Analysis

  • max time kernel
    178s
  • max time network
    187s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    11-06-2022 16:59

General

  • Target

    s7yzrmv13.dll

  • Size

    476KB

  • MD5

    b9df50a14d692e7aac5cf697462379f0

  • SHA1

    0ac013a74fa5f75313774fb1c5294a4e0b9a3a75

  • SHA256

    0e16f533d18ae86ab8cadc43a44e9ff7fd6586658939b6c60d6ed9201c31f33a

  • SHA512

    eeb54214a759e8daef83d0197495b6985db5f37a5a6d8ba3ab941157ded0c149eb6ae3ee930fe7ec5fd22aaee009d0a33c419a9557d4db53c1077c10cb070a9b

Malware Config

Extracted

Family

dridex

Botnet

10444

C2

23.246.204.126:443

151.106.39.36:8116

103.124.144.123:6891

172.105.78.60:4664

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\s7yzrmv13.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1576
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\s7yzrmv13.dll,#1
      2⤵
        PID:2880
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2880 -s 700
          3⤵
          • Program crash
          PID:1080
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2880 -ip 2880
      1⤵
        PID:1968

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/2880-130-0x0000000000000000-mapping.dmp
      • memory/2880-131-0x0000000075710000-0x0000000075789000-memory.dmp
        Filesize

        484KB

      • memory/2880-133-0x0000000000E30000-0x0000000000E36000-memory.dmp
        Filesize

        24KB