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General

  • Target

    https://158.69.36.15/files/estrouvinhar.js

  • Sample

    241204-lrjqtsxkbl

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://3105.filemail.com/api/file/get?filekey=tZ0A8AkaCfHVyJQGBGtNyLc0256wc-f0oI-T-w6PIjdTYIYQJd8Mux_T_T5g9jEmfO3a&skipreg=true&pk_vid=e0109638c9bfb9571732531514b5ff7c

exe.dropper

https://3105.filemail.com/api/file/get?filekey=tZ0A8AkaCfHVyJQGBGtNyLc0256wc-f0oI-T-w6PIjdTYIYQJd8Mux_T_T5g9jEmfO3a&skipreg=true&pk_vid=e0109638c9bfb9571732531514b5ff7c

Targets

    • Target

      https://158.69.36.15/files/estrouvinhar.js

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • 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

    • Modifies system executable filetype association

    • 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

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Maps connected drives based on registry

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

    • Remote Services: SMB/Windows Admin Shares

      Adversaries may use Valid Accounts to interact with a remote network share using Server Message Block (SMB).

    • Enumerates processes with tasklist

MITRE ATT&CK Enterprise v15

Tasks