Analysis

  • max time kernel
    61s
  • max time network
    139s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    24/02/2021, 15:04

General

  • Target
    26ce9d4e46fa16837bb1b225e09cb3f1f892d7c2e59a58662fc055e4c3ce34a4.dll
  • Size 188KB
  • Sample210224-1rvd1dtxyn
  • SHA256 26ce9d4e46fa16837bb1b225e09cb3f1f892d7c2e59a58662fc055e4c3ce34a4
  • 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 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\26ce9d4e46fa16837bb1b225e09cb3f1f892d7c2e59a58662fc055e4c3ce34a4.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4688
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\26ce9d4e46fa16837bb1b225e09cb3f1f892d7c2e59a58662fc055e4c3ce34a4.dll,#1
      2⤵
      • Blocklisted process makes network request
      • Checks whether UAC is enabled
      PID:4736

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/4736-3-0x0000000075A50000-0x0000000075A81000-memory.dmp

        memory/4736-4-0x0000000003640000-0x0000000003646000-memory.dmp

        memory/4736-5-0x0000000075A50000-0x0000000075A6F000-memory.dmp