Analysis

  • max time kernel
    59s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    28/09/2026, 18:59

General

  • Target
    SetupExitLag-5.23.1-x64.exe
  • Size 89.6MB
  • Sample260928-xnb3cssw4p
  • SHA256 75e57233fad2d8ccb201888c78d68f38defdc790fcba8ce1778fdc65838b5f67
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Drops file in System32 directory 16 IoCs
  • Drops file in Windows directory 4 IoCs
  • Executes dropped EXE 4 IoCs
  • Launches sc.exe 1 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Loads dropped DLL 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Inno Setup is an open-source installation builder for Windows applications. 2 IoCs

    Inno Setup installer

  • Modifies data under HKEY_USERS 41 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SetupExitLag-5.23.1-x64.exe
    "C:\Users\Admin\AppData\Local\Temp\SetupExitLag-5.23.1-x64.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4496
    • C:\Users\Admin\AppData\Local\Temp\is-KEQ56.tmp\SetupExitLag-5.23.1-x64.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-KEQ56.tmp\SetupExitLag-5.23.1-x64.tmp" /SL5="$400B2,92816135,849408,C:\Users\Admin\AppData\Local\Temp\SetupExitLag-5.23.1-x64.exe"
      2⤵
      • Drops file in Drivers directory
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4620
      • C:\Windows\SYSTEM32\sc.exe
        "sc.exe" query ExitLagPmService
        3⤵
        • Launches sc.exe
        PID:5224
      • C:\Users\Admin\AppData\Local\Temp\is-K8I8F.tmp\DriverCacheCleaner.exe
        "C:\Users\Admin\AppData\Local\Temp\is-K8I8F.tmp\DriverCacheCleaner.exe"
        3⤵
        • Executes dropped EXE
        PID:5968
      • C:\Users\Admin\AppData\Local\Temp\is-K8I8F.tmp\Nfsdk\nfregdrv.exe
        "C:\Users\Admin\AppData\Local\Temp\is-K8I8F.tmp\Nfsdk\nfregdrv.exe" nfextlag
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:3744
      • C:\Users\Admin\AppData\Local\Temp\is-K8I8F.tmp\WinpkFilter\lwf\win10\amd64\snetcfg.exe
        "C:\Users\Admin\AppData\Local\Temp\is-K8I8F.tmp\WinpkFilter\lwf\win10\amd64\snetcfg.exe" -v -l ndextlag_lwf.inf -c s -i nt_ndextlag
        3⤵
        • Drops file in Windows directory
        • Executes dropped EXE
        PID:4816
  • C:\Windows\system32\DrvInst.exe
    DrvInst.exe "4" "0" "C:\Users\Admin\AppData\Local\Temp\{ae04a4cc-8c42-974a-b4e7-31cfa36ff63a}\ndextlag_lwf.inf" "9" "4b07c2d07" "00000000000000E0" "WinSta0\Default" "0000000000000160" "208" "C:\Users\Admin\AppData\Local\Temp\is-K8I8F.tmp\WinpkFilter\lwf\win10\amd64"
    1⤵
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    PID:1048
  • C:\Windows\system32\drivers\nfextlag.sys
    system32\drivers\nfextlag.sys
    1⤵
      PID:3240

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          DriverCacheCleaner.exe

          • Path C:\Users\Admin\AppData\Local\Temp\is-K8I8F.tmp\DriverCacheCleaner.exe
          • Size 251KB
          • SHA256 046e9feb0d44b1972d6565103d12df23b6a23aecf77ab0b68d7461fad8ed7b12
          • MD5 SHA1 SHA512 SSDEEP TLSH

          nfextlag.sys

          • Path C:\Users\Admin\AppData\Local\Temp\is-K8I8F.tmp\Nfsdk\driver_x64\nfextlag.sys
          • Size 123KB
          • SHA256 1ec0364cdfb04fab4bbdbfc57854b739f906c165a336c670b26953775edf2c47
          • MD5 SHA1 SHA512 SSDEEP TLSH

          nfapi.dll

          • Path C:\Users\Admin\AppData\Local\Temp\is-K8I8F.tmp\Nfsdk\nfapi.dll
          • Size 578KB
          • SHA256 64f95a39842ad681e925a686944ab7b520edcea9cae51fb682f63de4210469fa
          • MD5 SHA1 SHA512 SSDEEP TLSH

          nfregdrv.exe

          • Path C:\Users\Admin\AppData\Local\Temp\is-K8I8F.tmp\Nfsdk\nfregdrv.exe
          • Size 54KB
          • SHA256 01cb2045adf3b276efbd7376c5acca6710841fa13a91677339265be146b2d4bb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ndextlag.cat

          • Path C:\Users\Admin\AppData\Local\Temp\is-K8I8F.tmp\WINPKF~1\lwf\win10\amd64\ndextlag.cat
          • Size 11KB
          • SHA256 476005d1e2be816c06cf62fa18715dd50d9a09bc7984d0ae33cf917288174917
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ndextlag.sys

          • Path C:\Users\Admin\AppData\Local\Temp\is-K8I8F.tmp\WINPKF~1\lwf\win10\amd64\ndextlag.sys
          • Size 58KB
          • SHA256 70013fcd32f4745347cbd45c1cc911c0d6939048727f1c8dbcc1da36edf20fa9
          • MD5 SHA1 SHA512 SSDEEP TLSH

          snetcfg.exe

          • Path C:\Users\Admin\AppData\Local\Temp\is-K8I8F.tmp\WinpkFilter\lwf\win10\amd64\snetcfg.exe
          • Size 15KB
          • SHA256 516c5643cf378bdbc28191db75f85aed6988f21fe176c6d198ec21e76540c944
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ndextlag_lwf.inf

          • Path C:\Users\Admin\AppData\Local\Temp\is-K8I8F.tmp\WinpkFilter\lwf\win7\i386\ndextlag_lwf.inf
          • Size 2KB
          • SHA256 b75793dc1c6665778a2371e2c5ee57052d61a94ce6163103fb3867b710f9b12a
          • MD5 SHA1 SHA512 TLSH

          SetupExitLag-5.23.1-x64.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\is-KEQ56.tmp\SetupExitLag-5.23.1-x64.tmp
          • Size 3.4MB
          • SHA256 17e35b385caeb170f3f49577a7090cdd91518941fe6b1daf0b1d471c9d58a171
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ndextlag_lwf.inf_amd64_17444b81168ee7c2.ini

          • Path C:\Windows\System32\DriverStore\FileRepository\ndextlag_lwf.inf_amd64_17444b81168ee7c2.ini
          • Size 428B
          • SHA256 9845d56a70bddd448f98e32594c0cb7dc03608bc7dfeef86478c76d9cd7cd532
          • MD5 SHA1 SHA512 TLSH

          memory/4496-8-0x0000000000E40000-0x0000000000F1F000-memory.dmp

          memory/4496-0-0x0000000000E40000-0x0000000000F1F000-memory.dmp

          memory/4620-10-0x0000000002F70000-0x0000000002F71000-memory.dmp

          memory/4620-57-0x0000000000EF0000-0x0000000001271000-memory.dmp

          memory/4620-36-0x0000000000EF0000-0x0000000001271000-memory.dmp

          memory/4620-14-0x0000000000EF0000-0x0000000001271000-memory.dmp

          memory/4620-12-0x0000000000EF0000-0x0000000001271000-memory.dmp

          memory/4620-9-0x0000000000EF0000-0x0000000001271000-memory.dmp

          memory/4620-6-0x0000000002F70000-0x0000000002F71000-memory.dmp