Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    07/09/2026, 18:21

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 12.2MB
  • Sample260907-wznd4aek21
  • SHA256 57cf81533546785a6340b393330eb5cad02d8a27a95241f6940a702a42e3b4fd
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 5 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 16 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
  • 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.

  • 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 14 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 11 IoCs
  • Suspicious use of SendNotifyMessage 9 IoCs
  • Suspicious use of WriteProcessMemory 10 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:2840
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.5.9742\5a0829f1c32c73db\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:3944
  • 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:2096
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding D78814B4C6D02B7CC46536911AE44168 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1452
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI5639.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240670375 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:456
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI5ACE.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240671453 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4760
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI6109.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240673031 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:116
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:1296
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 77CC78AFE54F56C89C5BE337AE8D1383
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4160
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 6BB0CFE22EC01C9FE0789927F7E381DF E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1736
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4692
    • C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-a3uueu-relay.screenconnect.com&p=443&s=96223046-ddba-41ad-8d28-a836e4402a14&k=BgIAAACkAABSU0ExAAgAAAEAAQBhkVx3micm1d3XkTIEnC94jWPulcT9imEb%2feAVfzWjfwPr3h93WyPTiUD1ozD9zPb3njtVIYCp5GsjGRKBZm8UJncx08%2fC0Wj81xYIt21tvimlL4t%2bh9AZQfDyQ44tAjeEsSB%2bEfSYpGm8atcmDYTfIjYIHGlWSjjk4PVEN42cVr2J2KCcojBCMdWt4yiSitb%2bwAccllYpqVoFxrULgX%2bIkimIoi3H78qn98Vm9wSV84CUMcXsQrwcgoPe%2fwRZ9Yig5HdeZB9SryaYtif%2fLtcR8PlA1RwVp4DMQhOMsZp9KGpMBGnDRpmV2bKtYLE6jX%2fCfhibdckqdZdUa2yBQWbb"
      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:2648
      • C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.WindowsClient.exe" "RunRole" "62375b7c-5317-423b-a725-6f00ebd46d8d" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:3772
      • C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.WindowsClient.exe" "RunRole" "ab961ddf-929a-4497-ad86-61933d9f2fc8" "System"
        2⤵
        • Drops file in System32 directory
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:1608

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e58b2b2.rbs

          • Path C:\Config.Msi\e58b2b2.rbs
          • Size 214KB
          • SHA256 6a9a001d85b268d4de5969b58ab32fbe1f0e6eba3e8d95f6aad8855dd6a43d61
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 27e873d0fceefdd1a12ca77e3bbecec2ece7acdba433b47dca102c35e1c5896c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 78fa9cf69577f6990275c7c472f7114f9d0c85e660f3b9c81b085fc3cfbc8673
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 5956f9afb3ba610c38b2cfda88dd15be98783963769a12020c93ce05e749b3c3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.Core.dll
          • Size 582KB
          • SHA256 4eab8752d05cd31bafd07edde7d18061cb63eea99af3132460e6dc08bb5f9e73
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ec4de5e6e9c079a30a5780d79ee662e0a4c6d009f0e3f911edc560973fb17d1e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 7511e679597572782241ff989c065c02f9f5a12ab37290b69a27226eda57ce75
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (5a0829f1c32c73db)\system.config
          • Size 962B
          • SHA256 4df39f5f40aa987762d2f6a706f5744977467886b06e4ca917c489c844176a82
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 727B
          • SHA256 9b12748f9dddcd7d8878f5fd9d8806639c3b82b63bf0899622b84befb80f1def
          • MD5 SHA1 SHA512 TLSH

          BA74182F76F15A9CF514DEF352303C95

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\BA74182F76F15A9CF514DEF352303C95
          • Size 737B
          • SHA256 3d8750173f7f4dd973ff6dcea00baca1a2ff1047371bdf20363583c61157dc11
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
          • Size 404B
          • SHA256 82d067c666b601198198e52bfffbe55d8cee8d5a49de5af44ddaa6480456bf9b
          • MD5 SHA1 SHA512 TLSH

          BA74182F76F15A9CF514DEF352303C95

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\BA74182F76F15A9CF514DEF352303C95
          • Size 248B
          • SHA256 aa59ace2ce7ed4f5c7e88c567190494130a63854aa0c835fa2a07dd665c18209
          • 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

          MSI5639.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5639.tmp
          • Size 1.1MB
          • SHA256 400ff5b9a4439339876282909b23c397ffa208f4bcf64460fa2521284acf0b6e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5639.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5639.tmp-\ScreenConnect.Core.dll
          • Size 572KB
          • SHA256 74f2d225b492eb77a5654bcaafec5162d0c5f72de884daa4c32daf54e2bff3d7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5639.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 2022f13b1f562d3cbef3a3926f0370a2de64e57ff281a121f90001a47499a356
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5639.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 93f910f732855000861c1b4e6c55a2dee0a8cbb2172d89c7a2bc99053746c193
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5ACE.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5ACE.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 361bbc692084841e4c8d22c89ca89c711d0fe17bc8759241736531a2f28de25b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.6.5.9742\5a0829f1c32c73db\ScreenConnect.ClientSetup.msi
          • Size 9.8MB
          • SHA256 5f4f090c7e86a3f829cd81a7eda485212203c345aec9841c7d38d761aa5a2083
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIB4E5.tmp

          • Path C:\Windows\Installer\MSIB4E5.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ers3ljgg.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (5a0829f1c32c73db)\ers3ljgg.newcfg
          • Size 683B
          • SHA256 ccfb219fb17b6ccb8a79a20555145a920396894aa8a3b51374825a4656e800ee
          • MD5 SHA1 SHA512 TLSH

          mgjjk42k.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (5a0829f1c32c73db)\mgjjk42k.newcfg
          • Size 880B
          • SHA256 163ae4a36dabcbd94a8897c3d84161cbe763ee8950dbc3785750fcdc9b0f3c29
          • MD5 SHA1 SHA512 TLSH

          pszpxy4v.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (5a0829f1c32c73db)\pszpxy4v.newcfg
          • Size 880B
          • SHA256 dd26fd345e01710c18984f0f78a611374f84bd33b055191be3a4eda4da976354
          • MD5 SHA1 SHA512 TLSH

          ulwsqq4t.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (5a0829f1c32c73db)\ulwsqq4t.newcfg
          • Size 880B
          • SHA256 4c1c0923a97cbe56e77492dcd2b01973d99fa05d388f47b57c022db09a217be3
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (5a0829f1c32c73db)\user.config
          • Size 520B
          • SHA256 d6f64326a814f9695f5fa8a31b41225fbdcc48e2db7f62ddf81b012194c74cae
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.1MB
          • SHA256 081fa4d46178dc183ab1aef68cc22e35310bc8f99627d220a5a6ff941a43e7c3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {4e4b45c5-228b-4703-8603-2449fe63b11d}_OnDiskSnapshotProp

          • Path \??\Volume{4588d6e0-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{4e4b45c5-228b-4703-8603-2449fe63b11d}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 bbe62d82f433138961ff3e2a689a8b0d3095c3dec89d3e927890aca517d1e9fe
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/456-47-0x0000000002D80000-0x0000000002E16000-memory.dmp

          memory/456-43-0x0000000002CD0000-0x0000000002CDC000-memory.dmp

          memory/456-39-0x0000000002C90000-0x0000000002CBE000-memory.dmp

          memory/456-51-0x0000000005360000-0x0000000005510000-memory.dmp

          memory/2648-182-0x0000000004170000-0x00000000041C0000-memory.dmp

          memory/2648-207-0x0000000004230000-0x000000000429C000-memory.dmp

          memory/2648-211-0x0000000004120000-0x0000000004161000-memory.dmp

          memory/2648-213-0x0000000004700000-0x00000000047D6000-memory.dmp

          memory/2648-176-0x00000000042D0000-0x0000000004480000-memory.dmp

          memory/2648-172-0x0000000004080000-0x0000000004116000-memory.dmp

          memory/2648-166-0x0000000003F20000-0x0000000003F3A000-memory.dmp

          memory/2648-209-0x0000000004520000-0x00000000045B2000-memory.dmp

          memory/2840-2-0x00000000064C0000-0x00000000064D0000-memory.dmp

          memory/2840-8-0x00000000064C0000-0x00000000064D0000-memory.dmp

          memory/2840-4-0x00000000063B0000-0x0000000006446000-memory.dmp

          memory/2840-7-0x0000000006C30000-0x00000000071D4000-memory.dmp

          memory/2840-1-0x0000000003CD0000-0x0000000003CD8000-memory.dmp

          memory/2840-5-0x0000000006460000-0x0000000006488000-memory.dmp

          memory/2840-6-0x00000000064D0000-0x0000000006680000-memory.dmp

          memory/2840-3-0x00000000062F0000-0x00000000062FC000-memory.dmp

          memory/2840-0-0x00000000064C0000-0x00000000064D0000-memory.dmp

          memory/3772-227-0x0000000000410000-0x00000000004C0000-memory.dmp

          memory/3772-230-0x000000001B5D0000-0x000000001B780000-memory.dmp

          memory/3772-229-0x000000001B380000-0x000000001B416000-memory.dmp

          memory/3772-231-0x0000000002540000-0x000000000255A000-memory.dmp

          memory/3772-232-0x000000001C590000-0x000000001C716000-memory.dmp

          memory/3772-228-0x000000001AFA0000-0x000000001B00C000-memory.dmp

          memory/4760-83-0x0000000004760000-0x0000000004788000-memory.dmp