General

  • Target
    9fdc22cfd95d8a88d85f3b72791790b4.exe
  • Size 486KB
  • Sample210716-rbrmbec9h6
  • SHA256 4b1bb5b4ec520f876013a1607c28097c02c7e93d6a1e908af320d633d3d0a76b
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • vidar

Version
  • 39.6

Botnet
  • 903

C2
  • https://sslamlssa1.tumblr.com/

Attributes
  • profile_id

    903

Targets

    • Target
      9fdc22cfd95d8a88d85f3b72791790b4.exe
    • Size 486KB
    • SHA256 4b1bb5b4ec520f876013a1607c28097c02c7e93d6a1e908af320d633d3d0a76b
    • MD5 SHA1 SHA512
    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Vidar Stealer

    • Downloads MZ/PE file

    • Deletes itself

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • 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

    • 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 v6

Tasks