General

  • Target

    r6_external.exe

  • Size

    3.7MB

  • Sample

    241010-p58hwswfma

  • MD5

    6b81f9f9d69045ba2ebb229dfcd42554

  • SHA1

    d3ec868616014de922e1e8fa77f0fd9e19e72f3c

  • SHA256

    7261d4b797dbbf5cb8c015beb343ef7f95f1183553d34d11b5a620ee34c80ddc

  • SHA512

    c618541f8534d60522c1ead509e2682d511bf749a4221db4b4383da294d8fa807f334c30f4a8b66171a2345381067e5cdb3b79eb72823bb78842b611aa96cc63

  • SSDEEP

    98304:TXJFZkiG8LhDN7S8bPDUUNiAcN+KK09tpC/Ms:TZFSEB7S8bbUUEK0k/

Malware Config

Extracted

Family

stealc

Botnet

game

C2

http://193.233.112.44

Attributes
  • url_path

    /383ccd496f3c5eee.php

Targets

    • Target

      r6_external.exe

    • Size

      3.7MB

    • MD5

      6b81f9f9d69045ba2ebb229dfcd42554

    • SHA1

      d3ec868616014de922e1e8fa77f0fd9e19e72f3c

    • SHA256

      7261d4b797dbbf5cb8c015beb343ef7f95f1183553d34d11b5a620ee34c80ddc

    • SHA512

      c618541f8534d60522c1ead509e2682d511bf749a4221db4b4383da294d8fa807f334c30f4a8b66171a2345381067e5cdb3b79eb72823bb78842b611aa96cc63

    • SSDEEP

      98304:TXJFZkiG8LhDN7S8bPDUUNiAcN+KK09tpC/Ms:TZFSEB7S8bbUUEK0k/

    • Stealc

      Stealc is an infostealer written in C++.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Downloads MZ/PE file

    • Checks BIOS information in registry

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

    • 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 web browsers

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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

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

    • Checks whether UAC is enabled

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks