0f3f05d0d
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 e1665500b66a2686ed7fd1db2cba9afabaeef674e860a9beaa6b3410080ca50d
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 5cce0d40ac410cdb4329db7977e7808cfd6e0e49f9a05a9d53aa804257eceba5
          • 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

          MSI9584.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI9584.tmp
          • Size 1.1MB
          • SHA256 18bacfd2a7c95800b6279cb8731bf03c8bbb526f5bc3790254a8e06d7ceee8ad
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI9584.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI9584.tmp-\ScreenConnect.Core.dll
          • Size 567KB
          • SHA256 15fec18d3a8990cdb540897ede61227353165668048c001164fcd22233cc8390
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI9584.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 c1142cc3ae09a7d3b5392539c29cbeb585543a38c93e37e55d82cbe0bb56d588
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI9584.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ae3005e1ca932eccde09c479fde2ecf8ea2feeb908dec4f0c830eab671276454
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI9A58.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI9A58.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\261c1504b1691afc\ScreenConnect.ClientSetup.msi
          • Size 9.8MB
          • SHA256 96322f1826f69c522db2af37de8a5899aac34abdaa481732a18a1749167fafe5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIE1FF.tmp

          • Path C:\Windows\Installer\MSIE1FF.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (261c1504b1691afc)\user.config
          • Size 520B
          • SHA256 07d6c2861b117d83db78993a830a5ef2d720c33ffd2e36f3bece490dc43c2d06
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (261c1504b1691afc)\user.config
          • Size 882B
          • SHA256 78ea982ecc06d1c970dbc545b0943549e80ccaec01cc6550d5cbc101a82283f5
          • MD5 SHA1 SHA512 TLSH

          w0400nfc.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (261c1504b1691afc)\w0400nfc.newcfg
          • Size 882B
          • SHA256 17a62eda9a371f8c271f2c8631af60678fd09c1a8fa67f2e2a61dd263e53a2e5
          • MD5 SHA1 SHA512 TLSH

          z0umncuv.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (261c1504b1691afc)\z0umncuv.newcfg
          • Size 683B
          • SHA256 a04369e9de1083b1a81b3c7d42f06b8acbbfca89eb2b274bb564a2965d9e71f3
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.1MB
          • SHA256 261d691cc4149625b99d897c7c3242f98c1038873a484ad1b196b3a10b70ec03
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {26fe9563-404b-4ef8-a9fe-114db83d2cdc}_OnDiskSnapshotProp

          • Path \??\Volume{20c84cf9-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{26fe9563-404b-4ef8-a9fe-114db83d2cdc}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 f15ac4d7b2c8885cbfbdfe1b823a5a19e4aa8fc2bbab1b8767937dff23ea18ee
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1848-174-0x0000000004100000-0x0000000004194000-memory.dmp

          memory/1848-182-0x0000000004250000-0x00000000042A0000-memory.dmp

          memory/1848-168-0x0000000004040000-0x000000000405A000-memory.dmp

          memory/1848-211-0x00000000045D0000-0x0000000004662000-memory.dmp

          memory/1848-215-0x00000000047B0000-0x0000000004886000-memory.dmp

          memory/1848-178-0x0000000004380000-0x0000000004530000-memory.dmp

          memory/1848-213-0x00000000042A0000-0x00000000042E1000-memory.dmp

          memory/1848-210-0x0000000004310000-0x000000000437C000-memory.dmp

          memory/2900-85-0x0000000004B50000-0x0000000004B78000-memory.dmp

          memory/4324-3-0x0000000002FC0000-0x0000000002FCC000-memory.dmp

          memory/4324-1-0x0000000002FA0000-0x0000000002FA8000-memory.dmp

          memory/4324-8-0x0000000005750000-0x0000000005760000-memory.dmp

          memory/4324-4-0x00000000055E0000-0x0000000005674000-memory.dmp

          memory/4324-7-0x0000000005EC0000-0x0000000006464000-memory.dmp

          memory/4324-5-0x0000000005680000-0x00000000056A8000-memory.dmp

          memory/4324-0-0x0000000005750000-0x0000000005760000-memory.dmp

          memory/4324-6-0x0000000005760000-0x0000000005910000-memory.dmp

          memory/4324-2-0x0000000005750000-0x0000000005760000-memory.dmp

          memory/4472-53-0x00000000056E0000-0x0000000005890000-memory.dmp

          memory/4472-41-0x0000000003040000-0x000000000306E000-memory.dmp

          memory/4472-49-0x0000000005490000-0x0000000005524000-memory.dmp

          memory/4472-45-0x0000000003070000-0x000000000307C000-memory.dmp

          memory/4796-230-0x0000000002D70000-0x0000000002DDC000-memory.dmp

          memory/4796-231-0x000000001BCE0000-0x000000001BD74000-memory.dmp

          memory/4796-232-0x000000001BF30000-0x000000001C0E0000-memory.dmp

          memory/4796-229-0x0000000000CD0000-0x0000000000D7E000-memory.dmp

          memory/4796-233-0x0000000002CF0000-0x0000000002D0A000-memory.dmp

          memory/4796-234-0x000000001D320000-0x000000001D4A6000-memory.dmp