Analysis

  • max time kernel
    149s
  • 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 15:42

General

  • Target

    $PLUGINSDIR/yhjjbtf.dll

  • Size

    33KB

  • MD5

    2109a0431e1e8fbce8007bc6dbdc8d2d

  • SHA1

    f85d1cfa01ca893063af01510115bc279da84c2a

  • SHA256

    520857c7a5bfaeebf0f39504ae85d32b7e153774e93cb2be486f9a5d35b76d05

  • SHA512

    a190901c467b65b18370aa3dbec9bb994294042fb78965b6baaf92a31fdc316912679a23f81f76a0d30f51c9c9ccbabcd58b0d420a1c6060508de1f0c0d320fb

  • SSDEEP

    384:173rOmBpuRkCafMEILJBJn0GMZEhE7flHeKCB5qktAX6KiAEHpMUK6rbT7:171YiCeIdBMZT7f5eL5XfLzMUKcbX

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\yhjjbtf.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2816
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\yhjjbtf.dll,#1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2448
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\yhjjbtf.dll,#1
        3⤵
          PID:4900
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2448 -s 740
          3⤵
          • Program crash
          PID:4416
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2448 -ip 2448
      1⤵
        PID:2376

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

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      Downloads

      • memory/2448-0-0x0000000010000000-0x000000001000B000-memory.dmp

        Filesize

        44KB