Analysis

  • max time kernel
    175s
  • max time network
    187s
  • 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 05:12

General

  • Target

    HLYbnfSQpxkkklgbtq.dll

  • Size

    512KB

  • MD5

    cc810495ba0d64d3b6081d6006607bc2

  • SHA1

    1aee22f98f546977d0df7c36e8c583915d003a6c

  • SHA256

    176d3e38c6782bf313d6d5f23a14f2e7692181ee50a7b2a2b130caae82e46148

  • SHA512

    edbea012640ef80b2430946321e6a62ee5b907df7f28deb23a43b64f0b6833e3efbcb100ce1400fef2aa4d37881f0365962c0846171c2af92f2fccf17c4f2410

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\HLYbnfSQpxkkklgbtq.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4104
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\HLYbnfSQpxkkklgbtq.dll,#1
      2⤵
        PID:4908
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 664
          3⤵
          • Program crash
          PID:2140
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4908 -ip 4908
      1⤵
        PID:1120

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/4908-130-0x0000000000000000-mapping.dmp
      • memory/4908-131-0x0000000000730000-0x0000000000736000-memory.dmp
        Filesize

        24KB

      • memory/4908-132-0x0000000074A60000-0x0000000074AE1000-memory.dmp
        Filesize

        516KB

      • memory/4908-134-0x0000000000730000-0x0000000000736000-memory.dmp
        Filesize

        24KB