General

  • Target

    8b4cf282d61f5516a04765243cf6bf9f9500c32a6f8da4265f32ddb1edaad03e

  • Size

    717KB

  • Sample

    210722-6bm99yvkmj

  • MD5

    e367dafc93f51cea74227e408a54ccba

  • SHA1

    4398eb510465ccfd8d83b4f374d48a67a1c3aaa7

  • SHA256

    8b4cf282d61f5516a04765243cf6bf9f9500c32a6f8da4265f32ddb1edaad03e

  • SHA512

    b34fc77cbc5c67ca5c7e9d27165657c3d56ad7a7739935eafbfb371a9fc9cfd8e2d5a8600ddcc44c399355d3847fe9bfa3366507f2a82502c8dcf74c3ec41574

Malware Config

Extracted

Family

vidar

Version

39.6

Botnet

517

C2

https://sslamlssa1.tumblr.com/

Attributes
  • profile_id

    517

Targets

    • Target

      8b4cf282d61f5516a04765243cf6bf9f9500c32a6f8da4265f32ddb1edaad03e

    • Size

      717KB

    • MD5

      e367dafc93f51cea74227e408a54ccba

    • SHA1

      4398eb510465ccfd8d83b4f374d48a67a1c3aaa7

    • SHA256

      8b4cf282d61f5516a04765243cf6bf9f9500c32a6f8da4265f32ddb1edaad03e

    • SHA512

      b34fc77cbc5c67ca5c7e9d27165657c3d56ad7a7739935eafbfb371a9fc9cfd8e2d5a8600ddcc44c399355d3847fe9bfa3366507f2a82502c8dcf74c3ec41574

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Vidar Stealer

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

    • Reads user/profile data of web browsers

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

    • Accesses 2FA software files, possible credential harvesting

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks