Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    02/02/2026, 07:23

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 12.0MB
  • Sample260202-h71shaav5e
  • SHA256 78fa92bfeef7328387ff3d276112ea4cffbda6358dcec76a5d0b46260c835302
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Sets service image path in registry 2 TTPs 1 IoCs
  • ConnectWise ScreenConnect remote access tool

    ConnectWise ScreenConnect is a remote desktop tool that can be used as a backdoor.

  • Badlisted process makes network request 2 IoCs

    Network request originating from process or tool commonly abused by malware.

  • 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 3 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 17 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 22 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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 7 IoCs
  • Suspicious use of SendNotifyMessage 5 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:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe
    "C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2480
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.9.8.9518\d62e9df9c58bd4a2\ScreenConnect.ClientSetup.msi"
      2⤵
      • Badlisted process makes network request
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:5080
  • 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:2404
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding B56E607BC98A60376C29040A4DD68CBC C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2504
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI49E5.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240667171 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:652
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:5896
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 8DE95E8440AC549BA69D09D00BEE7C9C
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5864
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 508618D55E3CCA77AC9208CE14818DC9 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4584
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5836
    • C:\Program Files (x86)\ScreenConnect Client (d62e9df9c58bd4a2)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (d62e9df9c58bd4a2)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-f81h64-relay.screenconnect.com&p=443&s=719b22e5-30ac-4485-809c-1ff3bbed3e33&k=BgIAAACkAABSU0ExAAgAAAEAAQCxZHqXKLOQMiCgMIAUTQ8krZa%2ft1RlwDaVb7t2ZjPU%2fmNR7yCt9vZAr8WC0wbay2fMwnqV4DM3%2f57LZIWktOYrnxAZToC4raehpLPv0crbi2JEK6tqIc56%2bY6rbb9OtJjVSd3ZR%2bkw6499H7zyMNUSiD6Vee1EBntyovelF71n%2fEC4PaZBDkIiksOihKSSmOqQpsamh%2fh%2fcAKIe8weQ%2b387XpZwABENmfRAFDxR%2b%2f%2bGECPtBAm%2bbllrpD9kDILTpqP9%2bQ%2fYE%2bXAWNHCunIuGHjHb%2bL3gY1OA2jPa%2bCrb2TXnYk9SRvawQ8BDbE1e79qV40j8vaNbpymh3puS3mW07o"
      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:5792
      • C:\Program Files (x86)\ScreenConnect Client (d62e9df9c58bd4a2)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (d62e9df9c58bd4a2)\ScreenConnect.WindowsClient.exe" "RunRole" "70ea989a-3f7a-445b-a0a2-10a8fe74c854" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1848
      • C:\Program Files (x86)\ScreenConnect Client (d62e9df9c58bd4a2)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (d62e9df9c58bd4a2)\ScreenConnect.WindowsClient.exe" "RunRole" "8de9ea2f-eeed-41ca-917b-077171210266" "System"
        2⤵
        • Drops file in System32 directory
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:2572

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e5874bf.rbs

          • Path C:\Config.Msi\e5874bf.rbs
          • Size 214KB
          • SHA256 ebfdbeaa5b71c3afcaec98fa73ac01adcaf1d85177bedd5f36b9e947ece89bda
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (d62e9df9c58bd4a2)\Client.en-US.resources
          • Size 64KB
          • SHA256 efdb0b4fcc38b52cbf72336bd107a814db8454003f3495de21e2026a148823ea
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (d62e9df9c58bd4a2)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (d62e9df9c58bd4a2)\ScreenConnect.Client.dll
          • Size 399KB
          • SHA256 1d1c8db8e0b387f244a0461fb6794af70ee88a17f71d8dcc6dd0874a0c8dab7f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (d62e9df9c58bd4a2)\ScreenConnect.ClientService.dll
          • Size 78KB
          • SHA256 29adce52ff944f421dddfc6516fac0e229656b57c1b12630e89d79e6f0ced806
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (d62e9df9c58bd4a2)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 f1d99bcdff1dc1ed8032b43cc3a8e60efc36425662642aed62678244f3527460
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (d62e9df9c58bd4a2)\ScreenConnect.Core.dll
          • Size 553KB
          • SHA256 cddbbd7794d1a2b4238625e8b84eb98df32abf63b29144fd5f9304728244b2d0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (d62e9df9c58bd4a2)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 78ecf3c5e30e91b3a6c0f19d0b70d054922e7fd94c94ab93a0a925d3d568ffb8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (d62e9df9c58bd4a2)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (d62e9df9c58bd4a2)\ScreenConnect.WindowsClient.exe
          • Size 604KB
          • SHA256 4f027dda50c064be1e2840c5b7d46a801162717416ca7889c2b164777942328a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (d62e9df9c58bd4a2)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (d62e9df9c58bd4a2)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 838KB
          • SHA256 98ba4d453ec6758132971444fd4bcf55a16433e76745eff18680b933cf78c155
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (d62e9df9c58bd4a2)\system.config
          • Size 980B
          • SHA256 82cf3e559c7b5de63ec46c48d3176ed1d508656873b8c0c72eb940da1efc754e
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_AE4B983DE066DC93BB134616BF886138

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_AE4B983DE066DC93BB134616BF886138
          • Size 727B
          • SHA256 6c09dc3efe5d5fef52c7b4a3f0a3e5f17f4374605610cca77d48d9201b68e5d5
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_AE4B983DE066DC93BB134616BF886138

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_AE4B983DE066DC93BB134616BF886138
          • Size 408B
          • SHA256 effd1d954a1a89af5f00683dd01fc88023e4b793f8631cbd0476c7ceba2b4b64
          • MD5 SHA1 SHA512 TLSH

          MSI49E5.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI49E5.tmp
          • Size 1.1MB
          • SHA256 652f517056a6f237b376fde454d2f033594bf9e272b6c0ec7756d618b5685c09
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI49E5.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI49E5.tmp-\ScreenConnect.Core.dll
          • Size 543KB
          • SHA256 0e457a4dea573bd4d98353bc4a196faa4a7ea50dbd87e8910091baaecf002cd0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI49E5.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 9cd4424a6b2b61b21bc47aeeb1882f5eebdde5f8d7f204d023cc403e29534377
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI49E5.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 81950e86208234f80609387f180480ac6d9caf568b595a14bacfdaa2d13eefde
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.9.8.9518\d62e9df9c58bd4a2\ScreenConnect.ClientSetup.msi
          • Size 9.6MB
          • SHA256 9b4937956df3382e643e65690112aaa7a5a84eab4415b889b0976c9dc32faaf2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI75C8.tmp

          • Path C:\Windows\Installer\MSI75C8.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.6MB
          • SHA256 8b5e3616274fe3e203c0f8767e7321aa0a00f7808b8bb96e8b46110906d6e432
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {ba9ecd38-4c29-4860-b357-5c7544e01933}_OnDiskSnapshotProp

          • Path \??\Volume{d3d389e6-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{ba9ecd38-4c29-4860-b357-5c7544e01933}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 a89552d75780d4ae7a815ee9f1ac92fcaa9527df5f0ed5a59c162d20c1b5e066
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/652-36-0x0000000003120000-0x000000000314E000-memory.dmp

          memory/652-44-0x0000000005590000-0x000000000561E000-memory.dmp

          memory/652-48-0x00000000057D0000-0x000000000597E000-memory.dmp

          memory/652-40-0x0000000003110000-0x000000000311A000-memory.dmp

          memory/1848-122-0x0000000000E30000-0x0000000000ECC000-memory.dmp

          memory/1848-133-0x000000001BA40000-0x000000001BAA8000-memory.dmp

          memory/1848-139-0x000000001B9F0000-0x000000001BA08000-memory.dmp

          memory/1848-140-0x000000001BAB0000-0x000000001BAF1000-memory.dmp

          memory/1848-138-0x00000000030C0000-0x00000000030D8000-memory.dmp

          memory/1848-137-0x000000001D090000-0x000000001D218000-memory.dmp

          memory/1848-135-0x000000001C0D0000-0x000000001C27E000-memory.dmp

          memory/1848-134-0x000000001BE90000-0x000000001BF1E000-memory.dmp

          memory/2480-4-0x0000000001EA0000-0x0000000001EA8000-memory.dmp

          memory/2480-7-0x0000000005E90000-0x000000000603E000-memory.dmp

          memory/2480-2-0x0000000005DF0000-0x0000000005E00000-memory.dmp

          memory/2480-9-0x0000000005DF0000-0x0000000005E00000-memory.dmp

          memory/2480-3-0x0000000005DF0000-0x0000000005E00000-memory.dmp

          memory/2480-1-0x0000000001E80000-0x0000000001E88000-memory.dmp

          memory/2480-5-0x0000000005E00000-0x0000000005E8E000-memory.dmp

          memory/2480-0-0x0000000005DF0000-0x0000000005E00000-memory.dmp

          memory/2480-6-0x0000000002080000-0x00000000020A4000-memory.dmp

          memory/2480-8-0x00000000065F0000-0x0000000006B96000-memory.dmp

          memory/5792-98-0x0000000003C00000-0x0000000003C8E000-memory.dmp

          memory/5792-102-0x0000000003E40000-0x0000000003FEE000-memory.dmp

          memory/5792-92-0x0000000003B40000-0x0000000003B58000-memory.dmp

          memory/5792-111-0x0000000004040000-0x0000000004081000-memory.dmp

          memory/5792-109-0x00000000041C0000-0x0000000004252000-memory.dmp

          memory/5792-104-0x0000000003FF0000-0x0000000004040000-memory.dmp

          memory/5792-108-0x00000000040B0000-0x0000000004118000-memory.dmp

          memory/5792-113-0x00000000043B0000-0x0000000004485000-memory.dmp