Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    20/01/2021, 15:20

General

  • Target
    bttxlf4.zip.dll
  • Size 747KB
  • Sample210120-7gd6cwsbyn
  • SHA256 791252fc4def3c4c3bdb270633ffc88c0e2cd8e8e8ba299825a83841a273e7dd
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • dridex

Botnet
  • 10444

C2
  • 194.225.58.214:443

  • 211.110.44.63:5353

  • 69.164.207.140:3388

  • 198.57.200.100:3786

rc4.plain
rc4.plain

Signatures

  • Dridex

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

  • Dridex Loader 3 IoCs

    Detects Dridex both x86 and x64 loader in memory.

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\bttxlf4.zip.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3584
    • C:\Windows\SysWOW64\regsvr32.exe
      /s C:\Users\Admin\AppData\Local\Temp\bttxlf4.zip.dll
      2⤵
        PID:1140

    Network

          MITRE ATT&CK Matrix

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/1140-3-0x0000000073C50000-0x0000000073C8D000-memory.dmp

          memory/1140-4-0x0000000073C50000-0x0000000073C8D000-memory.dmp

          memory/1140-5-0x0000000000980000-0x0000000000981000-memory.dmp

          memory/1140-6-0x0000000073C50000-0x0000000073C8D000-memory.dmp