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Rewterz Threat Alert – NJRAT – Active IOCs

November 1, 2021
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Rewterz Threat Alert – PatchWork APT Group Targeting Pakistan – Active IOCs

November 1, 2021

Rewterz Threat Alert – Cobalt Strike Malware – Active IOCs

Severity

Medium

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.

Impact

  • Data Exfiltration
  • Information Theft

Indicators of Compromise

IP

  • 172[.]105[.]239[.]15
  • 95[.]179[.]132[.]188
  • 45[.]138[.]157[.]138
  • 13[.]56[.]250[.]12

Remediation

  • Block all threat indicators at your respective controls.
  • Search for IOCs in your environment.

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