Analysis

  • max time kernel
    143s
  • max time network
    158s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    20/12/2021, 17:13

General

  • Target
    a6d88fcc61ecbdc52470006b5a9afca3.dll
  • Size 512KB
  • Sample211220-vreasabcf8
  • SHA256 f0f8c65ff33028fffaa1b7e9e18dacd896e0b0e8a9fa6e234c719b030b9741ac
  • MD5 SHA1 SHA512

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 behavior: EnumeratesProcesses 12 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\a6d88fcc61ecbdc52470006b5a9afca3.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3728
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\a6d88fcc61ecbdc52470006b5a9afca3.dll,#1
      2⤵
        PID:3980
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3980 -s 684
          3⤵
          • Program crash
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1148

    Network

          MITRE ATT&CK Matrix

          Replay Monitor

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          Downloads

          memory/3980-118-0x00000000739E0000-0x0000000073A61000-memory.dmp

          memory/3980-120-0x00000000001F0000-0x00000000001F6000-memory.dmp