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Severity
High
Analysis Summary
DCRat – a Russian backdoor, was initially introduced in 2018, but rebuilt and relaunched a year later. The DCRat backdoor appears to be the product of a single threat actor who goes online with the pseudonyms of “boldenis44,” “crystalcoder,” and Кодер (“Coder”).
DCRat is one of the cheapest commercial RATs. For a two-month membership, the price starts at 500 RUB (less than 5 GBP/US$6), and it periodically drops even cheaper during special offers. This is written in .NET and features a modular structure, allowing affiliates to create their own plugins using DCRat Studio, a dedicated integrated development environment (IDE).
The malware’s modular architecture allows it to be extended for a variety of nefarious objectives, including surveillance, reconnaissance, data theft, DDoS attacks, and arbitrary code execution.
The DCRat consists of three parts:
- A stealer/client executable
- The command-and-control (C2) endpoint/ interface is a single PHP page
- An administrator tool
The malware is still in development, the author announces any news and updates through a dedicated Telegram channel with about 3k users updated with any news and changes.
Impact
- Unauthorized Remote Access
- Keylogging
- Information Theft
- Password Theft
Indicators of Compromise
MD5
- 142fc3f98e2b78474c392c72a6e4b826
- 2e6fcc3e0fec764cd998291edae41835
- 97fd39727f09d456c6e6e8a3fb9b4028
- f763d6937405d921474f3996910dc816
- fc938e39c9d9e09ef95d04b7529ff7cf
SHA-256
- f45baeadbd3670a3d6f0e5e5dd53325269153dcd02195c8d98d1a49db8a6b46c
- d89d94282170e98d32127e2c87754a1badf527018da2cb9338c3e5e6487e90c2
- 29b84cbec0c92620955afd16358fb786df50fdc6dc024399cc9d2f5d8f40f38a
- 278b30b6a9c6ffba21a71c5cad9f4b64d383b868e79098be97a5b92cb57e6667
- c01b4811306e46eb5b8bd85e25a5d6c9fdf508983855278e2ad905bcbd4a052d
SHA-1
- 85e4bf6f82e3bc640652df5982a937fa1457e541
- 73e8e155eab7cf2512047c49a015c9f347af3186
- f27399f10573bb39ebc472b7fdfa649e48494dfd
- e81cd22b8e4a361c20c926d2aecdbe231274a656
- c726cefba588cea3135ba7bb47228676d68ce51a
Remediation
- Block all threat indicators at your respective controls.
- Search for IOCs in your environment.