Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    05/09/2026, 15:15

General

  • Target
    $PLUGINSDIR/ExecDos.dll
  • Size 5KB
  • Sample260905-sm3fpstyfw
  • SHA256 720be35cd1b4a333264713dc146b4ad024f3a7ad0644c2d8c6fcedd3c30e8a1f
  • 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\ExecDos.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4532
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\ExecDos.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1248
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1248 -s 600
        3⤵
        • Program crash
        PID:4396
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1248 -ip 1248
    1⤵
      PID:696

    Network

          MITRE ATT&CK Enterprise v16

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          Downloads