Overview

overview

10

Static

static

5

2026-08-11...op.exe

windows10-2004-x64

10

2026-08-11...op.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    122s
  • max time network
    149s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    11/08/2026, 08:40

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General

  • Target
    2026-08-11_edd57731875346265b0969e2069dda69_elex_ramnit_stop.exe
  • Size 1.3MB
  • Sample260811-kk2gmazbme
  • SHA256 fa88ccfc2c8cccac39362628bad7774ea1de398ba1fe90e79f27e7b33c54fde7
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defense_evasiondiscoveryexecutionpersistence

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
    persistence
  • Disables RegEdit via registry modification 2 IoCs
    defense_evasion
  • Disables Task Manager via registry modification
    defense_evasion
  • Executes dropped EXE 3 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 23 IoCs

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

  • AutoIT Executable 4 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 13 IoCs
  • Drops file in Windows 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 4 IoCs

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

    execution
  • Program crash 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 12 IoCs

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

    discovery
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-08-11_edd57731875346265b0969e2069dda69_elex_ramnit_stop.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-11_edd57731875346265b0969e2069dda69_elex_ramnit_stop.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Disables RegEdit via registry modification
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in System32 directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4844
    • C:\Users\Admin\AppData\Local\Temp\2026-08-11_edd57731875346265b0969e2069dda69_elex_ramnit_stopmgr.exe
      C:\Users\Admin\AppData\Local\Temp\2026-08-11_edd57731875346265b0969e2069dda69_elex_ramnit_stopmgr.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:5848
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 5848 -s 340
        3⤵
        • Program crash
        PID:5940
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /C AT /delete /yes
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5628
      • C:\Windows\SysWOW64\at.exe
        AT /delete /yes
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3440
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /C AT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\svchost .exe
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1404
      • C:\Windows\SysWOW64\at.exe
        AT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\svchost .exe
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4552
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 5848 -ip 5848
    1⤵
      PID:3316
    • C:\Windows\explorer.exe
      Explorer.exe regsvr.exe
      1⤵
        PID:4292
      • C:\Windows\explorer.exe
        C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
        1⤵
        • Modifies registry class
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3020
        • C:\Windows\regsvr.exe
          "C:\Windows\regsvr.exe"
          2⤵
          • Modifies WinLogon for persistence
          • Disables RegEdit via registry modification
          • Executes dropped EXE
          • Adds Run key to start application
          • Drops file in System32 directory
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:5780
          • C:\Windows\regsvrmgr.exe
            C:\Windows\regsvrmgr.exe
            3⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:5332
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 5332 -s 344
              4⤵
              • Program crash
              PID:3584
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /C AT /delete /yes
            3⤵
            • Executes a command shell one-liner
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:2748
            • C:\Windows\SysWOW64\at.exe
              AT /delete /yes
              4⤵
              • System Location Discovery: System Language Discovery
              PID:2056
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /C AT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\svchost .exe
            3⤵
            • Executes a command shell one-liner
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:2988
            • C:\Windows\SysWOW64\at.exe
              AT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\svchost .exe
              4⤵
              • System Location Discovery: System Language Discovery
              PID:3332
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 5332 -ip 5332
        1⤵
          PID:5952

        Network

              MITRE ATT&CK Enterprise v16

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              Downloads

              80237EE4964FC9C409AAF55BF996A292_FB287BEB63DB9E8D59A799779773B97C
              • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\80237EE4964FC9C409AAF55BF996A292_FB287BEB63DB9E8D59A799779773B97C
              • Size 471B
              • SHA256 1953cf98e2f5ffb48cf521daf4cdee5d065ae3f0195b8fc54ae9c4dcc6a0f320
              • MD5 SHA1 SHA512 TLSH
              Submit Download

              80237EE4964FC9C409AAF55BF996A292_FB287BEB63DB9E8D59A799779773B97C
              • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\80237EE4964FC9C409AAF55BF996A292_FB287BEB63DB9E8D59A799779773B97C
              • Size 420B
              • SHA256 b1da64f74abdfb4b64da25aad62ea387aa9d2f144e295d8268b35157d106f2f7
              • MD5 SHA1 SHA512 TLSH
              Submit Download

              2026-08-11_edd57731875346265b0969e2069dda69_elex_ramnit_stopmgr.exe
              • Path C:\Users\Admin\AppData\Local\Temp\2026-08-11_edd57731875346265b0969e2069dda69_elex_ramnit_stopmgr.exe
              • Size 60KB
              • SHA256 33c4b715dc8b183dff9aac65cc42c7f2c70658580b8e3d449878251482a5d906
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              setup.ini
              • Path C:\Windows\SysWOW64\setup.ini
              • Size 96B
              • SHA256 69815d4932ddde240ce6b1353305d2fab58ca402e9c478452c8e37ce8a7b2ac9
              • MD5 SHA1 SHA512 TLSH
              Submit Download

              regsvr.exe
              • Path C:\Windows\regsvr.exe
              • Size 1.3MB
              • SHA256 fa88ccfc2c8cccac39362628bad7774ea1de398ba1fe90e79f27e7b33c54fde7
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              memory/4844-0-0x0000000000400000-0x00000000004CA000-memory.dmp
              Download

              memory/4844-5-0x0000000000467000-0x0000000000468000-memory.dmp
              Download

              memory/4844-26-0x0000000000400000-0x00000000004CA000-memory.dmp
              Download

              memory/5780-27-0x0000000000400000-0x00000000004CA000-memory.dmp
              Download