Analysis

  • max time kernel
    142s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230621-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-06-2023 12:46

General

  • Target

    s7yzrmv13.dll

  • Size

    476KB

  • MD5

    b9df50a14d692e7aac5cf697462379f0

  • SHA1

    0ac013a74fa5f75313774fb1c5294a4e0b9a3a75

  • SHA256

    0e16f533d18ae86ab8cadc43a44e9ff7fd6586658939b6c60d6ed9201c31f33a

  • SHA512

    eeb54214a759e8daef83d0197495b6985db5f37a5a6d8ba3ab941157ded0c149eb6ae3ee930fe7ec5fd22aaee009d0a33c419a9557d4db53c1077c10cb070a9b

  • SSDEEP

    12288:e7fimEsIsmY4K08oM1Wd8t5KQhNdv5z2:e7aVRBn7x6jtU

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:5084
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\s7yzrmv13.dll,#1
      2⤵
        PID:1396
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1396 -s 700
          3⤵
          • Program crash
          PID:3076
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1396 -ip 1396
      1⤵
        PID:4216
      • C:\Windows\System32\svchost.exe
        C:\Windows\System32\svchost.exe -k netsvcs -p
        1⤵
          PID:2172

        Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1396-133-0x0000000075260000-0x00000000752D9000-memory.dmp
          Filesize

          484KB

        • memory/1396-134-0x00000000011A0000-0x00000000011A6000-memory.dmp
          Filesize

          24KB