Analysis

  • user interaction
    yes
  • max time kernel
    599s
  • max time network
    514s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    08/08/2026, 00:00

General

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

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#.

  • 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
  • Disables Task Manager via registry modification
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Start PowerShell.

  • Drops file in Program Files directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 6 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 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Delays execution with timeout.exe 2 IoCs
  • Kills process with taskkill 2 IoCs
  • Modifies registry class 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 35 IoCs
  • Suspicious use of AdjustPrivilegeToken 41 IoCs
  • Suspicious use of WriteProcessMemory 16 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client.exe
    "C:\Users\Admin\AppData\Local\Temp\Client.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3788
    • 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:5012
      • 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:2608
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c start /b powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\uqfl1ira.cqr.exe"' & exit
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:4524
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\uqfl1ira.cqr.exe"'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2336
        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\uqfl1ira.cqr.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\uqfl1ira.cqr.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:2500
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c start /b powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\p4swkqu4.2mv.exe"' & exit
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:1044
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\p4swkqu4.2mv.exe"'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:5072
        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\p4swkqu4.2mv.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\p4swkqu4.2mv.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Enumerates connected drives
          • Drops file in Program Files directory
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4316
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /k taskkill /f /im explorer.exe && exit
            5⤵
            • Executes a command shell one-liner
            • Suspicious use of WriteProcessMemory
            PID:4592
            • C:\Windows\system32\taskkill.exe
              taskkill /f /im explorer.exe
              6⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:5056
    • 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:3824
      • C:\Windows\system32\schtasks.exe
        schtASks /deLeTe /F /Tn "Microsoft Paint"
        3⤵
          PID:1900
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA66E.tmp.bat""
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:3052
        • C:\Windows\system32\timeout.exe
          timeout 5
          3⤵
          • Delays execution with timeout.exe
          PID:5008
        • C:\Windows\system32\taskkill.exe
          taskkill /im Discord.exe /f
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:3236
        • C:\Windows\system32\timeout.exe
          timeout 3
          3⤵
          • Delays execution with timeout.exe
          PID:3504
    • C:\Windows\system32\wbem\WmiApSrv.exe
      C:\Windows\system32\wbem\WmiApSrv.exe
      1⤵
        PID:1032
      • C:\Windows\system32\AUDIODG.EXE
        C:\Windows\system32\AUDIODG.EXE 0x310 0x4b4
        1⤵
          PID:4852

        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

              death.mp4

              • Path C:\Program Files\Temp\death.mp4
              • Size 490KB
              • SHA256 eb0710fc75c7f6ad85879abc03283ab5eebbfd77681fd76eda7cd9ee581d45a2
              • MD5 SHA1 SHA512 SSDEEP TLSH

              powershell.exe.log

              • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
              • Size 2KB
              • SHA256 ca494d00a7aba63fc4cf7c49316bccee057616a26b917f9f12692b36b1f1dd91
              • MD5 SHA1 SHA512 TLSH

              CurrentDatabase_400.wmdb

              • Path C:\Users\Admin\AppData\Local\Microsoft\Media Player\CurrentDatabase_400.wmdb
              • Size 64KB
              • SHA256 05d47b87b577841cc40db176ea634ec49b0b97066e192e1d48d84bb977e696b6
              • MD5 SHA1 SHA512 SSDEEP TLSH

              WMSDKNS.XML.bak

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows Media\12.0\WMSDKNS.XML.bak
              • Size 9KB
              • SHA256 cb87767c4a384c24e4a0f88455f59101b1ae7b4fb8de8a5adb4136c5f7ee545b
              • MD5 SHA1 SHA512 SSDEEP TLSH

              StartupProfileData-NonInteractive

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 64B
              • SHA256 0e43492ead4e2fb9f5473d3d770f18d0e966692a6e2d193ce70e948fda2c273e
              • MD5 SHA1 SHA512

              __PSScriptPolicyTest_k4j5abvn.k41.ps1

              • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_k4j5abvn.k41.ps1
              • Size 60B
              • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
              • MD5 SHA1 SHA512 TLSH

              tmpA66E.tmp.bat

              • Path C:\Users\Admin\AppData\Local\Temp\tmpA66E.tmp.bat
              • Size 192B
              • SHA256 9f0a95c9891c0e6f19344554e10702a6c74e1ee641801b64c2dd77e33786a2d0
              • MD5 SHA1 SHA512 TLSH

              p4swkqu4.2mv.exe

              • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\p4swkqu4.2mv.exe
              • Size 1.9MB
              • SHA256 d7b89543b37b47d01424dfe933306e21bf9b733deee77f5e898c25506bfb4baa
              • MD5 SHA1 SHA512 SSDEEP TLSH

              uqfl1ira.cqr.exe

              • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\uqfl1ira.cqr.exe
              • Size 1.7MB
              • SHA256 5ae0f54692c8f1a65cd809e2ca81a8bdd204df08281d87b8ba70f7793aa9129d
              • MD5 SHA1 SHA512 SSDEEP TLSH

              memory/2336-1169-0x0000014A536A0000-0x0000014A536C2000-memory.dmp

              memory/2500-1174-0x0000000000A50000-0x0000000000BFE000-memory.dmp

              memory/2500-1175-0x0000000005C50000-0x00000000061F4000-memory.dmp

              memory/2500-1176-0x00000000055C0000-0x0000000005652000-memory.dmp

              memory/2500-1177-0x0000000005680000-0x000000000568A000-memory.dmp

              memory/3788-1154-0x0000000002430000-0x000000000244E000-memory.dmp

              memory/3788-0-0x0000000000220000-0x00000000002B2000-memory.dmp

              memory/3788-1141-0x00000000023B0000-0x00000000023BC000-memory.dmp

              memory/3788-1140-0x000000001BB80000-0x000000001BBF6000-memory.dmp

              memory/3788-131-0x0000000002360000-0x0000000002370000-memory.dmp

              memory/3788-32-0x0000000002360000-0x0000000002370000-memory.dmp

              memory/4316-1703-0x0000022601060000-0x000002260124C000-memory.dmp

              memory/4316-1708-0x000002261B630000-0x000002261B644000-memory.dmp

              memory/4316-1710-0x000002261B920000-0x000002261B978000-memory.dmp