Analysis

  • max time kernel
    898s
  • max time network
    376s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    31/08/2026, 16:55

General

  • Target
    $PLUGINSDIR/nsExec.dll
  • Size 6KB
  • Sample260831-vfl69adm2x
  • SHA256 5d9ceb1ce5f35aea5f9e5a0c0edeeec04dfefe0c77890c80c70e98209b58b962
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
3/10

Malware Config

Signatures

  • Program crash 1 IoCs
  • 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.

  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsExec.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4100
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsExec.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1560
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1560 -s 480
        3⤵
        • Program crash
        PID:1980
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1560 -ip 1560
    1⤵
      PID:576

    Network

          MITRE ATT&CK Enterprise v16

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          Downloads