Analysis

  • max time kernel
    149s
  • max time network
    137s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    11/05/2026, 11:26

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 5.4MB
  • Sample260511-nj2msagv2w
  • SHA256 29b84ba0678e99da095d58abcdaa08412d4532c1fd1b0f9eb27ce9c36197e830
  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 15 IoCs
  • Drops file in Windows directory 11 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 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⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2172
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.2.4.9229\036c5dcb409037ee\ScreenConnect.ClientSetup.msi"
      2⤵
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:4956
  • 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 WriteProcessMemory
    PID:4908
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding BE645B3D4FFCA749F2F95A6719798D85 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2648
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI69C1.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240675375 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2548
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:868
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding C510DB71ADB1E750BDD464F25094677F
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2572
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2504

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e589b13.rbs

          • Path C:\Config.Msi\e589b13.rbs
          • Size 10KB
          • SHA256 7d65edf8927eee84230720317859d6f5d1e4bf89d7b9614037af325a8aa3beb6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI69C1.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI69C1.tmp
          • Size 1.0MB
          • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI69C1.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI69C1.tmp-\ScreenConnect.Core.dll
          • Size 538KB
          • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI69C1.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI69C1.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\036c5dcb409037ee\ScreenConnect.ClientSetup.msi
          • Size 9.5MB
          • SHA256 29a8ebc7437c5ce24ed5c5ebb716d799086595eeb8fa955fd101c308e09bd37a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI9C2C.tmp

          • Path C:\Windows\Installer\MSI9C2C.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.1MB
          • SHA256 ada7d30c482cdbf637d5dad96bed32b6750d092b1b9b7e6c47d71c35721e2819
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {74e38c48-6506-4ed5-9271-28f425b94f8f}_OnDiskSnapshotProp

          • Path \??\Volume{568a4ae8-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{74e38c48-6506-4ed5-9271-28f425b94f8f}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 7d7d5c9b819a73d9e2fe46e59c0ee8ca7fa55afca6f5c210edd0a503a7e5ea6d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/868-90-0x0000017C79590000-0x0000017C796BA000-memory.dmp

          memory/2172-7-0x0000000005DC0000-0x0000000006364000-memory.dmp

          memory/2172-3-0x0000000005520000-0x0000000005812000-memory.dmp

          memory/2172-1-0x0000000000FD0000-0x0000000000FD8000-memory.dmp

          memory/2172-8-0x0000000005210000-0x0000000005220000-memory.dmp

          memory/2172-2-0x0000000005210000-0x0000000005220000-memory.dmp

          memory/2172-0-0x0000000005210000-0x0000000005220000-memory.dmp

          memory/2172-11-0x0000000008470000-0x00000000084F7000-memory.dmp

          memory/2172-6-0x0000000005220000-0x00000000053CC000-memory.dmp

          memory/2172-4-0x0000000005140000-0x00000000051CC000-memory.dmp

          memory/2172-5-0x0000000002BE0000-0x0000000002C02000-memory.dmp

          memory/2504-53-0x000001A926100000-0x000001A92622A000-memory.dmp

          memory/2504-92-0x000001A926100000-0x000001A92622A000-memory.dmp

          memory/2548-43-0x0000000005170000-0x000000000531C000-memory.dmp

          memory/2548-39-0x0000000004F30000-0x0000000004FBC000-memory.dmp

          memory/2548-35-0x0000000004E90000-0x0000000004E9A000-memory.dmp

          memory/2548-31-0x0000000004E60000-0x0000000004E8E000-memory.dmp

          memory/4908-52-0x000001E0D3F70000-0x000001E0D409A000-memory.dmp