Analysis

  • max time kernel
    187s
  • max time network
    199s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    26-06-2022 06:00

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 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\s7yzrmv13.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1112
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\s7yzrmv13.dll,#1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:832
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 832 -s 700
        3⤵
        • Program crash
        PID:3988
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 832 -s 700
        3⤵
        • Program crash
        PID:3568
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 832 -ip 832
    1⤵
      PID:4384

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/832-130-0x0000000000000000-mapping.dmp

    • memory/832-131-0x0000000000C00000-0x0000000000C06000-memory.dmp

      Filesize

      24KB

    • memory/832-132-0x0000000075850000-0x00000000758C9000-memory.dmp

      Filesize

      484KB

    • memory/832-134-0x0000000000C00000-0x0000000000C06000-memory.dmp

      Filesize

      24KB

    • memory/3988-135-0x0000000000000000-mapping.dmp