Resubmissions

02/11/2024, 22:49

241102-2rvq4axlct

02/11/2024, 13:10

241102-qetsgsvgnr10

General

  • Target
    FastMath.dll
  • Size 806KB
  • Sample241102-qetsgsvgnr
  • SHA256 8c6c3f9b3fd8497322cd9e798790aa3485a44f9c5418bb4aa97b630a3fb8cead
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Language
  • hta

Source
URLs
  • hta.dropper

    https://detail-booking.com.br/cpa.html

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    http://paradisoprovisor1.hospedagemdesites.ws/cpa.pdf

Extracted

Language
  • ps1

Source
URLs
  • exe.dropper

    http://45.149.241.169:5336/ghsjfsgfjsyhsfhzgbdfbgzgfb/yugygfyjsbdfoesrjfzbhffbserhbwdewbrtsnbdjkfbrhjgvghvhgvhgvhgvHfgcNchgfcnhchgchgcnGfcngcgdcngchcngch/jhbhfbjadhghjvgfcxhhfcjtgvkhdfskjdkbzhdfhmzdkydbfvhzdfjgvhzvg/tfvjtcfgchgcgcHcgcftjcgtygvgFtrdcjfcgkhvGcjfcxhfcjgVK/chfgcx.exe

Extracted

Credentials
  • Protocol

    ftp

  • Host

    otstysyski.usite.pro

  • Port

    21

  • Username

    lotstysyski

  • Password

    ProGen

Extracted

Family
  • vidar

C2
  • https://t.me/asg7rd

  • https://steamcommunity.com/profiles/76561199794498376

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.6 Safari/605.1.15 Ddg/17.6

Extracted

Family
  • xworm

Version
  • 5.0

C2
  • products-profit.gl.at.ply.gg:36450

Mutex
  • 4s4X91Qf4LTgCiRy

Attributes
  • install_file

    USB.exe

aes.plain

Extracted

Family
  • amadey

Version
  • 4.42

Botnet
  • 9c9aa5

C2
  • http://185.215.113.43

Attributes
  • install_dir

    abc3bc1985

  • install_file

    skotes.exe

  • strings_key

    8a35cf2ea38c2817dba29a4b5b25dcf0

  • url_paths

    /Zu7JuNko/index.php

rc4.plain

Extracted

Family
  • asyncrat

Version
  • 0.5.7B

Botnet
  • (***_C.P.A_***)

C2
  • 127.0.0.1:6606

  • 127.0.0.1:7707

  • 127.0.0.1:8808

  • 127.0.0.1:3313

  • 127.0.0.1:9441

  • 127.0.0.1:9442

  • 127.0.0.1:2900

  • 45.40.96.97:6606

  • 45.40.96.97:7707

  • 45.40.96.97:8808

  • 45.40.96.97:3313

  • 45.40.96.97:9441

  • 45.40.96.97:9442

  • 45.40.96.97:2900

  • cdt2023.ddns.net:6606

  • cdt2023.ddns.net:7707

  • cdt2023.ddns.net:8808

  • cdt2023.ddns.net:3313

  • cdt2023.ddns.net:9441

  • cdt2023.ddns.net:9442

Mutex
  • AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Extracted

Family
  • stealc

Botnet
  • tale

C2
  • http://185.215.113.206

Attributes
  • url_path

    /6c4adf523b719729.php

Extracted

Family
  • quasar

Version
  • 1.3.0.0

Botnet
  • VTROY

C2
  • 31.13.224.12:61512

  • 31.13.224.13:61513

Mutex
  • QSR_MUTEX_4Q2rJqiVyC7hohzbjx

Attributes
  • encryption_key

    7Vp2dMCHrMjJthQ2Elyy

  • install_name

    downloads.exe

  • log_directory

    Logs

  • reconnect_delay

    5000

  • startup_key

    cssrse.exe

  • subdirectory

    downloadupdates

Targets

    • Target
      FastMath.dll
    • Size 806KB
    • SHA256 8c6c3f9b3fd8497322cd9e798790aa3485a44f9c5418bb4aa97b630a3fb8cead
    • MD5 SHA1 SHA512 SSDEEP
    • Amadey

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

    • Amadey family

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • Asyncrat family

    • Detect Vidar Stealer

    • Detect Xworm Payload

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Stealc

      Stealc is an infostealer written in C++.

    • Stealc family

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Vidar family

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Downloads MZ/PE file

    • Uses browser remote debugging

      Can be used control the browser and steal sensitive information such as credentials and session cookies.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook profiles

    • Checks installed software on the system

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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

MITRE ATT&CK Enterprise v15

Tasks