Analysis

  • max time kernel
    34s
  • max time network
    91s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    24/02/2021, 15:06

General

  • Target
    a0225dabdd8d4d5c703fda4e422da2e2ee7632671bd6a66855232c26c6f2325a.dll
  • Size 188KB
  • Sample210224-fa2nrff6c2
  • SHA256 a0225dabdd8d4d5c703fda4e422da2e2ee7632671bd6a66855232c26c6f2325a
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • dridex

Botnet
  • 111

C2
  • 209.151.236.42:443

  • 91.121.94.86:8172

  • 5.189.144.136:6516

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 7 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\a0225dabdd8d4d5c703fda4e422da2e2ee7632671bd6a66855232c26c6f2325a.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1740
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\a0225dabdd8d4d5c703fda4e422da2e2ee7632671bd6a66855232c26c6f2325a.dll,#1
      2⤵
      • Blocklisted process makes network request
      • Checks whether UAC is enabled
      PID:2024

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1692-8-0x000007FEF63D0000-0x000007FEF664A000-memory.dmp

        memory/2024-3-0x00000000766F1000-0x00000000766F3000-memory.dmp

        memory/2024-4-0x0000000074AF0000-0x0000000074C93000-memory.dmp

        memory/2024-5-0x0000000074E60000-0x0000000074E91000-memory.dmp

        memory/2024-6-0x0000000000330000-0x0000000000336000-memory.dmp

        memory/2024-7-0x0000000074E60000-0x0000000074E7F000-memory.dmp