Analysis

  • max time kernel
    18s
  • max time network
    116s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    11-06-2021 03:16

General

  • Target

    fa7c61ed88bc0a8e0e4db95b1d20b62d4dec0563fe4d1a40d3499a23aacf39cb.dll

  • Size

    174KB

  • MD5

    5c7ac084d3c0c3845284cb6396656094

  • SHA1

    a3293b47b36f3c9317251c2fd612cd494eb6538c

  • SHA256

    fa7c61ed88bc0a8e0e4db95b1d20b62d4dec0563fe4d1a40d3499a23aacf39cb

  • SHA512

    f88a2e8792da94f5db98d551c6583781f0acc15c90a8bec2c4f2c2aa40b89df83d92276eb6213f054206874a826d4a05a79a8c508f328e0215242813189f33d9

Malware Config

Extracted

Family

dridex

Botnet

22201

C2

178.128.220.64:30333

45.79.91.89:9987

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 behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\fa7c61ed88bc0a8e0e4db95b1d20b62d4dec0563fe4d1a40d3499a23aacf39cb.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4444
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\fa7c61ed88bc0a8e0e4db95b1d20b62d4dec0563fe4d1a40d3499a23aacf39cb.dll,#1
      2⤵
        PID:4456
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4456 -s 644
          3⤵
          • Program crash
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4016

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

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    Downloads

    • memory/4456-114-0x0000000000000000-mapping.dmp
    • memory/4456-115-0x0000000074290000-0x00000000742C0000-memory.dmp
      Filesize

      192KB

    • memory/4456-117-0x0000000000D40000-0x0000000000D46000-memory.dmp
      Filesize

      24KB