General

  • Target

    http://blob:https://github.com/07b975ee-a1fc-4f07-a81f-65b5fb3ebcfe

  • Sample

    240823-k8lfbawbke

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/975244014364270683/FZnH_sfT1E7Axl_7pfCffp86xK6BWVM_UXXb74CN2p4kpHxH_6kuQsuzlglxNPVfnIm6

Targets

    • Target

      http://blob:https://github.com/07b975ee-a1fc-4f07-a81f-65b5fb3ebcfe

    • Mercurial Grabber Stealer

      Mercurial Grabber is an open source stealer targeting Chrome, Discord and some game clients as well as generic system information.

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Looks for VirtualBox Guest Additions in registry

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Downloads MZ/PE file

    • Event Triggered Execution: Image File Execution Options Injection

    • Looks for VMWare Tools registry key

    • 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.

    • 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 for any installed AV software in registry

    • Checks installed software on the system

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

    • 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.

    • Maps connected drives based on registry

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

    • Mark of the Web detected: This indicates that the page was originally saved or cloned.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

MITRE ATT&CK Enterprise v15

Tasks