Analysis

  • max time kernel
    149s
  • max time network
    124s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260618-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    23/06/2026, 12:03

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 5.4MB
  • Sample260623-n8cpyscw3x
  • SHA256 b5fd21ff8bb89ae62c4e0ba14fdeb11ba5c42aef94a9718e830ea113a5cde880
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Signed with revoked ConnectWise certificate 1 IoCs

    Binary is signed using a ConnectWise certificate revoked for key compromise.

  • Loads dropped DLL 11 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 17 IoCs
  • Drops file in Windows directory 15 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 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 3 IoCs
  • Modifies registry class 32 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 5 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:1344
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.2.4.9229\d94249fde0a3fd71\ScreenConnect.ClientSetup.msi"
      2⤵
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      PID:5836
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • 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 SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2872
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding F69DB22658AB7A9EF0C66EBE944F7549 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5748
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIBADF.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240696187 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4808
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:1420
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding D1E1AA787F02C737E218BAF155613331
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2460
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5964

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e590101.rbs

          • Path C:\Config.Msi\e590101.rbs
          • Size 10KB
          • SHA256 cede6b19c7342238b8c76d1477f6d27722752a38159e462003d22832ccf13b4e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIBADF.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIBADF.tmp
          • Size 1.0MB
          • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

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

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIBADF.tmp-\ScreenConnect.Core.dll
          • Size 538KB
          • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIBADF.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIBADF.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.2.4.9229\d94249fde0a3fd71\ScreenConnect.ClientSetup.msi
          • Size 12.9MB
          • SHA256 7dab501263c9dd581fa257eef24f9d6bfac618aff0e4bbf696d13f309eb8e71f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI670.tmp

          • Path C:\Windows\Installer\MSI670.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 85ce0cd37ce96918999f779e29e264cd70a053ffbc709c4003a08491711f2dd8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {a980916f-4f58-47c4-b094-230a8e64fc7f}_OnDiskSnapshotProp

          • Path \??\Volume{fc7fe687-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{a980916f-4f58-47c4-b094-230a8e64fc7f}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 c0e685756254b59f62a715a19a9973a072904dad4f583cdadfca78905790ace8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1344-6-0x0000000005620000-0x00000000057CC000-memory.dmp

          memory/1344-4-0x00000000054C0000-0x000000000554C000-memory.dmp

          memory/1344-13-0x0000000074460000-0x0000000074C1C000-memory.dmp

          memory/1344-9-0x0000000074460000-0x0000000074C1C000-memory.dmp

          memory/1344-8-0x0000000074460000-0x0000000074C1C000-memory.dmp

          memory/1344-1-0x0000000002F90000-0x0000000002F98000-memory.dmp

          memory/1344-7-0x00000000061D0000-0x000000000678A000-memory.dmp

          memory/1344-10-0x0000000074460000-0x0000000074C1C000-memory.dmp

          memory/1344-0-0x0000000074472000-0x0000000074473000-memory.dmp

          memory/1344-2-0x0000000005920000-0x0000000005C12000-memory.dmp

          memory/1344-3-0x0000000074460000-0x0000000074C1C000-memory.dmp

          memory/1344-5-0x0000000003030000-0x0000000003052000-memory.dmp

          memory/4808-36-0x0000000005150000-0x000000000515A000-memory.dmp

          memory/4808-44-0x0000000005430000-0x00000000055DC000-memory.dmp

          memory/4808-40-0x00000000051F0000-0x000000000527C000-memory.dmp

          memory/4808-32-0x0000000005120000-0x000000000514E000-memory.dmp