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

• 46b420cb7e6d77f8591c8215091f2fca
• 125cf3885dab6a1b51d794b132eb13c8
• 34440412324a5dea60516bfda987b1ce
• 09b384b81eb15f87dc053c0462cdd082

SHA-256

• 62bb5c2640a02601b809d2926e6ae7a4c50f9140dd933a9c0870039b81e4ef53
• c58e486642ea0c02b19714755b363f6e5382162f61945aaf33de23bbe326ef93
• e4dd98105e81f06825abb15f5d3f9f5def8e0a93faaee00c2124455e50ef5024
• fb794c962e4e9845c0025aff4f9a9f3e867b3c265b97fdb076d29bc860a11d60

SHA-1

• b04c4d3ef6d6689f7883a50b28b380fc4f696686
• ca0076fd9138b670a7eb078c28e25a9c668cb6b6
• 9842e3927574f9bbf97a49b14eb8af1c3831c5c8
• 322f3e641ee87fc4eca8e2081ffeae0bf13768c1

Remediation

• Block all threat indicators at your respective controls.
• Search for Indicators of compromise (IOCs) in your environment utilizing your respective security controls
• Do not download documents attached in emails from unknown sources and strictly refrain from enabling macros when the source isn’t reliable.
• Enable antivirus and anti-malware software and update signature definitions in a timely manner. Using multi-layered protection is necessary to secure vulnerable assets
• Patch and upgrade any platforms and software timely and make it into a standard security policy.