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Rewterz Threat Alert – Emotet – Active IOCs
March 1, 2022
Rewterz Threat Alert – New Data Wiper Targeting Ukraine – Russian-Ukrainian Cyber Warfare
March 1, 2022

Rewterz Threat Alert – Cobalt Strike Malware – Active IOCs

March 1, 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

IP

  • 52[.]15[.]81[.]204

MD5

  • 300bd2c447ad9e271b60c7d36fe3cb7c
  • 9d11dcd320339ba7e2d28493eb412a6c

SHA-256

  • 2fe7b81253f7726822e0f6ff1a3bacea73ca2356ca4dcb460493586629961ad0
  • 9a8d634c047c0accd94c7e0dbf7f7b6c5f4d9cbcd6bba48d51549bd1568febb4

SHA-1

  • 98457ae5a859ce5623f5c6ca68a374bf9118dd40
  • 6b5681e35dbc1f9650856f53efed194c80b25c42

URL

  • http[:]//52[.]15[.]81[.]204/mJRT
  • http[:]//52[.]15[.]81[.]204/dot[.]gif

Remediation

  • Block all threat indicators at your 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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