Analysis

  • max time kernel
    94s
  • max time network
    114s
  • 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 10:02

General

  • Target

    b1d87acb845ef0293bc3a2ba55010cfa.dll

  • Size

    188KB

  • MD5

    b1d87acb845ef0293bc3a2ba55010cfa

  • SHA1

    5330cb3187b5ecdb279b2e470bc43bef8589907f

  • SHA256

    9fb11eee620499834bee46cebb8328d2efdbd48e933a66a9ba62a30cdb3613d9

  • SHA512

    75c09105fff672b81f14eb71939a52c3e2d85e932d06fa8c13dba892bd6b96e0d10c1b383e8732309194e28fd578c3675a7072f05febe57fe0549c179d2e7838

  • SSDEEP

    3072:lA8JmK7ATVfQeVqNFZa/9KzMXJ6jTFDlAwqWut5KZMzfeAAAouo: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\b1d87acb845ef0293bc3a2ba55010cfa.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4936
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1d87acb845ef0293bc3a2ba55010cfa.dll,#1
      2⤵
        PID:532
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 532 -s 688
          3⤵
          • Program crash
          PID:1576
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 532 -ip 532
      1⤵
        PID:3184

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/532-0-0x0000000074980000-0x00000000749B0000-memory.dmp

        Filesize

        192KB

      • memory/532-1-0x0000000001380000-0x0000000001386000-memory.dmp

        Filesize

        24KB

      • memory/532-2-0x0000000074980000-0x00000000749B0000-memory.dmp

        Filesize

        192KB