Overview

overview

10

Static

static

10

Client.exe

windows10-2004-x64

10

Client.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    599s
  • max time network
    554s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    08/08/2026, 00:00

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General

  • Target
    Client.exe
  • Size 558KB
  • Sample260808-aamwdadr8x
  • SHA256 3cbcd57932f4423eb93753cf1b97093d6856f16ae5a4af180048bb65fb696c84
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
adwaresheet_tcwjcmmwqyakvkdefense_evasionexecutionsheetratpersistenceransomwarespywaretrojan

Malware Config

Extracted

Family

  • sheetrat

Version

  • 2.7.1

Campaign

  • Sheet_tcwjcmmwqyakvk

C2

  • 91.92.47.228:1360

Signatures

  • Family: Sheetrat, NonEuclid rat

    Sheetrat aka NonEuclid RAT is a trojan written in C#.

    trojansheetrat
  • Detects Sheetrat obfuscated V1.8 and higher 2 IoCs

    Sheetrat aka NonEuclid RAT is a trojan written in C#.

  • Detects Sheetrat obfuscated version 2 IoCs
  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
    persistence
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence
  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 3 IoCs

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

    execution
  • Checks SCSI registry key(s) 3 TTPs 62 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 2 IoCs
    defense_evasion
  • Kills process with taskkill 1 IoCs
    defense_evasion
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies registry class 38 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 27 IoCs
  • Suspicious use of AdjustPrivilegeToken 34 IoCs
  • Suspicious use of FindShellTrayWindow 54 IoCs
  • Suspicious use of SendNotifyMessage 42 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy WMI provider

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

    ransomware
  • Uses Volume Shadow Copy service COM API

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

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client.exe
    "C:\Users\Admin\AppData\Local\Temp\Client.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4148
    • C:\Windows\SYSTEM32\CMD.exe
      "CMD" /C SchTaSKs /CrEAte /F /sc OnLoGoN /rl HighEst /tn "Microsoft Paint" /tr "C:\Program Files\Sub\Discord.exe" & exit
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:2684
      • C:\Windows\system32\schtasks.exe
        SchTaSKs /CrEAte /F /sc OnLoGoN /rl HighEst /tn "Microsoft Paint" /tr "C:\Program Files\Sub\Discord.exe"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:5296
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtASks /deLeTe /F /Tn "Microsoft Paint" & exit
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:5136
      • C:\Windows\system32\schtasks.exe
        schtASks /deLeTe /F /Tn "Microsoft Paint"
        3⤵
          PID:4920
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC710.tmp.bat""
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:3544
        • C:\Windows\system32\timeout.exe
          timeout 5
          3⤵
          • Delays execution with timeout.exe
          PID:5224
        • C:\Windows\system32\taskkill.exe
          taskkill /im Discord.exe /f
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:6024
        • C:\Windows\system32\timeout.exe
          timeout 3
          3⤵
          • Delays execution with timeout.exe
          PID:3548
    • C:\Windows\system32\wbem\WmiApSrv.exe
      C:\Windows\system32\wbem\WmiApSrv.exe
      1⤵
        PID:704
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k GPSvcGroup
        1⤵
          PID:5376
        • C:\Windows\system32\sihost.exe
          sihost.exe
          1⤵
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of WriteProcessMemory
          PID:1716
          • C:\Windows\explorer.exe
            explorer.exe /LOADSAVEDWINDOWS
            2⤵
            • Boot or Logon Autostart Execution: Active Setup
            • Enumerates connected drives
            • Checks SCSI registry key(s)
            • Modifies Internet Explorer settings
            • Modifies registry class
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            • Suspicious use of SetWindowsHookEx
            PID:4040
        • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
          "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
          1⤵
          • Modifies registry class
          • Suspicious use of SetWindowsHookEx
          PID:468
        • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
          "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
          1⤵
          • Modifies registry class
          • Suspicious use of SetWindowsHookEx
          PID:476

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              Discord.exe
              • Path C:\Program Files\Sub\Discord.exe
              • Size 558KB
              • SHA256 3cbcd57932f4423eb93753cf1b97093d6856f16ae5a4af180048bb65fb696c84
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              prep_Activatable Class_Hermes_perf.cache
              • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
              • Size 599B
              • SHA256 b536a3dae9ea5c69081f0491eed829e3b57e32401fdf49a63031bcd6b20e6fdb
              • MD5 SHA1 SHA512 TLSH
              Submit Download

              tmpC710.tmp.bat
              • Path C:\Users\Admin\AppData\Local\Temp\tmpC710.tmp.bat
              • Size 192B
              • SHA256 836a827745f1c1e5004197a02e3ac42cfbd17355ee6644e45acd19f3b141035d
              • MD5 SHA1 SHA512 TLSH
              Submit Download

              memory/468-2002-0x0000018F83A20000-0x0000018F83A40000-memory.dmp
              Download

              memory/468-2003-0x0000018F93E80000-0x0000018F93F80000-memory.dmp
              Download

              memory/468-2033-0x0000018F94240000-0x0000018F94260000-memory.dmp
              Download

              memory/468-1987-0x0000018F801E0000-0x0000018F802E0000-memory.dmp
              Download

              memory/468-2019-0x0000018F83E00000-0x0000018F83E20000-memory.dmp
              Download

              memory/4040-2176-0x000000000F190000-0x000000000F2FC000-memory.dmp
              Download

              memory/4040-2174-0x000000000F190000-0x000000000F2FC000-memory.dmp
              Download

              memory/4040-2173-0x000000000F190000-0x000000000F2FC000-memory.dmp
              Download

              memory/4040-2181-0x000000000F190000-0x000000000F2FC000-memory.dmp
              Download

              memory/4040-2189-0x000000000F190000-0x000000000F2FC000-memory.dmp
              Download

              memory/4148-5-0x00007FFDCD6E0000-0x00007FFDCE084000-memory.dmp
              Download

              memory/4148-1984-0x00007FFDCD6E0000-0x00007FFDCE084000-memory.dmp
              Download

              memory/4148-137-0x00007FFDCD6E0000-0x00007FFDCE084000-memory.dmp
              Download

              memory/4148-40-0x00007FFDCD6E0000-0x00007FFDCE084000-memory.dmp
              Download

              memory/4148-1-0x00000000008D0000-0x0000000000962000-memory.dmp
              Download

              memory/4148-4-0x00007FFDCD6E0000-0x00007FFDCE084000-memory.dmp
              Download

              memory/4148-3-0x00007FFDCD6E0000-0x00007FFDCE084000-memory.dmp
              Download

              memory/4148-2-0x00007FFDCD6E0000-0x00007FFDCE084000-memory.dmp
              Download

              memory/4148-0-0x00007FFDCD86F000-0x00007FFDCD870000-memory.dmp
              Download