General

  • Target

    https://www.youtube.com/redirect?event=backstage_event&redir_token=QUFFLUhqbmtaNk0tLXFIQVN5bEZqS2hIVDhWSzZYNndaUXxBQ3Jtc0trellndi1jQXU1bWRqanVGaGI0UzlLZmtKVjY1c2J2VGhJcmNqOVFENHVhUmFqazA1N3d2dm9sMWxEN2dVdVpTaURNOHFaM2pBX1V3QXg3aWxzWG1CZnNYYjhLQlhpODFKaEhDb09Zb1FadlpSR2k4RQ&q=https%3A%2F%2Fwww.mediafire.com%2Ffolder%2Friz7q8flckxeg%2FFiles

  • Sample

    250213-dzwrcsslhr

Malware Config

Extracted

Family

vidar

C2

https://t.me/sok33tn

https://steamcommunity.com/profiles/76561199824159981

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:136.0) Gecko/20100101 Firefox/136.0

Targets

    • Target

      https://www.youtube.com/redirect?event=backstage_event&redir_token=QUFFLUhqbmtaNk0tLXFIQVN5bEZqS2hIVDhWSzZYNndaUXxBQ3Jtc0trellndi1jQXU1bWRqanVGaGI0UzlLZmtKVjY1c2J2VGhJcmNqOVFENHVhUmFqazA1N3d2dm9sMWxEN2dVdVpTaURNOHFaM2pBX1V3QXg3aWxzWG1CZnNYYjhLQlhpODFKaEhDb09Zb1FadlpSR2k4RQ&q=https%3A%2F%2Fwww.mediafire.com%2Ffolder%2Friz7q8flckxeg%2FFiles

    • Detect Vidar Stealer

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Vidar family

    • Xmrig family

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner payload

    • Boot or Logon Autostart Execution: Active Setup

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

    • Command and Scripting Interpreter: PowerShell

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

    • Creates new service(s)

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Stops running service(s)

    • 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.

    • 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 data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of web browsers

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

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • Legitimate hosting services abused for malware hosting/C2

    • Power Settings

      powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.

    • Checks system information in the registry

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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v15

Tasks