General

  • Target

    af9cfa4d63479d3dda1bc2b1591971579df760524876dc3e82c816bf77e49b4b

  • Size

    1.7MB

  • Sample

    240705-gmr47atdnl

  • MD5

    f4c0d3ce31c946168ec1f4189453a81d

  • SHA1

    a30346531291f26a4933a00fdf6f8de90704b98d

  • SHA256

    af9cfa4d63479d3dda1bc2b1591971579df760524876dc3e82c816bf77e49b4b

  • SHA512

    63ece1c12dc1ca83cf2a0d10dad3d403f5e8c983f475271edc5a975901b18b287696071167e969cd41c5d4485b3b1841b4583bd4326289c1e855932eef87a16c

  • SSDEEP

    24576:UBqWKKYMPEVRYzMPkYHXANYksiZArxliP4OTomFu5Xxth9:UyM8VR8W5aYRi2lpYu5XxZ

Malware Config

Extracted

Family

vidar

C2

https://t.me/bu77un

https://steamcommunity.com/profiles/76561199730044335

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.1) Gecko/20100101 Firefox/128.1

Targets

    • Target

      af9cfa4d63479d3dda1bc2b1591971579df760524876dc3e82c816bf77e49b4b

    • Size

      1.7MB

    • MD5

      f4c0d3ce31c946168ec1f4189453a81d

    • SHA1

      a30346531291f26a4933a00fdf6f8de90704b98d

    • SHA256

      af9cfa4d63479d3dda1bc2b1591971579df760524876dc3e82c816bf77e49b4b

    • SHA512

      63ece1c12dc1ca83cf2a0d10dad3d403f5e8c983f475271edc5a975901b18b287696071167e969cd41c5d4485b3b1841b4583bd4326289c1e855932eef87a16c

    • SSDEEP

      24576:UBqWKKYMPEVRYzMPkYHXANYksiZArxliP4OTomFu5Xxth9:UyM8VR8W5aYRi2lpYu5XxZ

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • 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.

    • 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.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks