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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/05/2024, 05:15

General

  • Target

    zlib1.dll

  • Size

    105KB

  • MD5

    b8a9e91134e7c89440a0f95470d5e47b

  • SHA1

    3cbcee30fc0a7e9807931bc0dafceb627042bfc9

  • SHA256

    42967a768f341d9ce5174eb38a4d63754c3c41739e7d88f4e39cd7354c1fac71

  • SHA512

    e8583ea94b9d1321889359317e367abc88e90e96d0d9243258244a527ffa2b13ab97d0787693ca328960ceb934ea11eefd14abafd640a654473c26e420d2ec54

  • SSDEEP

    3072:Y15jVjUqf9CtXH/4UghkGTBfmJyqLEC9BRY:Yf81wpTB+Jyqb

Score
3/10

Malware Config

Signatures

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

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\zlib1.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3372
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\zlib1.dll,#1
      2⤵
        PID:2700
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 600
          3⤵
          • Program crash
          PID:368
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2700 -ip 2700
      1⤵
        PID:3440

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

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      Downloads

      • memory/2700-0-0x0000000062E80000-0x0000000062EA2000-memory.dmp

        Filesize

        136KB