Analysis

  • max time kernel
    113s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    11-06-2022 16:51

General

  • Target

    oithak.dll

  • Size

    476KB

  • MD5

    b0105f4cb8deb73bf813d0881781c2a9

  • SHA1

    3781d4a2fd04cfe91f063d064a46d14d9b2150c2

  • SHA256

    47ccaacdb3f46f8578825f19d50b5d93d8a0dc57f114fc329ee41c8a6f15b88a

  • SHA512

    3605c8e0782a5e841d9b2b1938fcbba2a226830eff86ef3d653c2f2a26a46763c1f8acb595d279164916feaf92e83695a7fa3658e4a0bc2e6717906ba2783eb5

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\oithak.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2380
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\oithak.dll,#1
      2⤵
        PID:540
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 540 -s 708
          3⤵
          • Program crash
          PID:740
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 540 -ip 540
      1⤵
        PID:5020

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/540-130-0x0000000000000000-mapping.dmp
      • memory/540-131-0x00000000753F0000-0x0000000075469000-memory.dmp
        Filesize

        484KB

      • memory/540-133-0x0000000000C30000-0x0000000000C36000-memory.dmp
        Filesize

        24KB