Analysis

  • max time kernel
    26s
  • max time network
    137s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    27/01/2021, 05:51

General

  • Target
    ra8tqy1c.rar.dll
  • Size 706KB
  • Sample210127-pe7cea388j
  • SHA256 0d3efb50151fe9477b9ecb690fbec8692d74c191a200bf5751943ca0ea10e718
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • dridex

Botnet
  • 10444

C2
  • 97.107.127.161:443

  • 45.33.94.33:5037

  • 159.89.91.92:5037

  • 158.69.118.130:1443

rc4.plain
rc4.plain

Signatures

  • Dridex

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

  • Dridex Loader 2 IoCs

    Detects Dridex both x86 and x64 loader in memory.

  • Blocklisted process makes network request 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\ra8tqy1c.rar.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:496
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\ra8tqy1c.rar.dll,#1
      2⤵
      • Blocklisted process makes network request
      • Checks whether UAC is enabled
      PID:1336

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1336-3-0x00000000738F0000-0x000000007392D000-memory.dmp

        memory/1336-4-0x00000000738F0000-0x000000007392D000-memory.dmp

        memory/1336-5-0x0000000001300000-0x0000000001301000-memory.dmp