Analysis

  • max time kernel
    149s
  • max time network
    129s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    18/08/2026, 23:08

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 5.4MB
  • Sample260818-243bpsap4s
  • SHA256 7360d57dc3ba95de43e2e8f45c990edbf1bd90b3d8dc0bc5b33e37ed45c09dc5
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • 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.

  • Signed with revoked ConnectWise certificate 5 IoCs

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

  • ConnectWise ScreenConnect remote access tool

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

  • 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.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 22 IoCs
  • 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 Program Files directory 17 IoCs
  • Drops file in Windows directory 17 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.

  • Modifies data under HKEY_USERS 9 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 22 IoCs
  • Suspicious use of SendNotifyMessage 20 IoCs
  • Suspicious use of WriteProcessMemory 7 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:2736
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.3.2.9271\800142fb698ba006\ScreenConnect.ClientSetup.msi"
      2⤵
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:1104
  • 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:2780
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 96D378CBD27A6466A550C36D3C314B25 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5360
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI39B8.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240663046 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5216
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:5148
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding FE25953C729AB04465940E57753829BC
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5160
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding E84134A7B456DB0F879122730F2E133B E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:3136
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3196
    • C:\Program Files (x86)\ScreenConnect Client (800142fb698ba006)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (800142fb698ba006)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-x9vgan-relay.screenconnect.com&p=443&s=8d8b192b-82a2-4ee1-9069-eb3c25985993&k=BgIAAACkAABSU0ExAAgAAAEAAQDp7UTlisQb3b3R0C781rZeSZCLsRBC7j4ePUg%2fwGYakz3CRqMipNcM8I1J%2fT3%2booM1Kcr3Ohqlvmkl5KkNgpN%2bqtn2%2fTpYc8VdZLmDtsw8lVvTumB3E5VMfmCN6PDJrpb9p1xKu3WfJ1BSvmPEEt%2bgZ0tOejIZXHfuWd0PPmBTj7JBm4w9wtfOlT3PhToW5Tr0jhIp7ODvtYaodHnrhZmMe8h7gFbTJpN36levLI8Hsgoj5TSKl1rETXseE5b8lCiPsEQWF9X0UCxW6O9BakMw1GAnjs%2bmvDanxq0p3elWTEJYyS6sfda4VY0H9rxlrgHZB7c9CMUqnEA0jauQ92rH"
      1⤵
      • Sets service image path in registry
      • 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:3012
      • C:\Program Files (x86)\ScreenConnect Client (800142fb698ba006)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (800142fb698ba006)\ScreenConnect.WindowsClient.exe" "RunRole" "a748d6bb-ca4c-4c2d-8fd5-2cf1591e1eec" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:5156

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e587dc7.rbs

          • Path C:\Config.Msi\e587dc7.rbs
          • Size 214KB
          • SHA256 9b1ac477ea88678a3d966fe99c96f6ca4905bdf717de3d615a16e8ed15a2a2de
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (800142fb698ba006)\Client.en-US.resources
          • Size 49KB
          • SHA256 b26b7a988aba7f94473468cae82846bb672a422b016ed1907d187a5c3bb0f8a0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (800142fb698ba006)\Client.resources
          • Size 28KB
          • SHA256 95b299c8c163731707e8134946059a28c668c2b65b48f57eac2847dbe4beb63e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (800142fb698ba006)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 33f8abd5722ab19aeacfe24319cda4433b0bf9b482dad4865685975c11c15534
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (800142fb698ba006)\ScreenConnect.ClientService.dll
          • Size 67KB
          • SHA256 554ba93c3c34fc5cf6cb49ac7285069e853aa5543219e012bf0e9ca4400c3255
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (800142fb698ba006)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 4fe150116089d55c48748a97985f1d18054db5758020b193ad31d63e849b57f6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (800142fb698ba006)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (800142fb698ba006)\ScreenConnect.WindowsClient.exe
          • Size 595KB
          • SHA256 465e9cee277db463677b2b593809e794279d64314b4fa736aa93780a0f7e3975
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (800142fb698ba006)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (800142fb698ba006)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (800142fb698ba006)\app.config
          • Size 892B
          • SHA256 3e3c4504e20c0b662297df21eff7ef7d610cc9c43ad91fe506e23c12b8e45481
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (800142fb698ba006)\system.config
          • Size 958B
          • SHA256 73a8fbae09ac85c6e1e5fbf359bbfb61064c31b78add7e3eb42a91728581d0f4
          • MD5 SHA1 SHA512 TLSH

          MSI39B8.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI39B8.tmp
          • Size 1.0MB
          • SHA256 64ddf83b4acb09b518518e07a8ffd0446d256ff842c113efa1cdb6378fdf1018
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI39B8.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI39B8.tmp-\ScreenConnect.Core.dll
          • Size 539KB
          • SHA256 51d9dcd755a424b8b3122350bbcc02d453880c39636fb1e0265084161afca983
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI39B8.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 8f4a00b34720f19b0e67dc957085ad1986e58bb16a1abcc580dab21bcd61382d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI39B8.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 602a640e2d9f94acfe47d3946f7dd088992431e24b670d40233e1ae6e9e270ad
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.3.2.9271\800142fb698ba006\ScreenConnect.ClientSetup.msi
          • Size 9.5MB
          • SHA256 9441f8f2c4df5eb4fe4a928b6b85fce5b203b24f7787f4957901851b7aa1002b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI8096.tmp

          • Path C:\Windows\Installer\MSI8096.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 e94327212b4351ff87e643690389d72cee5eda88ed74807f207647848a7db599
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {fbc70d56-68c2-4380-8e66-277387e7992d}_OnDiskSnapshotProp

          • Path \??\Volume{731567b7-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{fbc70d56-68c2-4380-8e66-277387e7992d}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 c481c7c472b3049c30d51c513d0566a385481ce980c1b059bb5e88df0ccf4852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/2736-6-0x00000000015F0000-0x0000000001612000-memory.dmp

          memory/2736-5-0x0000000005420000-0x00000000054AE000-memory.dmp

          memory/2736-1-0x00000000014F0000-0x00000000014F8000-memory.dmp

          memory/2736-2-0x00000000054C0000-0x00000000054D0000-memory.dmp

          memory/2736-9-0x00000000054C0000-0x00000000054D0000-memory.dmp

          memory/2736-8-0x0000000006070000-0x0000000006616000-memory.dmp

          memory/2736-3-0x00000000054C0000-0x00000000054D0000-memory.dmp

          memory/2736-0-0x00000000054C0000-0x00000000054D0000-memory.dmp

          memory/2736-7-0x00000000054D0000-0x000000000567C000-memory.dmp

          memory/2736-4-0x00000000057D0000-0x0000000005AC2000-memory.dmp

          memory/3012-112-0x0000000004280000-0x00000000042B6000-memory.dmp

          memory/3012-108-0x0000000004230000-0x0000000004280000-memory.dmp

          memory/3012-117-0x0000000004760000-0x0000000004835000-memory.dmp

          memory/3012-113-0x0000000004570000-0x0000000004602000-memory.dmp

          memory/3012-86-0x0000000003FB0000-0x0000000003FC8000-memory.dmp

          memory/3012-115-0x00000000041F0000-0x0000000004231000-memory.dmp

          memory/5156-131-0x000000001C560000-0x000000001C5A1000-memory.dmp

          memory/5156-125-0x0000000002200000-0x0000000002236000-memory.dmp

          memory/5156-128-0x000000001DC20000-0x000000001DDA8000-memory.dmp

          memory/5156-126-0x000000001C5F0000-0x000000001C67E000-memory.dmp

          memory/5156-127-0x000000001C830000-0x000000001C9DC000-memory.dmp

          memory/5156-124-0x0000000000020000-0x00000000000B8000-memory.dmp

          memory/5156-130-0x0000000002240000-0x0000000002258000-memory.dmp

          memory/5156-129-0x00000000021C0000-0x00000000021D8000-memory.dmp

          memory/5216-31-0x0000000004D80000-0x0000000004DAE000-memory.dmp

          memory/5216-35-0x0000000004DC0000-0x0000000004DCA000-memory.dmp

          memory/5216-43-0x00000000050A0000-0x000000000524C000-memory.dmp

          memory/5216-39-0x0000000004E60000-0x0000000004EEE000-memory.dmp