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Rewterz Threat Alert – GuLoader Malspam Campaign – Active IOCs
September 7, 2022
Rewterz Threat Alert – LockBit Ransomware – Active IOCs
September 7, 2022

Rewterz Threat Alert – Cobalt Strike Malware – Active IOCs

September 7, 2022

Severity

High

Analysis Summary

Cobalt Strike first appeared in 2012 in response to alleged flaws in the Metasploit Framework, an existing red team (penetration testing) tool. Cobalt Strike 3.0 was released in 2015 as a stand-alone opponent emulation platform. However, researchers began observing threat actors using Cobalt Strike by 2016. Cobalt Strike’s use in hostile activities was previously connected with huge cybercriminal operations like TA3546 and APT40. Two-thirds of detected Cobalt hit efforts from 2016 to 2018 were attributable to well-resourced cybercrime organizations or APT groups, according to researchers.

Cobalt Strike lets the attacker install a ‘Beacon’ agent on the target PC which provides the attacker with a plethora of capabilities, including command execution, file transfer,  keylogging, mimikatz, port scanning, and privilege escalation. Cobalt Strike includes a toolkit called Artifact Kit that is used to create shellcode loaders.

Impact

  • Data Exfiltration
  • Information Theft

Indicators of Compromise

MD5

  • bfd1dfbbb8efde4ca7e131a97fba92a8
  • 905139a05673c8aa11f8fe22dc2a3694

SHA-256

  • 6a45a218d2d7a5bb8e5d6dd2e36b6399b97a8ddd15be490d2d5c95266fdf06e1
  • ec829e146c3955eaa66a9a5f318c4d359b0605f5d1679790aeaf0c2503b118fe

SHA-1

  • a79c2d0739bbea4cb7ac7a7fa15b0a15e1f97ad3
  • fe926dc0b95d25a36b20cd51370d312e913d2252

Remediation

  • Block the threat indicators at their respective controls.
  • Search for IOCs in your environment.
  • Services
    • Assess
      • Compromise Assessment
      • APT Assessment
      • Penetration Testing
      • Secure Architecture Design & Review
      • Red Team Assessment
      • Purple Team Assessment
      • Social Engineering
      • Source Code Review
    • Respond
      • 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
  • Solutions
  • Resources
    • Blog
    • Threat Advisory
  • Company
    • About Us
    • Careers
    • Contact
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