Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-03-2024 22:06

General

  • Target

    b33765481c44033b5016331146e40022.dll

  • Size

    188KB

  • MD5

    b33765481c44033b5016331146e40022

  • SHA1

    33d03e60b7a4866a48b0ba3cd70018e43cfcf08f

  • SHA256

    d46ed3025a63aaea60d748935a64dd2d95533eaaf29a4ffd68ea0cc924e95055

  • SHA512

    936332d04e4dab044f9a14f4433adcadbe608778cbf054557638e53b50095c415158b16a0248266adf9996e4f295c377cb227527aee6455b4d35b28aed815a75

  • SSDEEP

    3072:lA8JmK7ATVfQeVqNFZa/9KzMXJ6jTFDlAwqWut5KZMzfeAAAojo:lzIqATVfQeV2FZalKq6jtGJWuTmd

Malware Config

Extracted

Family

dridex

Botnet

22201

C2

103.82.248.59:443

54.39.98.141:6602

103.109.247.8:10443

rc4.plain
rc4.plain

Signatures

  • Dridex

    Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.

  • Dridex Loader 2 IoCs

    Detects Dridex both x86 and x64 loader in memory.

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

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\b33765481c44033b5016331146e40022.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4216
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\b33765481c44033b5016331146e40022.dll,#1
      2⤵
        PID:3592
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3592 -s 688
          3⤵
          • Program crash
          PID:4412
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3592 -ip 3592
      1⤵
        PID:2488

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/3592-0-0x0000000000FF0000-0x0000000000FF6000-memory.dmp

        Filesize

        24KB

      • memory/3592-1-0x0000000075280000-0x00000000752B0000-memory.dmp

        Filesize

        192KB

      • memory/3592-2-0x0000000075280000-0x00000000752B0000-memory.dmp

        Filesize

        192KB

      • memory/3592-3-0x0000000000FF0000-0x0000000000FF6000-memory.dmp

        Filesize

        24KB