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Rewterz Threat Alert – FormBook Malware – Active IOCs
March 16, 2022
Rewterz Threat Alert – Lyceum APT aka HEXANE, Spirlin – Active IOCs
March 16, 2022

Rewterz Threat Alert – Russian Nation-State Actors Exploiting MFA Protocols and PrintNightmare – Russian-Ukrainian Cyber Warfare

March 16, 2022

Severity

Medium

Analysis Summary

Russian Nation-State threat actors have started exploiting default MFA protocols and PrintNightmare (CVE-2021-34527) vulnerability to run arbitrary codes with elevated privileges. The APT group used compromised credentials to gain access to victim organization. The credentials were obtained through brute-force attacks. From there they gained elevated privileges using the PrintNightmare vulnerability. They were also able to successfully authenticate to the Victim’s VPN as non-administrator users and make RDP connections to Windows domain controllers.

Impact

  • Credential Theft
  • Financial Loss
  • Privilege Escalation
  • System Compromise

Indicators of Compromise

CVE

  • CVE-2021-34527

Filename

  • ping[.]exe
  • regedit[.]exe
  • rar[.]exe
  • ntdsutil[.]exe

IP

  • 173[.]239[.]198[.]46

Remediation

  • Logging – Log your eCommerce environment’s network activity and web server activity.
  • Passwords – Implement strong passwords.
  • Admin Access – limit access to administrative accounts and portals to only relevant personnel and make sure they are not publicly accessible.
  • WAF – Set up a Web Application Firewall with rules to block suspicious and malicious requests.
  • Patch – Patch and upgrade any platforms and software timely. Prioritize patching known exploited vulnerabilities.
  • 2FA – Enable two-factor authentication.
  • Antivirus – Enable antivirus and anti-malware software and update signature definitions in a timely manner.
  • Services
    • Assess
      • Compromise Assessment
      • APT Assessment
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      • Incident Response
      • Incident Analysis
  • Transform
    • SOC Consultancy
    •     SOC Maturity Assessment
    •     SOC Model Evaluation
    •     SOC Gap Analysis
    •     SIEM Gap Analysis
    •     SIEM Optimization
    •     SOC Content Pack
  • Train
    • Security Awareness and Training
    • Tabletop Exercise
    • Simulated Cyber Attack Exercises
  • Managed Security
    • Managed Security Monitoring
      • Remote SOC
      • Onsite SOC
      • Hybrid SOC
    • Managed Security Services
      • Managed Detection and Response
      • Managed Endpoint Detection and Response
      • Managed Threat Intelligence
      • Managed Threat Hunting
      • Managed Risk-Based SOAR
      • Managed Penetration Testing
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