Analysis

  • max time kernel
    158s
  • max time network
    182s
  • 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 05:14

General

  • Target

    iMzLYIacjTSkkklgbtq.dll

  • Size

    512KB

  • MD5

    11d52c5c4588cc43842dca09a21f1eb6

  • SHA1

    599267f47c25f6eafa52ace80dfd9fad2aa798d8

  • SHA256

    947cfb6d949f9a30f0c66d2aaabb0ccbe4cd0acf735abebc0e929e49c9fe83eb

  • SHA512

    e0cb6461c44d70c9398ae9f93d079748de13dc9122f17084c3b1a02b7d8f901259d91cfca5bb1d750e8bed74db83859e829a283223b6471163c3634a2f06bba4

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\iMzLYIacjTSkkklgbtq.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4664
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\iMzLYIacjTSkkklgbtq.dll,#1
      2⤵
        PID:1488
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1488 -s 652
          3⤵
          • Program crash
          PID:5012
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 180 -p 1488 -ip 1488
      1⤵
        PID:1376

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/1488-130-0x0000000000000000-mapping.dmp
      • memory/1488-131-0x0000000000FC0000-0x0000000000FC6000-memory.dmp
        Filesize

        24KB

      • memory/1488-132-0x0000000074AA0000-0x0000000074B21000-memory.dmp
        Filesize

        516KB

      • memory/1488-134-0x0000000000FC0000-0x0000000000FC6000-memory.dmp
        Filesize

        24KB