Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-03-2024 23:04

General

  • Target

    bf31164a5deaee1cac41ac616c681fff.dll

  • Size

    184KB

  • MD5

    bf31164a5deaee1cac41ac616c681fff

  • SHA1

    8a1834ea5caf714f8a908e365cf64ba6f28fad95

  • SHA256

    31a1e7f5ea357885fd7c9e624ead84802c3e6cc06b4b68dcf68e03ed4f308f6a

  • SHA512

    e09591fd5efce81bf9a564e7b17bccb0d4a4cbdd4e8d9fa1cc7dd3deb616c337948b11f7ff57b7fd632c32ef94a13471adbec1bc4aad6354fb864e9f42e02627

  • SSDEEP

    3072:Xb51A6VG71Eq55xw1jgDlO1poE2rm4coM+cxJdfhRlmg5e:Xb7tghEq3xw1j4kpP2rmLffxvfhRlme

Malware Config

Extracted

Family

dridex

Botnet

22203

C2

103.75.201.2:443

158.223.1.108:6225

165.22.28.242:4664

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\bf31164a5deaee1cac41ac616c681fff.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1184
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\bf31164a5deaee1cac41ac616c681fff.dll,#1
      2⤵
        PID:3516
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3516 -s 540
          3⤵
          • Program crash
          PID:452
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3516 -ip 3516
      1⤵
        PID:2392

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/3516-0-0x00000000753F0000-0x0000000075420000-memory.dmp
        Filesize

        192KB

      • memory/3516-1-0x00000000007F0000-0x00000000007F6000-memory.dmp
        Filesize

        24KB

      • memory/3516-2-0x00000000753F0000-0x0000000075420000-memory.dmp
        Filesize

        192KB