Analysis

  • max time kernel
    151s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220722-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220722-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-07-2022 05:10

General

  • Target

    fb5djyes.dll

  • Size

    476KB

  • MD5

    0e078fcb83f7689e0a613d1e1f98592d

  • SHA1

    02c9122c00abce3664344232be0d821647f5438d

  • SHA256

    4cf90ed4044d8025261e4740f1b9a98ed5d2c63d9bd9758257bf0881b2e28aca

  • SHA512

    e9ac5a2955c040120b0c2eaa4326226ebd4699e252bf69899faf366d2ac760c816888c91bb5bef6e5520736645d5f923f1c037c82cf90e981313c911a9ac81be

Malware Config

Extracted

Family

dridex

Botnet

10444

C2

23.246.204.126:443

151.106.39.36:8116

103.124.144.123:6891

172.105.78.60:4664

rc4.plain
rc4.plain

Signatures

  • Dridex

    Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.

  • Dridex Loader 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\fb5djyes.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4876
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\fb5djyes.dll,#1
      2⤵
        PID:4964
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4964 -s 704
          3⤵
          • Program crash
          PID:2448
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4964 -ip 4964
      1⤵
        PID:4224

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/4964-132-0x0000000000000000-mapping.dmp
      • memory/4964-133-0x0000000074CA0000-0x0000000074D19000-memory.dmp
        Filesize

        484KB

      • memory/4964-135-0x00000000005C0000-0x00000000005C6000-memory.dmp
        Filesize

        24KB