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Rewterz Threat Alert – DanaBot Trojan – Active IOCs
August 13, 2021
Rewterz Threat Advisory –CVE-2021-37608 – Apache OFBiz File Upload Vulnerability
August 13, 2021

Rewterz Threat Alert – Cobalt Strike Malware – IOCs

August 13, 2021

Severity

High

Analysis Summary

Cobalt Strike is a paid penetration testing product that allows an attacker to deploy an agent named ‘Beacon’ on the victim machine. Beacon includes a wealth of functionality to the attacker, including, but not limited to command execution, keylogging, file transfer, SOCKS proxying, privilege escalation, mimikatz, port scanning, and lateral movement. Beacon is in-memory/file-less, in that it consists of stageless or multi-stage shellcode that once loaded by exploiting a vulnerability or executing a shellcode loader, will reflectively load itself into the memory of a process without touching the disk. It supports C2 and staging over HTTP, HTTPS, DNS, SMB named pipes as well as forward and reverse TCP; Beacons can be daisy-chained. Cobalt Strike comes with a toolkit for developing shellcode loaders, called Artifact Kit

advisory-1628836030.png

Impact

  • Data Exfiltration
  • Information Theft

Indicators of Compromise

Filename

  • Invoice756114[.]docm

IP

  • 193[.]56[.]146[.]99

MD5

  • 4d60e685e87d3e7581d1eed5a2d4b774

SHA-256

  • 25ea1ae3536c8c7310cb134737cae1f765dc32bfc2478888509d73527a0fbc44

SHA-1

  • 4accbda17d5b3d5d990b4c1a4ee1e4cb0ec7c725

URL

http[:]//193[.]56[.]146[.]99[:]3389/ga[.]js

Remediation

  • Block the threat indicators at their respective controls.
  • Do not visit links given in untrusted emails, even if they redirect to Google Drive.
  • Search for IOCs in your environment.
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    • Assess
      • Compromise Assessment
      • APT Assessment
      • Penetration Testing
      • Secure Architecture Design & Review
      • Red Team Assessment
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    • 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
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    • Contact
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