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Rewterz Threat Alert – RedLine Stealer – Active IOCs
September 15, 2022
Rewterz Threat Alert – SmokeLoader Malware – Active IOCs
September 16, 2022

Rewterz Threat Alert – DarkCrystal RAT (DCRat) – Active IOCs

September 16, 2022

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

  • Data Theft
  • Exposure of Sensitive Data

Indicators of Compromise

MD5

  • 376f4a99cc6bc6b39fed16430bcb57a3
  • 36d335dac984a522421bc91964725fb2
  • 3031cd4e1f880f65d88764c449c855f

SHA-256

  • da0fab9ff04f3e8e0a9f8eb12eeafacc8328074cd7313d3f8a28ea33c340335b
  • c32d9f3e68923d40027dad0bb525795d5aa605b039e5b480a7d713c6b8d44594
  • c60aed547fed1a45b7c356d7f795663b200b26b6f37ca052cfc6f06315fcef00

SHA-1

  • 00035aafbdb137acc02ea0b3fb340249929fb7ad
  • 5cefbce23c88328fe51590e9c7d6a0e34c05e941
  • f7a4c0324b53633aeb7a818285f8c72facfa061b

Remediation

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