General

  • Target

    https://cdn.discordapp.com/attachments/1255657489744138303/1256354654938337421/NightSchoolBeta.rar?ex=668319f3&is=6681c873&hm=4630951fe40c6485b6756c7109464fea83f19ee22d0a6e419bfdcdc912105476&

  • Sample

    240630-14ed7szhqm

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

https://4.233.218.3/api/kysc/psscript

Targets

    • Target

      https://cdn.discordapp.com/attachments/1255657489744138303/1256354654938337421/NightSchoolBeta.rar?ex=668319f3&is=6681c873&hm=4630951fe40c6485b6756c7109464fea83f19ee22d0a6e419bfdcdc912105476&

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Powershell Invoke Web Request.

    • Downloads MZ/PE file

    • Drops startup file

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • 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.

    • Checks installed software on the system

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

    • An obfuscated cmd.exe command-line is typically used to evade detection.

MITRE ATT&CK Enterprise v15

Tasks