General

  • Target
    03a0f1b34e5688e65e394ac4e242b5e287817afd351d973bcb495d533166568e.zip
  • Size 7.0MB
  • Sample240615-nb6a1aybph
  • SHA256 03a0f1b34e5688e65e394ac4e242b5e287817afd351d973bcb495d533166568e
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • stealc

rc4.plain

Extracted

Family
  • amadey

Version
  • 4.30

Botnet
  • ffb1b9

C2
  • http://proresupdate.com

Attributes
  • install_dir

    4bbb72a446

  • install_file

    Hkbsse.exe

  • strings_key

    1ebbd218121948a356341fff55521237

  • url_paths

    /h9fmdW5/index.php

rc4.plain

Targets

    • Target
      Setup (6).exe
    • Size 689.0MB
    • SHA256 2ccd9c21535699c0bfe986739ad48e88b2c4b51b9f571dcad6214742adf48d23
    • MD5 SHA1 SHA512 SSDEEP
    • Amadey

      Amadey bot is a simple trojan bot primarily used for collecting reconnaissance information.

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner payload

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

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

    • Reads user/profile data of web browsers

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

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks