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

• 1421b13fcff1ed8b4e8ed6d0ec1ef4ec
• 5163df6fc307a8bbb4ea8639f46660c3
• aaffc5262ba30e3ea20e6195f39d021a
• d46ced619302d537e07481dfe8a1e7e1
• 0a257f1b297660ebf8f981550c5bfcfe
• 4c0dfb625ea03d5521ac7c1408e6740f
• 42a84baaf9025e866598df4bc433edd6

SHA-256

• 98519a10598b6816b5df829028aab2ccd19ddae46c75f25b25c7bafbe7eb8ce3
• 7fcc0369ad02d92b3021bbc84e1eb49b919656e9b41fa1877e9232305c8cacd5
• 5c06e1544f6e3c1b235bf9a2c720e07a8a46253882d7d8552d42f472ad638109
• 4e0f0e48af90b53ca2f5bfe07730901ca963655051f5fd4fba455933bc9a72ec
• 10eaa98e8643cf303011d5305ea11337e90fa86dd5ce017c970d0f368465c70b
• 0572e16f59a71839019733faeb4a7b2dbfa8f8c2566ee662b0d6d32f519bbac4
• 1144ef0b85c23b61c1258d07cb3778500f071b491cd7b33f1675221983d44e88

SHA-1

• 7eb847e16c12dc9159e9f8a0b219926ddf9ec401
• 8ea04fbe4100172a06f702a45f36d4152f530b8c
• 93e3c3e08b0ba58374957299a74b68155e4f334f
• 135311ed819821a8a5043a0141c192e7b121a459
• 7b65e7feb8dde2b10c2ba4978df6951cd2c40225
• ade855385d1b003b56ac32b28c8b96339e30b16e
• c37488ccc7c7689a139b7975b68f81e159e3aeda

Remediation

• Block all threat indicators at your respective controls.
• Search for Indicators of compromise (IOCs) in your environment utilizing your respective security controls
• Emails from unknown senders should always be treated with caution.
• Never trust or open links and attachments received from unknown sources/senders.
• 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. Prioritize patching known exploited vulnerabilities and zero-days.