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

• f1959b0dc78741499e08edfa6f61f899
• a093000bbddd75273d958e71b5faf1ba
• d26561db3d25e18d216e021ba1f2a915
• 066728d418420951e44c7f01d7a0c89c

SHA-256

• 1e124087f413475b6e36cbbcf5dc8bca0d4b0abe981e6fdfe7794370689673b2
• f0d5d87f55e2ce86aa079887156af418fef3bdfe9c3b38ef675c02ff818b26c6
• 560842e362899a2225b36fda77c11720e6ef5e5a3e3544d1d0fb319ed4a84ab7
• 765e1dc57406ff54f461069d976f3641b9a36d0c6cac127644a8f720ef372de0

SHA-1

• 65d0f25f80fea1057adc62e8482bb2a94464e8fe
• 1ed6a85df55a2c2db9e7a419bbf09a3184f4daac
• 6692a653306a1bd3d111f0b77181e82019def2a6
• 1883276f80f10075c2708c190e9cfa8e0941a449

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