Analysis

  • max time kernel
    107s
  • max time network
    125s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    27/10/2021, 08:46

General

  • Target
    53bfee8d592a8c675ecc28ef405ba9c4.dll
  • Size 747KB
  • Sample211027-kpavgabbb8
  • SHA256 34221289c366adef3e7c3f9605b0a1ddedbdcdf64ec3b893671775c14997f6b4
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • dridex

Botnet
  • 10444

C2
  • 192.46.210.220:443

  • 143.244.140.214:808

  • 45.77.0.96:6891

  • 185.56.219.47:8116

rc4.plain
rc4.plain

Signatures

  • Dridex

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

  • Blocklisted process makes network request 1 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\53bfee8d592a8c675ecc28ef405ba9c4.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4384
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\53bfee8d592a8c675ecc28ef405ba9c4.dll,#1
      2⤵
      • Blocklisted process makes network request
      • Checks whether UAC is enabled
      PID:4400

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/4400-116-0x0000000073850000-0x000000007391C000-memory.dmp

        memory/4400-117-0x0000000073850000-0x000000007388D000-memory.dmp

        memory/4400-118-0x0000000073850000-0x000000007391C000-memory.dmp

        memory/4400-121-0x0000000000960000-0x0000000000961000-memory.dmp

        memory/4400-120-0x0000000000140000-0x0000000000141000-memory.dmp

        memory/4400-122-0x0000000000140000-0x0000000000141000-memory.dmp

        memory/4400-123-0x0000000000140000-0x0000000000141000-memory.dmp