Analysis

  • max time kernel
    191s
  • max time network
    206s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220721-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-07-2022 05:06

General

  • Target

    byUxDGdVUTjYkkklgbtq.dll

  • Size

    512KB

  • MD5

    7223405e1c7c78d69d287dd2a50250ef

  • SHA1

    dd6423ed9bf92ce5dda658958a24bdf7b8fbc03f

  • SHA256

    93efd751aa87f9bb2dc22adcf47a72f6893a27c49fe074750454d4aacd13b94c

  • SHA512

    c1eee11fe8c03be1d5d116d636c7eb45c4535a54c62532784ce50590bbb866d52b5558b8843f98be756b0062758784adad583ee4de79196ddbb03efa68cf68a2

Malware Config

Extracted

Family

dridex

Botnet

22203

C2

51.159.52.196:443

134.209.247.135:6602

194.233.68.48:5228

89.31.56.58:593

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\byUxDGdVUTjYkkklgbtq.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2348
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\byUxDGdVUTjYkkklgbtq.dll,#1
      2⤵
        PID:3660
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3660 -s 652
          3⤵
          • Program crash
          PID:2412
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3660 -ip 3660
      1⤵
        PID:2224

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/3660-130-0x0000000000000000-mapping.dmp
      • memory/3660-131-0x00000000011D0000-0x00000000011D6000-memory.dmp
        Filesize

        24KB

      • memory/3660-132-0x0000000075680000-0x0000000075701000-memory.dmp
        Filesize

        516KB

      • memory/3660-134-0x00000000011D0000-0x00000000011D6000-memory.dmp
        Filesize

        24KB