Overview

overview

10

Static

static

10

SeroXenLauncher.exe

windows7-x64

10

SeroXenLauncher.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    SeroXenLauncher.bat
  • Size 409KB
  • Sample240702-bbh49atgrp
  • SHA256 5416eb9ce7028292f5810ab8acec85ab7cd55503bcdf097f3e2ce2a900577797
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
quasarumbralseroxenexecutionspywarestealertrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 3.1.5

Botnet

  • SeroXen

C2

  • 127.0.0.1:4782

  • browser-julia.gl.at.ply.gg:54488

Mutex

  • $Sxr-GV6wZsGZZMeZ3qfenc

Attributes
  • encryption_key

    KH74MFPau2OXY0OqPzU8

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Extracted

Family

  • umbral

C2

  • https://discord.com/api/webhooks/1257452635888423017/-MpHtN8_KQyb61HJqaai1yrkmHQG75b_w1I_FDSgXUCXHSAsskj1fAM-GezxYcBKnRgl

Targets

    • Target
      SeroXenLauncher.bat
    • Size 409KB
    • SHA256 5416eb9ce7028292f5810ab8acec85ab7cd55503bcdf097f3e2ce2a900577797
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    quasarumbralseroxenexecutionspywarestealertrojan

    • Detect Umbral payload

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Umbral

      Umbral stealer is an opensource moduler stealer written in C#.

      stealerumbral

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Drops file in Drivers directory

    • 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.

      spywarestealer

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks