Analysis

  • max time kernel
    115s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-03-2024 06:37

General

  • Target

    b1755081724f6e35bd47b8a290de75fe.dll

  • Size

    188KB

  • MD5

    b1755081724f6e35bd47b8a290de75fe

  • SHA1

    24880e229719f7e9dfddcc4579e8b87550d3cf51

  • SHA256

    f00edb8e5872b2f90108c119329e296f5c5bd5c22a3777ee5a332a97b9f76b2a

  • SHA512

    5251c4ffe383e70626be086a4f77f36b3e1cb54de51a2ef77fa20aa5bf16cd0bf64bea891622a3862e36b86e447108587020a8c66ca04ef84ff87b7c18ad54da

  • SSDEEP

    3072:NA8JmK7ATVfQeVqNFZa/9KzMXJ6jTFDlAwqWut5KZMzfeAAAojo:NzIqATVfQeV2FZalKq6jtGJWuTmd

Malware Config

Extracted

Family

dridex

Botnet

22201

C2

103.82.248.59:443

54.39.98.141:6602

103.109.247.8:10443

rc4.plain
rc4.plain

Signatures

  • Dridex

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

  • Dridex Loader 2 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\b1755081724f6e35bd47b8a290de75fe.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3888
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1755081724f6e35bd47b8a290de75fe.dll,#1
      2⤵
        PID:3040
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3040 -s 688
          3⤵
          • Program crash
          PID:1932
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3040 -ip 3040
      1⤵
        PID:1200
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4116 --field-trial-handle=3112,i,1786399861560734457,5606877702857066305,262144 --variations-seed-version /prefetch:8
        1⤵
          PID:3456

        Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/3040-0-0x0000000074AC0000-0x0000000074AF0000-memory.dmp

          Filesize

          192KB

        • memory/3040-1-0x00000000009B0000-0x00000000009B6000-memory.dmp

          Filesize

          24KB

        • memory/3040-2-0x0000000074AC0000-0x0000000074AF0000-memory.dmp

          Filesize

          192KB