Analysis

  • max time kernel
    33s
  • max time network
    112s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    20/01/2021, 14:41

General

  • Target
    fa138b74e9f19e6d0efac8bdc3af8931.exe
  • Size 682KB
  • Sample210120-d1rg7bcsvn
  • SHA256 83ee84084d628a921bd29b547f6767e17d8cd89a6132f9d717d5ccab7da72fbd
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • azorult

C2
  • http://195.245.112.115/index.php

Signatures

  • Azorult

    An information stealer that was first discovered in 2016, targeting browsing history and passwords.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

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

  • JavaScript code in executable 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fa138b74e9f19e6d0efac8bdc3af8931.exe
    "C:\Users\Admin\AppData\Local\Temp\fa138b74e9f19e6d0efac8bdc3af8931.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3888
    • C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
      "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:4044

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/3888-8-0x0000000007610000-0x0000000007611000-memory.dmp

        memory/3888-11-0x00000000046B0000-0x00000000046B1000-memory.dmp

        memory/3888-12-0x0000000002521000-0x0000000002522000-memory.dmp

        memory/3888-10-0x0000000008090000-0x000000000809B000-memory.dmp

        memory/3888-9-0x0000000002520000-0x0000000002521000-memory.dmp

        memory/3888-2-0x0000000073A20000-0x000000007410E000-memory.dmp

        memory/3888-7-0x0000000004C00000-0x0000000004C01000-memory.dmp

        memory/3888-6-0x0000000004C20000-0x0000000004C3E000-memory.dmp

        memory/3888-5-0x0000000004C90000-0x0000000004C91000-memory.dmp

        memory/3888-3-0x0000000000390000-0x0000000000391000-memory.dmp

        memory/4044-13-0x0000000000400000-0x0000000000420000-memory.dmp

        memory/4044-16-0x0000000000400000-0x0000000000420000-memory.dmp