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

• c9413e4bcc1b203fb87d6c9b17bc73df
• a71b92a0262b4067b2da39ad1f39bef5
• d39d493b27584c9c4dc9e0d3f03d0a0a

SHA-256

• 888de52dc14a83cebb5782e01714877e4ae14cb57ef572a127ef75aa8b7af848
• 1787f73acf804bff30fe863e077fb5bc9799b3cb39065534198f894757907e79
• 44218ac9cedc1b94a4f7ca1483be08ee58ccfe2f380aeef668e1ba887bd2520b

SHA-1

• 6b041c17a3dea5854c1e5a3f97cbce22e1b8041e
• 5fab5dc05795e35879eeab69f9c8172e4963431c
• da89c02ba7e27bca48d1d8b38ec7e759c09818a1

Remediation

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