Analysis

  • max time kernel
    150s
  • max time network
    151s
  • 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 08:14

General

  • Target

    b1a3013cfc5071536af5b10a92d05e8e.dll

  • Size

    188KB

  • MD5

    b1a3013cfc5071536af5b10a92d05e8e

  • SHA1

    ec0d479fe5e46737b96894d65aa8cf0b210a3e13

  • SHA256

    ed2e3b863441c1df52fbd8221c443b28a513073572efccd1acaeaed56cac62c2

  • SHA512

    05c065e1ee6363aa3be4a7adca67210f0a2dbaf16a950b91d3a5896f30336ce41bd9aee491f1cc77cbd2209ac8588faeae59a6c1d7dfe9e2a738f1757a23e108

  • SSDEEP

    3072:FA8JmK7ATVfQeVqNFZa/9KzMXJ6jTFDlAwqWut5KZMzfeAAAo2o: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 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\b1a3013cfc5071536af5b10a92d05e8e.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1520
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1a3013cfc5071536af5b10a92d05e8e.dll,#1
      2⤵
        PID:3444
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3444 -s 664
          3⤵
          • Program crash
          PID:768
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 3444 -ip 3444
      1⤵
        PID:2856

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/3444-0-0x0000000074970000-0x00000000749A0000-memory.dmp

        Filesize

        192KB

      • memory/3444-1-0x0000000000BF0000-0x0000000000BF6000-memory.dmp

        Filesize

        24KB

      • memory/3444-2-0x0000000074970000-0x00000000749A0000-memory.dmp

        Filesize

        192KB