Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    10/07/2026, 00:13

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.7MB
  • Sample260710-ahq8rsbs8p
  • SHA256 3b6d903ef38b90f919cd2a0f233550ba9f90813461e4e3e966c8c9305b53f606
  • 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 27 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 9 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 29 IoCs
  • Suspicious use of SendNotifyMessage 27 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:2568
  • 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:4572
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 3C07D108C751DA842AAB441C7271D25F 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\MSIF354.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240710812 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:880
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIF76C.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240711531 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:212
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIC3.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240713968 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1584
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:888
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 49DF2ACC7896AA9A2EAA4D14B40003F4
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:696
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 807EACA2A6C0942D4A51BA224F077688 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:3528
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2428
    • C:\Program Files (x86)\ScreenConnect Client (bf428b2b009fee58)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (bf428b2b009fee58)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-y2gsej-relay.screenconnect.com&p=443&s=6030b62b-1693-4443-99cf-f7f134f61acc&k=BgIAAACkAABSU0ExAAgAAAEAAQApdEqCPz%2bxx1%2bqCXtxv80Pnv%2fBZImfo1JDjqyrvuPVwWdRAewWSQCx6UFxrobJ0Q%2fqX2xxEnKAM2pivb0AOZNZfSzNNGCGaAuSQJhIVbkRUWACxFVCRfo20%2bM6OlcN4valDHdrU2cNe6VI25UNlf9ICEXfyQmQh4liHyUo%2bJ7aSjmdS37SJhj%2b3sSDFQehNNfl6fWmai4C7ZyuyMje3OKzC5AoV1hVg2Y98Wsy6%2byc0mC%2bk5Viy8JBLlUl1jSfMtTrlousfB81dJr9Hr6SEVtxgKYsSZBqAccWUhK9laIgy8xxDjLl56Luxr53%2b6GLsoDiUOaLyWkm4w2qXhR3Z8Pk"
      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:1236
      • C:\Program Files (x86)\ScreenConnect Client (bf428b2b009fee58)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (bf428b2b009fee58)\ScreenConnect.WindowsClient.exe" "RunRole" "6315556c-08fb-4ea9-91b2-8ad8ea5b637f" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1880

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5944c1.rbs

          • Path C:\Config.Msi\e5944c1.rbs
          • Size 214KB
          • SHA256 3c839219426c4fc67f9c1d80d81595b9a6efd2ec2c02e5b01d1bd43d15a20915
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (bf428b2b009fee58)\Client.en-US.resources
          • Size 64KB
          • SHA256 efdb0b4fcc38b52cbf72336bd107a814db8454003f3495de21e2026a148823ea
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (bf428b2b009fee58)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (bf428b2b009fee58)\ScreenConnect.Client.dll
          • Size 411KB
          • SHA256 28ff8468ad2db8b41fe9d9a2971dd56fea0aecad14808fe4b31c9b1072d3b129
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (bf428b2b009fee58)\ScreenConnect.ClientService.dll
          • Size 90KB
          • SHA256 9cf2c77df0a1a1e854ec1bbc6940d96f508bfb4b0555a07657c77314803a717e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (bf428b2b009fee58)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 01341bd42426c3d110136cc94433df00dbad690a56593f7cca41a93f698f214a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (bf428b2b009fee58)\ScreenConnect.Core.dll
          • Size 572KB
          • SHA256 92e831159d5e9f2676241ab7ce80060a0b1dc34684f83797aec93b3ecff41139
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (bf428b2b009fee58)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 2292aac48ad575c6d1ed99c862e3408e254db34b8fea50cf3594aa08f3e875d0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (bf428b2b009fee58)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (bf428b2b009fee58)\ScreenConnect.WindowsClient.exe
          • Size 665KB
          • SHA256 6e95d68102dc761942e67e2337ad8e49d32ee7c8943340489a01e2c56ea6e00b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (bf428b2b009fee58)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 838KB
          • SHA256 3fa1fe4a588015cc94eceb06867f16a5e562293139fbf6b36bde21dba478968d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (bf428b2b009fee58)\system.config
          • Size 964B
          • SHA256 cb6e0cc19878a857ac5bf170667cc9d8f09687026ababe5f755f80e1e4f1fa51
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 cdfb2e759ea83a3f2ea91ab7e49019aec57ce5c7a4c78ac1fffd075b763cbd96
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 2a309b134ee2630cd8ac742660570286e0d0349d0181a317abf45a9de8058daf
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 bb13a78cb5622e33466ff79a5173ac6c9d9d4dee189815c6d61e36d7a3d0a8d3
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 d17534c585739f0bfda43ba556d73451041aa466636707c7cb17639c8caab3c3
          • 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

          MSIF354.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF354.tmp
          • Size 1.1MB
          • SHA256 cd6bccce073b2a5205840ec31c91df0d443cc57c68756de2c03e21db8e3fc157
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF354.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF354.tmp-\ScreenConnect.Core.dll
          • Size 562KB
          • SHA256 c51a2b5cb5054ec0136e332bf290c8af3392d7936b5137a07423df08ab33d264
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF354.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 432abf3a198ff64fb2c660eb06b2bb33a16cf69fd28d836cfcb65c43d37dc462
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF354.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 10933424536d53e397f651915f862c933199c50722943c236b020787b2e8f147
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF76C.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIF76C.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 528242c7745783b3b4ae72fec13bb9bd49b17b0e00f60c027351147f21fdd359
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI482C.tmp

          • Path C:\Windows\Installer\MSI482C.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e5944c0.msi

          • Path C:\Windows\Installer\e5944c0.msi
          • Size 9.7MB
          • SHA256 3b6d903ef38b90f919cd2a0f233550ba9f90813461e4e3e966c8c9305b53f606
          • MD5 SHA1 SHA512 SSDEEP TLSH

          5jfgeqs5.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (bf428b2b009fee58)\5jfgeqs5.newcfg
          • Size 589B
          • SHA256 f44228639c854ed7070aa477b04cf3cdd98efd5ee14f37a25fd4557b2c4dfbaf
          • MD5 SHA1 SHA512 TLSH

          bdtn5yfa.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (bf428b2b009fee58)\bdtn5yfa.newcfg
          • Size 589B
          • SHA256 2b5e08636eb9163ed7488c3cefa5a33b022e609380e2e2b0c31f53a91a085d57
          • MD5 SHA1 SHA512 TLSH

          f533u11a.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (bf428b2b009fee58)\f533u11a.newcfg
          • Size 589B
          • SHA256 7e6f340785bcf7a814dfc686f6f75507a641a9f76d1d9a3cee7ff7ca96af1de3
          • MD5 SHA1 SHA512 TLSH

          llkedszf.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (bf428b2b009fee58)\llkedszf.newcfg
          • Size 589B
          • SHA256 00f7483279051220bb0f331451098c129902c19f39be7cb7159da7eb5327db52
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (bf428b2b009fee58)\user.config
          • Size 589B
          • SHA256 35ffe6dc7e07c03da405e4173b74ffdaab31a170de136de5939e16c6f9108904
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (bf428b2b009fee58)\user.config
          • Size 589B
          • SHA256 d16c8adafcf45a1232bf4fab09b5d8e62bcdcebfaec169db6314abfe2aae160e
          • MD5 SHA1 SHA512 TLSH

          v3nnld2n.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (bf428b2b009fee58)\v3nnld2n.newcfg
          • Size 589B
          • SHA256 6d0fe1ecf8c78e4433020ca8371a77aa6d907d0091ae5de40ee0b193115ef071
          • MD5 SHA1 SHA512 TLSH

          wuvswwsg.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (bf428b2b009fee58)\wuvswwsg.newcfg
          • Size 589B
          • SHA256 0cf3ec41e605d95bcc65d23fad4be4b42763e3b5c128dfa78634d44d1de052e1
          • MD5 SHA1 SHA512 TLSH

          yvt4lqr4.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (bf428b2b009fee58)\yvt4lqr4.newcfg
          • Size 589B
          • SHA256 682da8997ef355db12efe14dbe3e5f40242c39be805c297863894d9ceed409f6
          • MD5 SHA1 SHA512 TLSH

          memory/212-74-0x0000000004EA0000-0x0000000004EC8000-memory.dmp

          memory/880-42-0x0000000005630000-0x0000000005BD4000-memory.dmp

          memory/880-37-0x0000000004C80000-0x0000000004D14000-memory.dmp

          memory/880-33-0x0000000002830000-0x000000000283C000-memory.dmp

          memory/880-29-0x00000000027F0000-0x000000000281E000-memory.dmp

          memory/880-41-0x0000000004ED0000-0x0000000005080000-memory.dmp

          memory/1236-185-0x0000000003A40000-0x0000000003A81000-memory.dmp

          memory/1236-183-0x0000000003F40000-0x0000000003FD2000-memory.dmp

          memory/1236-161-0x00000000039A0000-0x0000000003A34000-memory.dmp

          memory/1236-155-0x0000000001410000-0x000000000142A000-memory.dmp

          memory/1236-178-0x0000000003BD0000-0x0000000003C20000-memory.dmp

          memory/1236-182-0x0000000003E30000-0x0000000003E9A000-memory.dmp

          memory/1236-165-0x0000000003C80000-0x0000000003E30000-memory.dmp

          memory/1236-187-0x0000000004120000-0x00000000041F5000-memory.dmp

          memory/1880-194-0x0000000000150000-0x00000000001FA000-memory.dmp

          memory/1880-196-0x000000001B150000-0x000000001B1E4000-memory.dmp

          memory/1880-239-0x000000001CD60000-0x000000001CF09000-memory.dmp

          memory/1880-195-0x000000001AD30000-0x000000001AD9A000-memory.dmp

          memory/1880-200-0x00000000024C0000-0x00000000024DA000-memory.dmp

          memory/1880-199-0x0000000002350000-0x000000000236A000-memory.dmp

          memory/1880-198-0x000000001C790000-0x000000001C916000-memory.dmp

          memory/1880-197-0x000000001B3A0000-0x000000001B550000-memory.dmp