General

  • Target
    c68dc582f455248cf8926dbbd13aacee
  • Size 3.5MB
  • Sample210820-2elxsdjm96
  • SHA256 4af972633da29b91c8d527ee6e2df6e6eecff0f9b42918417e13b521e7ee5a39
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • vidar

Version
  • 40.1

Botnet
  • 983

C2
  • https://eduarroma.tumblr.com/

Attributes
  • profile_id

    983

Targets

    • Target
      c68dc582f455248cf8926dbbd13aacee
    • Size 3.5MB
    • SHA256 4af972633da29b91c8d527ee6e2df6e6eecff0f9b42918417e13b521e7ee5a39
    • MD5 SHA1 SHA512
    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Vidar Stealer

    • Downloads MZ/PE file

    • Checks BIOS information in registry

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

    • Deletes itself

    • Loads dropped DLL

    • 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.

    • Checks whether UAC is enabled

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v6

Tasks