Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    02/11/2026, 14:08

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample261102-rfwtxatzht
  • SHA256 881cc301cca5bd617ff6add7d9ff037ac1969dea02f70c3e6692c24ed27aa593
  • 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 9 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 4 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.

  • Modifies data under HKEY_USERS 8 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 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:3464
  • 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:2012
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 0BF713FB3AA673542F03B8FE3DE3ED4F C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:900
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI342.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240714796 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:452
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI789.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240715656 10 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:2340
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIDE3.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240717296 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3056
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4520
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding E3B6670772146ED8ED6CDC2EA998D289
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4904
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding D69E150AFB4457773ECA02877C28C651 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4284
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4268
    • C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.ClientService.exe" "?y=Guest&h=instance-sr54lz-relay.screenconnect.com&p=443&s=59a31893-e7bd-4d43-99c7-909e3c8cde9f&k=BgIAAACkAABSU0ExAAgAAAEAAQB5o65hSsBj4%2f33TA4MSptULbKW8Ht6HUy4jpAXTO3qIPhPVrtOn70niSN7yNft2Hu%2bG9UbRJx2611sdRUlieXCC4C6qK2BBWX9xvg9IPdqvE5Nse5KI58u7aj%2bd3K0%2bClj0LVdBO5emaGUHCviO94VOdpz01yxXu4AnrOfWLDhMhfb7lZYWc3jRi3zwksqgp1q07xyUXZdIDtZeTmHBJcSOIS2AG12i0Ef2%2fVE2yZcS%2b3CGsRI0uR6jlzWQexAsMeAHgPZYIw2tCL9mwf3tVlGFJ0Hi0uLnX36FiARZFHsV%2fRsKtmmKeTYKBt3s7rDAvb5aErMb5FgN4BAs%2b6ezvvl&c=&c=screen%20connect&c=&c=&c=&c=&c=&c="
      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:2896
      • C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.WindowsClient.exe" "RunRole" "74ad09e9-588f-4932-b471-0447f2673ea2" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:3488
      • C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.WindowsClient.exe" "RunRole" "a3776c7d-97bd-4d11-88a2-2a119a99c80c" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1236

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5950e6.rbs

          • Path C:\Config.Msi\e5950e6.rbs
          • Size 214KB
          • SHA256 234e14a3f46e073729b479572ce3a531eac2061c913b562a3c9eed262053eda1
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\Client.en-US.resources
          • Size 65KB
          • SHA256 bd8901dd3666277f6d7aa1f4118ad53f5d4229c5d9f67f94e635bf2add3731dd
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.Client.dll
          • Size 413KB
          • SHA256 be1e3522a20c244b3e20b4f7bc2fc736b6103c930d6cf8366e0bb97cb82d5241
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 67f75a75bc19288cac0071e19e7af4463f2ecf4bb75fe13af80a4f0f57144253
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 bc19602c59b0ba4a7a99f791c87298df76d8d62f86a928e112dca285a88a5a77
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.Core.dll
          • Size 583KB
          • SHA256 91ae86fd5439c7d8a54b75cbb60c2ff9bdff84657b962d340d48cdf656c4928d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 9ddaf17f7f802e58c645d42184e0ac33dc755a885bc3637a7d837a4f6ae5fdea
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 89fd40ccc2e2be1bf140e748212922aa4010a7ef4b0465aca958c9d3417e0bdd
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (b34f713f8ab71521)\system.config
          • Size 960B
          • SHA256 d51e3a3828e61cf7293bd59bb870bc0eafce8fcf699fcd2f90451710ac61338e
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 32308105d00835c913e0e77ddfda1c4185f680a67e14a04c062a07f67a1b44c6
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 b28be5dc433c00b29a91f956203506c195c2827a3e815c4fc7c28256c7b02fe3
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 bb57dfb1206ffa79211612fafe503d520d54a5d338dc4f951412e2d27f37ebce
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 0c19517b33f0b0f0f77c38f2414511d795dac0bd930b0cb10db3d44c2b559fa0
          • 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

          MSI342.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI342.tmp
          • Size 1.1MB
          • SHA256 d39e53d74c6840d331b91b9c949db26f7c93a824e9fb104c532346a8c465b6e2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI342.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI342.tmp-\ScreenConnect.Core.dll
          • Size 573KB
          • SHA256 399ab0c1bcf2bf0c7618066d676b6958c2a5f4fed2d8f769f0eeea5492720e4f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI342.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 f35f007dcb154d0346745309630b8cc21fe49638e76dc8dd77a3c62cb0aa754a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI342.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 4c281797c351fed77890634006a51bc3a6c60efa4c831fe21934353f304cdf61
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI789.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI789.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 7fcba418fd772a38e420238d49e8301f23caf47eadcef400ecab8738813d9694
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI5309.tmp

          • Path C:\Windows\Installer\MSI5309.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e5950e7.msi

          • Path C:\Windows\Installer\e5950e7.msi
          • Size 9.8MB
          • SHA256 881cc301cca5bd617ff6add7d9ff037ac1969dea02f70c3e6692c24ed27aa593
          • MD5 SHA1 SHA512 SSDEEP TLSH

          h5mr0aep.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (b34f713f8ab71521)\h5mr0aep.newcfg
          • Size 683B
          • SHA256 2f648c9830d1e17d79a752d9d95ff55c13b51b640b74ec302e700f5bb7060f4d
          • MD5 SHA1 SHA512 TLSH

          tb2wwna2.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (b34f713f8ab71521)\tb2wwna2.newcfg
          • Size 881B
          • SHA256 d6e22069ec8870390d9fda8a600a0be8a338175d3857269946f9d0a6c7386a7c
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (b34f713f8ab71521)\user.config
          • Size 520B
          • SHA256 ea9285946b6e71dfbe0a5e2e3c9f1f56e0f0c5d7e256c2a5f9294acad0a8eaee
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.1MB
          • SHA256 cae4e7640c94fbf8412e58df240a56f79c27bad3b2cd45e90a3c2c5764774487
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {5a511ea7-2683-4f3e-bc37-9186e7770bd1}_OnDiskSnapshotProp

          • Path \??\Volume{ba718129-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{5a511ea7-2683-4f3e-bc37-9186e7770bd1}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 bb4fe79cd67bbb8d5078b93114d8eea5098d3c89a1ace43a5d04ae51c7199dca
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/452-41-0x0000000004E60000-0x0000000005010000-memory.dmp

          memory/452-29-0x0000000002760000-0x000000000278E000-memory.dmp

          memory/452-33-0x00000000027A0000-0x00000000027AC000-memory.dmp

          memory/452-42-0x00000000055C0000-0x0000000005B64000-memory.dmp

          memory/452-37-0x0000000004C10000-0x0000000004CA6000-memory.dmp

          memory/2340-74-0x0000000004F90000-0x0000000004FB8000-memory.dmp

          memory/2896-163-0x00000000044A0000-0x0000000004536000-memory.dmp

          memory/2896-200-0x0000000004A70000-0x0000000004B02000-memory.dmp

          memory/2896-180-0x00000000048A0000-0x00000000048F0000-memory.dmp

          memory/2896-202-0x00000000048F0000-0x0000000004931000-memory.dmp

          memory/2896-167-0x00000000046F0000-0x00000000048A0000-memory.dmp

          memory/2896-204-0x0000000004C50000-0x0000000004D26000-memory.dmp

          memory/2896-157-0x0000000004290000-0x00000000042AA000-memory.dmp

          memory/2896-199-0x0000000004960000-0x00000000049CC000-memory.dmp

          memory/3488-225-0x0000000000930000-0x000000000094A000-memory.dmp

          memory/3488-219-0x00000000000D0000-0x0000000000180000-memory.dmp

          memory/3488-223-0x000000001B0D0000-0x000000001B166000-memory.dmp

          memory/3488-224-0x000000001B320000-0x000000001B4D0000-memory.dmp

          memory/3488-220-0x000000001AC60000-0x000000001ACCC000-memory.dmp

          memory/3488-226-0x000000001C2E0000-0x000000001C466000-memory.dmp