Resubmissions

02/05/2026, 16:42

260502-t7p7jsct4x10

02/05/2026, 16:18

260502-tr3spsf18j10

General

  • Target
    CatGatekeeper_x64.7z
  • Size 117.3MB
  • Sample260502-tr3spsf18j
  • SHA256 537c58eac95934e793a1aeac46b8ea7435dabd5a3af312d426e24789064cfce2
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      CatGatekeeper_x64.exe
    • Size 128.1MB
    • SHA256 8fc8ae7284f5baf76367737930cf4b6584429f49a6b8b6f87c4f5550ce925d51
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detects Vidar Stealer

    • Family: Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Modifies WinLogon for persistence

    • Modifies Windows Firewall

    • Checks BIOS information in registry

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

    • Executes dropped EXE

    • 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.

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Looks up external IP address via web service

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

    • Checks system information in the registry

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

MITRE ATT&CK Enterprise v16

Tasks