Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/04/2024, 22:40

General

  • Target
    $PLUGINSDIR/zkyayjffrdi.dll
  • Size 31KB
  • Sample240401-2lr31shf89
  • SHA256 1fdc9ecfa8bddd5c3d7b77913cec4dba53263dac5b8f35cde40e920a58f2deca
  • MD5 SHA1 SHA512 SSDEEP
Score
3/10

Malware Config

Signatures

  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\zkyayjffrdi.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:848
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\zkyayjffrdi.dll,#1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2144
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\zkyayjffrdi.dll,#1
        3⤵
          PID:4460
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2144 -s 756
          3⤵
          • Program crash
          PID:2444
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2144 -ip 2144
      1⤵
        PID:4260

      Network

            MITRE ATT&CK Matrix

            Replay Monitor

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            Downloads

            memory/2144-0-0x0000000075430000-0x000000007543B000-memory.dmp

            memory/2144-1-0x0000000075430000-0x000000007543B000-memory.dmp