Analysis

  • max time kernel
    149s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    25/04/2026, 12:39

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.7MB
  • Sample260425-pv2mlact9p
  • SHA256 9b0ea4ee951102afd94676402ce913bc9137f6c6455555800b4ae0523caaa928
  • 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.

  • 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.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 42 IoCs
  • 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.

  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 13 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 7 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 8 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.msi
    1⤵
    • Badlisted process makes network request
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:4732
  • 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:3476
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding DC5E7B8F8419670070C4A26B6E33D621 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2108
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIFFFB.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240648312 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4792
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI377.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240649093 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2628
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI869.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240650343 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1580
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2252
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding C9787A8F744D8A4A3DE02AA64E7E25A7
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2044
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 84B415104A2389B546192C8312D20F39 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:2096
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4080
    • C:\Program Files (x86)\ScreenConnect Client (0df172b588792c6e)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (0df172b588792c6e)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-erkk9y-relay.screenconnect.com&p=443&s=a9c5a544-6f59-4551-ae1d-6d50cc60b9e3&k=BgIAAACkAABSU0ExAAgAAAEAAQAlwVQ25y8c3j3k%2bECpZeGRtpeGqsYZdMyDSG3JVGnT9eLsjXnITx8NGrarQt69QTlYt8UJijjpDGipQb9uDosGMxZSPiP%2bKUxBuXJsS%2bRZ%2bhAo9R0dPXWzSGZscJRCRDIwNaCX%2fIegJbEBPoORmt4wa98uLkQFBNFMq3b56lp6Ul7EhMXJGkX9XfzQhGcYu1ouEjYYkZPRS4rpUI3N%2bH5awdH2AQpy58d2t9YH08Je1F5NlYKGKMszT2hazlRyvPMVzZiIGaBh5IUo5WpuTbBhA14oe%2fzw2ukAEMWXZBV6aRnYLetfS0A2%2bYJO6T8IDEX2bwou5ZhcWd126lXeWsar"
      1⤵
      • Sets service image path in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:5924
      • C:\Program Files (x86)\ScreenConnect Client (0df172b588792c6e)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (0df172b588792c6e)\ScreenConnect.WindowsClient.exe" "RunRole" "630cb8f9-8d63-4735-b211-f2a267de50d9" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4424

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e583bcd.rbs

          • Path C:\Config.Msi\e583bcd.rbs
          • Size 214KB
          • SHA256 fbac02d8be60ca0ada1ddc8d3d0ec1e31e4c9b1d8ce8d2c8bc69c8cd9e8ef222
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (0df172b588792c6e)\Client.en-US.resources
          • Size 64KB
          • SHA256 efdb0b4fcc38b52cbf72336bd107a814db8454003f3495de21e2026a148823ea
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (0df172b588792c6e)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (0df172b588792c6e)\ScreenConnect.Client.dll
          • Size 411KB
          • SHA256 28ff8468ad2db8b41fe9d9a2971dd56fea0aecad14808fe4b31c9b1072d3b129
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (0df172b588792c6e)\ScreenConnect.ClientService.dll
          • Size 90KB
          • SHA256 9cf2c77df0a1a1e854ec1bbc6940d96f508bfb4b0555a07657c77314803a717e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (0df172b588792c6e)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 01341bd42426c3d110136cc94433df00dbad690a56593f7cca41a93f698f214a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (0df172b588792c6e)\ScreenConnect.Core.dll
          • Size 572KB
          • SHA256 92e831159d5e9f2676241ab7ce80060a0b1dc34684f83797aec93b3ecff41139
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (0df172b588792c6e)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 2292aac48ad575c6d1ed99c862e3408e254db34b8fea50cf3594aa08f3e875d0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (0df172b588792c6e)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (0df172b588792c6e)\ScreenConnect.WindowsClient.exe
          • Size 665KB
          • SHA256 6e95d68102dc761942e67e2337ad8e49d32ee7c8943340489a01e2c56ea6e00b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (0df172b588792c6e)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 838KB
          • SHA256 3fa1fe4a588015cc94eceb06867f16a5e562293139fbf6b36bde21dba478968d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (0df172b588792c6e)\system.config
          • Size 960B
          • SHA256 a605d97d50901572938451fa2bc18df276965072980111e5a66401cd3745fd10
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 2088debe58dad3ff08124371eff530132ca52aec42431db0e030b6d224583625
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 ee09d28a61cf6899ae48a0d7d18c0bc476ad048deb6912ebeb17394488be1025
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 cda9089118cafc9146e3f2fcf7d4f447091a70e4119a9066ffe860274b3b4081
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 ab6cdc89039f0bd3d215d6fb0e6e5908dbcf4a348d11eba4f7a0fb8e1c7140a6
          • 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

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI377.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI377.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 528242c7745783b3b4ae72fec13bb9bd49b17b0e00f60c027351147f21fdd359
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIFFFB.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIFFFB.tmp
          • Size 1.1MB
          • SHA256 cd6bccce073b2a5205840ec31c91df0d443cc57c68756de2c03e21db8e3fc157
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

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

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIFFFB.tmp-\ScreenConnect.Core.dll
          • Size 562KB
          • SHA256 c51a2b5cb5054ec0136e332bf290c8af3392d7936b5137a07423df08ab33d264
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIFFFB.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 432abf3a198ff64fb2c660eb06b2bb33a16cf69fd28d836cfcb65c43d37dc462
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIFFFB.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 10933424536d53e397f651915f862c933199c50722943c236b020787b2e8f147
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI3D72.tmp

          • Path C:\Windows\Installer\MSI3D72.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e583bcc.msi

          • Path C:\Windows\Installer\e583bcc.msi
          • Size 9.7MB
          • SHA256 9b0ea4ee951102afd94676402ce913bc9137f6c6455555800b4ae0523caaa928
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1580-117-0x00000000008D0000-0x000000000098F000-memory.dmp

          memory/2044-198-0x0000000000BA0000-0x0000000000C5F000-memory.dmp

          memory/2096-199-0x0000000000400000-0x00000000004BF000-memory.dmp

          memory/2108-200-0x0000000001170000-0x000000000122F000-memory.dmp

          memory/2108-121-0x0000000001170000-0x000000000122F000-memory.dmp

          memory/2252-217-0x0000026D8E700000-0x0000026D8E82A000-memory.dmp

          memory/2252-221-0x0000026D8E700000-0x0000026D8E82A000-memory.dmp

          memory/2628-75-0x0000000005280000-0x00000000052A8000-memory.dmp

          memory/2628-84-0x0000000000ED0000-0x0000000000F8F000-memory.dmp

          memory/3476-214-0x0000016F645A0000-0x0000016F646CA000-memory.dmp

          memory/3476-215-0x0000016F65440000-0x0000016F6544C000-memory.dmp

          memory/3476-120-0x0000016F645A0000-0x0000016F646CA000-memory.dmp

          memory/4080-125-0x000002F03ECB0000-0x000002F03EDDA000-memory.dmp

          memory/4080-216-0x000002F03ECB0000-0x000002F03EDDA000-memory.dmp

          memory/4424-212-0x0000000002D60000-0x0000000002D7A000-memory.dmp

          memory/4424-220-0x0000000002D00000-0x0000000002D0C000-memory.dmp

          memory/4424-208-0x000000001B8F0000-0x000000001B95A000-memory.dmp

          memory/4424-219-0x000000001B7C0000-0x000000001B8EA000-memory.dmp

          memory/4424-207-0x0000000000C30000-0x0000000000CDA000-memory.dmp

          memory/4424-210-0x000000001BFA0000-0x000000001C150000-memory.dmp

          memory/4424-211-0x000000001C2E0000-0x000000001C466000-memory.dmp

          memory/4424-213-0x0000000002EC0000-0x0000000002EDA000-memory.dmp

          memory/4424-209-0x000000001BD50000-0x000000001BDE4000-memory.dmp

          memory/4732-206-0x000001F25C670000-0x000001F25C67C000-memory.dmp

          memory/4732-118-0x000001F25BF80000-0x000001F25C0AA000-memory.dmp

          memory/4732-205-0x000001F25BF80000-0x000001F25C0AA000-memory.dmp

          memory/4732-119-0x000001F25C670000-0x000001F25C67C000-memory.dmp

          memory/4792-29-0x0000000005390000-0x00000000053BE000-memory.dmp

          memory/4792-33-0x00000000053D0000-0x00000000053DC000-memory.dmp

          memory/4792-37-0x00000000054F0000-0x0000000005584000-memory.dmp

          memory/4792-41-0x0000000005740000-0x00000000058F0000-memory.dmp

          memory/4792-42-0x0000000005EA0000-0x0000000006444000-memory.dmp

          memory/4792-48-0x0000000000EA0000-0x0000000000F5F000-memory.dmp

          memory/5924-179-0x0000000004470000-0x00000000044DA000-memory.dmp

          memory/5924-163-0x0000000003FD0000-0x0000000003FEA000-memory.dmp

          memory/5924-169-0x00000000042B0000-0x0000000004344000-memory.dmp

          memory/5924-173-0x0000000004500000-0x00000000046B0000-memory.dmp

          memory/5924-175-0x00000000043B0000-0x0000000004400000-memory.dmp

          memory/5924-218-0x0000000004180000-0x0000000004207000-memory.dmp

          memory/5924-184-0x0000000004930000-0x0000000004A05000-memory.dmp

          memory/5924-180-0x0000000004750000-0x00000000047E2000-memory.dmp

          memory/5924-182-0x0000000004400000-0x0000000004441000-memory.dmp