Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    13/11/2026, 12:11

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample261113-pc26eaad75
  • SHA256 4e9f935612a8f60fafd3aff6815e75465b50a51ea6fd81813acb485d04416284
  • 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.

  • 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
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • 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 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.

  • 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 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:\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:3160
  • 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:3768
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 34FD3CFC6BDC8F70D4575B94779A407A C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3776
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI1FF2.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240722078 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4132
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI264C.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240723625 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:3884
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI2CE4.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240725234 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2976
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4276
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 67E0E083A70743094E0B134F5058340F
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3544
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 5F69AA9C097C875156D2AB26952BED90 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4204
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2268
    • C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-ghwuiv-relay.screenconnect.com&p=443&s=92d8a2d0-0f62-4ada-b4d3-b7c18fc18e3f&k=BgIAAACkAABSU0ExAAgAAAEAAQDthRgStADE4nkAIOjEw3RohOwqXwivcvDf3vcVGYaZFCWXPdC4%2f7E1xIObDPfFr9xQu9HAh%2b3K2E%2fmIGV7j1JJZpN65Lq262Z2Hfmq162uRF91XJsWVOFPFbbWieceENCqlPA4yaHOotRttTj9Pw1hXs%2fsUHMg3jSI0LRC344B8sKU5t3NbjZjWRAdxcylWoeaKrJr0Ik2hoTjIT0Tjq1yr699Do3q3EPoteIEj0gvDJ07uzklmMR7fGZuSA%2fHW3MNh1gdcRDJysAs2J7LRE9BOACGuo5SohILBIroG5yLd0K3sRWme5RSzgYKW%2fZ9znVlEaqaosQ9%2bTxllUNK1YWu&t=wesley.doc"
      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:3368
      • C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.WindowsClient.exe" "RunRole" "8be0ca63-fe76-4475-b79e-1ab7ef4fc340" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2784
      • C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.WindowsClient.exe" "RunRole" "4dd01504-0f37-46dc-b077-c6ff0f2458be" "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:5032

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e596e22.rbs

          • Path C:\Config.Msi\e596e22.rbs
          • Size 214KB
          • SHA256 8b337f5c40db07bd798c5b5beb7cb8f5bf7b0d0f9872b24d244e352809acab18
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\Client.en-US.resources
          • Size 65KB
          • SHA256 bd8901dd3666277f6d7aa1f4118ad53f5d4229c5d9f67f94e635bf2add3731dd
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.Client.dll
          • Size 413KB
          • SHA256 fc4fd565a761c1cbc2ca41c52034067768a1f550811a7870f7dd5a4e935adcc2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 b927c1c3ce76613153782b3bee3b4b16499b1dd49abb80403cf9b0fb8eb47d2a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 fc7de50a245b04940fc028a781fa5df6b6bebe0f0e9668cb1318eb9ca9548588
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.Core.dll
          • Size 583KB
          • SHA256 dff5b501a73eca3e042364659a5c0e90ee31af633fe20e9242f537e1e57d0fc8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 bd1bd1aba8065866b8f49022be1fc561e980a9b6ef1c438ce761beea034d5160
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.WindowsClient.exe
          • Size 689KB
          • SHA256 6de7ff9bd32ceb79232ed76849225283d46aabd07cbc3bc52ca76912b4d807e4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 ea2d2c8354c1ee47e8bae366fcd5afa75455000df9562f3cba366bebf2c2eda6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (83c98c656a2e2ef3)\system.config
          • Size 958B
          • SHA256 5a39b3927e4635f3e11da15a5b2931d20881d289a926f025d7d05d600538820e
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 3f36f3cef83c271d25c175cbec0162a9b1e6500e1626aa1ab06685b1cec19b72
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 1e416c31c090fe83a8eae7588a7301d1d9b7f8d1a9878ec5aeb23bf2028a2bbf
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 5b09099e8ce1c86b4c8bbb282de15dfc5d78ca96a4732d855e1dc2a8b9855c4b
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 02b05191ff7f6ba8548d2c2e1dedea05a55243adb30e4b45c359fde33f1b351c
          • 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

          MSI1FF2.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1FF2.tmp
          • Size 1.1MB
          • SHA256 f751ccdd41a060c1609813602f7d87cf7fcd36743a30ed64c8489ac4e674545d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1FF2.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1FF2.tmp-\ScreenConnect.Core.dll
          • Size 573KB
          • SHA256 27f353041637adcdb1e73ccf895ec1b09bdca8ad392e00e56147a0a724ee345a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1FF2.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 f76e37b09b6b403e1e03cf3f0641866d6e239bdeb4f2cfeadbedc91d65cee0ed
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1FF2.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 a5191e82c924733b8a131d7f479c7b7e11755e3e6e996b325f9c0758c0587f33
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI264C.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI264C.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 11d45353da749c175b3f31d1ddc0480d83196d5115323da829ae4e693b287380
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI6FF7.tmp

          • Path C:\Windows\Installer\MSI6FF7.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e596e23.msi

          • Path C:\Windows\Installer\e596e23.msi
          • Size 9.8MB
          • SHA256 4e9f935612a8f60fafd3aff6815e75465b50a51ea6fd81813acb485d04416284
          • MD5 SHA1 SHA512 SSDEEP TLSH

          niyj2cov.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (83c98c656a2e2ef3)\niyj2cov.newcfg
          • Size 683B
          • SHA256 1e2da1ef4f2a25ec71ae27c4ab947af3f9d5668d14a0ad85069c9ae74f801a14
          • MD5 SHA1 SHA512 TLSH

          rbmctzbt.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (83c98c656a2e2ef3)\rbmctzbt.newcfg
          • Size 881B
          • SHA256 0c0f59dc956867dcb0a647fb5a43a71438d4ca8fecfda591899c687646713f2c
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (83c98c656a2e2ef3)\user.config
          • Size 520B
          • SHA256 6141bdc49a5c144eecff0e501810a911a8467a7b5eaaa83e381c5bdcac699e14
          • MD5 SHA1 SHA512 TLSH

          memory/2784-225-0x00000000022D0000-0x00000000022EA000-memory.dmp

          memory/2784-226-0x000000001C8F0000-0x000000001CA76000-memory.dmp

          memory/2784-221-0x00000000001B0000-0x0000000000260000-memory.dmp

          memory/2784-224-0x000000001B500000-0x000000001B6B0000-memory.dmp

          memory/2784-223-0x000000001B2B0000-0x000000001B346000-memory.dmp

          memory/2784-222-0x000000001AEA0000-0x000000001AF0C000-memory.dmp

          memory/3368-155-0x0000000003D60000-0x0000000003D7A000-memory.dmp

          memory/3368-161-0x0000000003FD0000-0x0000000004066000-memory.dmp

          memory/3368-202-0x0000000004650000-0x0000000004726000-memory.dmp

          memory/3368-198-0x0000000004470000-0x0000000004502000-memory.dmp

          memory/3368-200-0x0000000004110000-0x0000000004151000-memory.dmp

          memory/3368-171-0x00000000040C0000-0x0000000004110000-memory.dmp

          memory/3368-165-0x0000000004220000-0x00000000043D0000-memory.dmp

          memory/3368-197-0x0000000004180000-0x00000000041EC000-memory.dmp

          memory/3884-74-0x0000000005310000-0x0000000005338000-memory.dmp

          memory/4132-42-0x0000000005400000-0x00000000059A4000-memory.dmp

          memory/4132-29-0x00000000025B0000-0x00000000025DE000-memory.dmp

          memory/4132-33-0x00000000025E0000-0x00000000025EC000-memory.dmp

          memory/4132-37-0x0000000002690000-0x0000000002726000-memory.dmp

          memory/4132-41-0x0000000004CA0000-0x0000000004E50000-memory.dmp

          memory/5032-227-0x0000000003140000-0x0000000003181000-memory.dmp