Analysis

  • max time kernel
    135s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/05/2024, 01:57

General

  • Target
    $PLUGINSDIR/nsArray.dll
  • Size 6KB
  • Sample240522-cdkljagg25
  • SHA256 8f9bfeebfa3b070b116de61a63271b6c25af0dbb4bbfb4ae73e334d1f8517efd
  • MD5 SHA1 SHA512 SSDEEP
Score
7/10
upx

Malware Config

Signatures

  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsArray.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:920
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsArray.dll,#1
      2⤵
        PID:5060
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 5060 -s 600
          3⤵
          • Program crash
          PID:5000
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 5060 -ip 5060
      1⤵
        PID:1512

      Network

            MITRE ATT&CK Matrix

            Replay Monitor

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            Downloads

            memory/5060-0-0x00000000758D0000-0x00000000758DA000-memory.dmp

            memory/5060-1-0x00000000758D0000-0x00000000758DA000-memory.dmp