General

  • Target

    report.pdf.lnk

  • Size

    2KB

  • Sample

    241104-hs15qazjdl

  • MD5

    55954104c8a8dc66a41548f4eed8eeeb

  • SHA1

    16ccdc346e47c1a35f6bfb6ef2af307a17bdada2

  • SHA256

    8aaed2aa282a84b5ae31cc397c4602e2ec5b376370a19f3e8884d5333d699e34

  • SHA512

    c00917341d30c02f918ec0349903fbc4a91af3183240403b9e032730a6ad03b24c068f1a401c978fd426dc2a28f07aaab910e95b0e89b6abed9af25a17187b42

Malware Config

Extracted

Family

vidar

C2

https://t.me/asg7rd

https://steamcommunity.com/profiles/76561199794498376

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.6 Safari/605.1.15 Ddg/17.6

Targets

    • Target

      report.pdf.lnk

    • Size

      2KB

    • MD5

      55954104c8a8dc66a41548f4eed8eeeb

    • SHA1

      16ccdc346e47c1a35f6bfb6ef2af307a17bdada2

    • SHA256

      8aaed2aa282a84b5ae31cc397c4602e2ec5b376370a19f3e8884d5333d699e34

    • SHA512

      c00917341d30c02f918ec0349903fbc4a91af3183240403b9e032730a6ad03b24c068f1a401c978fd426dc2a28f07aaab910e95b0e89b6abed9af25a17187b42

    • Detect Vidar Stealer

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Vidar family

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Powershell Invoke Web Request.

    • Downloads MZ/PE file

    • 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.

    • 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.

    • Enumerates processes with tasklist

MITRE ATT&CK Enterprise v15

Tasks