Rewterz Threat Alert – STRRAT Malware – Active IOCs

Severity

High

Analysis Summary

STRRat is a Java-based Remote-Access Trojan (RAT) with a slew of malicious features, notably information theft and backdoor capabilities. This RAT was first identified at the German cybersecurity firm in June 2020. This malware uses plugins to grant the attacker remote access. STTRat steals login credentials from browsers and email clients, logs keystrokes, and exploits vulnerable Windows operating systems remotely. The malware adds the file extension (.crimson) to Notepad to show a bogus ransom message. STRRAT malware supports the browsers Firefox, Chrome, Foxmail, Outlook, Internet Explorer, and Thunderbird.

It permits threat actors to remotely control compromised machines/computers. According to research, this RAT can be used to run commands that let users upload files, download files, delete files, open files, restart computers, and carry out a variety of other tasks.

Furthermore, users who have the STRRAT installed on their computers run the risk of experiencing issues with online privacy, surfing security, financial loss, identity theft, account lockout, system infection with further infections, etc.

Impact

• Unauthorized access
• Information theft
• Exposure of sensitive data

Indicators of Compromise

MD5

• 6b23a74022ed579c5bc50d52e2876648
• a78fd04e895bb5c0bb1229a7afb91878
• 7db2429b55d78e3c8c4d2ecafad31001
• 4d7a44960539f8bd457ca7365eae26e6

SHA-256

• 736c46cbc19813113b77ea29f42b32609735953f65a6e597ae73d7018dfc873f
• 9390ec2fb713287b0ac1b09f911e3f5b68a097a1a0e5c4b35fa122e7d2be6267
• 52765126cdf82afc355f7bdac73e810fe1e9afdfccd33d2160078e519df9f24e
• e0e57b881f1d357a834aa8f1851072b55f56b4cc9481c9acf7ee53a3067a1053

SHA-1

• 4fe9512fd26ab40029ad565416760d2e34649a34
• fbf2b730cef042f841a270cf7ba2140c7791d04d
• 44d386a7558c97b86811f10189f87a7d26bc61e5
• bc252462f5269faa2f20ab48d2939601efabe9a4

Remediation

• Block all threat indicators at your respective controls.
• Search for IOCs in your environment.
• Passwords – Ensure that general security policies are employed including: implementing strong passwords, correct configurations, and proper administration security policies.
• Admin Access – limit access to administrative accounts and portals to only relevant personnel and make sure they are not publicly accessible.
• Patch and upgrade any platforms and software timely and make it into a standard security policy. Prioritize patching known exploited vulnerabilities and zero-days.
• Enable antivirus and anti-malware software and update signature definitions in a timely manner. Using multi-layered protection is necessary to secure vulnerable assets