Rewterz Threat Alert – Remcos RAT – Active IOCs

Severity

High

Analysis Summary

Remcos malware has been operating since 2016. This RAT was originally promoted as genuine software for remote control of Microsoft Windows from XP onwards, and is frequently found in phishing attempts due to its capacity to completely infect an afflicted machine. Remcos malware attacks Windows systems and provides the attacker complete control over the machine.It is frequently distributed by malicious documents or archive files that contain scripts or executables. Remcos, like other RATs, offers the threat actor complete access over the infected PCs which allow them to record keystrokes, passwords, and other critical information. Remcos incorporates various obfuscation and anti-debugging techniques to evade detection. Regular updates of its features by its creators make this malware a challenging adversary.

Impact

• Breach of: Victim’s machine information (OS version, computer name, system type, product name, primary adapter).
• User information (user access, user profile, user name, user domain)
• Processor information (processor revision number, processor level, processor identifier, processor architecture)

Indicators of Compromise

MD5

• 1539be715cb0839ba641cb081ab4f4af
• 99b649db223cbef960a8423dd7d50381
• 32ea22866d841b7d43f3213f4daa869e

SHA-256

• e87c654b129af4a7012d6191873a5baaa3d122902bdeae57e110844be145b44e
• caf08c94a95672212ab753293db7e6ca97cec7ddc28ece68d978f3008a5a6668
• 91a6073fee95df45b5339667b67a48859d5be0e6cf8a8150ec3f448ee101d4a2

SHA-1

• f45c233301c64df2a58a08211e78eaa5ff546a01
• e4912bb05d068e6edbe5576a9a929d14590efbe3
• 6d447d17f6940d420dea93bda24d42424ef0c5b2

Remediation

• Block all threat indicators at their respective controls.
• Search for IOCs in your environment.