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 07:10

General

  • Target

    b1857bbd667f35f78bee9d30c3d6c7f0.dll

  • Size

    188KB

  • MD5

    b1857bbd667f35f78bee9d30c3d6c7f0

  • SHA1

    5ea6ec6833d5dc0462cd131583ee6a810a27bb37

  • SHA256

    d589944c699f94846f7115754349175d98fec7fd7d7726f4fb6cdd8793220224

  • SHA512

    c83025b2993d50cd0e74c3e1978aa98858143be7446f496cc8fab4680e6dabc6aa595e8b956f9567cc01cc6fc60fc524a480c3f4d5af22ac8d0b80c3fd528cf6

  • SSDEEP

    3072:FA8JmK7ATVfQeVqNFZa/9KzMXJ6jTFDlAwqWut5KZMzfeAAAo6o:FzIqATVfQeV2FZalKq6jtGJWuTmd

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 1 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\b1857bbd667f35f78bee9d30c3d6c7f0.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4160
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1857bbd667f35f78bee9d30c3d6c7f0.dll,#1
      2⤵
        PID:4368
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4368 -s 688
          3⤵
          • Program crash
          PID:1232
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4368 -ip 4368
      1⤵
        PID:1596

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/4368-0-0x0000000075130000-0x0000000075160000-memory.dmp

        Filesize

        192KB

      • memory/4368-1-0x0000000000F50000-0x0000000000F56000-memory.dmp

        Filesize

        24KB