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

• fc1fc658dbf89b3abe21bac02026c143
• 60f5197bf991d4162f22e54961cc72dc
• 2b3d8dd2f3a8234df668ca70617643eb
• a52ec9fca7c149255a26b5f94b626a3f
• 78c2ea2c13b2c79e06b1f48d8101e235
• b8d24c365dc8fc48012f8056299f9984

SHA-256

• 3600817af4f958db4552975eee97ab613256563093fa31371e1feaf1fc44407c
• 2aad83e6eed2f825f8d44c5258616e639d22a4a165a79eaa04026dc136a32be4
• f99ba9800b3e27f4e37f9be0d5c590351d7c3bcaf17bcdfa3fcc39dd1fb6f39a
• 0505d0071cbc17784945887be863998476d478d9f4a67d84b3dafbe0ccbb9e07
• 10dc6cbcc3770cd94b0ca2edbfabe4b915e5b774b1a729be25853fbf7255b331
• 227364d66f1e6519ba9b02ef769913f496a8dd5ed5e1f0aea41aaa3aa1da5086

SHA-1

• 61fcddfc49325d006e7419a856bfed6c8d46745c
• 68b12aae90b45984a5253dd2ca5949ef3dbd0abb
• 794188d9e2227be48ce17a6177ba9ba685a27761
• 64402213a38c554a79e19073117ad66d7f904123
• b4b3717319f29b6b489c7fbe8f9615dd560f1ca6
• 3f19d69de13f795578aaf8d18e59767bb6e9df56

Remediation

• Block all threat indicators at your respective controls.
• Search for Indicators of compromise (IOCs) in your environment utilizing your respective security controls
• 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.