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DCRat

19
Global rank
8 infographic chevron month
Month rank
14 infographic chevron week
Week rank
6057
IOCs

DCrat, also known as Dark Crystal RAT, is a remote access trojan (RAT), which was first introduced in 2018. It is a modular malware that can be customized to perform different tasks. For instance, it can steal passwords, crypto wallet information, hijack Telegram and Steam accounts, and more. Attackers may use a variety of methods to distribute DCrat, but phishing email campaigns are the most common.

Remote Access Trojan
Type
ex-USSR
Origin
1 July, 2018
First seen
18 June, 2024
Last seen
Also known as
Dark Crystal RAT

How to analyze DCRat with ANY.RUN

Remote Access Trojan
Type
ex-USSR
Origin
1 July, 2018
First seen
18 June, 2024
Last seen

IOCs

IP addresses
79.137.248.10
144.126.230.14
46.246.14.12
5.42.104.243
47.106.131.255
20.216.178.113
185.225.18.110
46.246.4.3
46.246.80.15
193.161.193.99
46.246.6.15
46.246.4.13
54.94.248.37
46.246.84.5
46.246.82.6
46.246.84.8
18.231.93.153
46.246.14.16
18.229.146.63
18.158.249.75
Hashes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hjgeuyiohfkjsdfhgiwe.duckdns.org
140487.clmonth.nyashteam.top
a0994027.xsph.ru
n9shteam1.top
a0992844.xsph.ru
cq83230.tw1.ru
a0993651.xsph.ru
l0sscommun.temp.swtest.ru
a0993016.xsph.ru
a0993204.xsph.ru
a0993445.xsph.ru
751120cm.n9shteam2.top
a0992098.xsph.ru
196844cm.n9shteam1.top
a0982426.xsph.ru
a0986534.xsph.ru
a0913612.xsph.ru
a0987707.xsph.ru
newforting.duckdns.org
892549.clmonth.nyashteam.top
URLs
http://a0994812.xsph.ru/LinePacketGeoasyncuniversal.php
http://a0995485.xsph.ru/369eea3a
http://ck53254.tw1.ru/_Defaultwindows
http://a0995122.xsph.ru/e10fc428.php
http://a0987400.xsph.ru/L1nc0In.php
http://a0987400.xsph.ru/L1nc0In
http://a0994533.xsph.ru/b674edbb.php
http://a0993996.xsph.ru/528ed93e.php
http://a0986195.xsph.ru/_Defaultwindows.php
http://a0986195.xsph.ru/_Defaultwindows
http://a0994900.xsph.ru/32f05f31.php
http://a0986288.xsph.ru/a32875a6.php
http://424673cm.n9shteam2.top/_Central.php
http://23.227.193.58/trackwordpressdleCentral
http://a0935162.xsph.ru/b548c8ba.php
http://a0993445.xsph.ru/12c5a512.php
http://a0993651.xsph.ru/L1nc0In.php
http://a0994027.xsph.ru/L1nc0In.php
https://pastebin.com/raw/HwFAQkpM
http://l0sscommun.temp.swtest.ru/L1nc0In
Last Seen at

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What is DCRat malware?

DCRat, also known as Dark Crystal RAT, is a remote access trojan (RAT) that lets threat actors take control over an infected machine and extract users’ data, such as the information copied to the clipboard and personal credentials from apps. The malware is known for its stealthiness and its ability to evade detection by security software. DCrat has been in operation since 2018, yet it regularly undergoes changes aimed at advancing and expanding its capabilities.

The malware consists of several components each responsible for a certain type of malicious activity, including stealing of cryptocurrency and keylogging. On top of that, the authors of DCrat have published a special software called DCRat Studio, which serves as a tool for developing new modules for the malware.

DCrat's popularity can be attributed in part to its low cost. Its one-month license goes for a mere $5, while a lifetime one is available for $40. This is a stark contrast to other malware-as-a-service options. For instance, a lifetime AgentTesla subscription will require forking out $120. According to researchers, such prices are due to the malware being simply a pet project of a single developer, who does not work on it full-time. The developer is likely based in the ex-USSR region.

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Technical details of the DCRat malicious software

Although back in 2018, the malicious program utilized Java, it switched to C# in 2019. As a result, nowadays, the majority of Dark Crystal RAT’s modules are written in the C# programming language. However, the administrative server for this malware is developed with JPHP, which is an implementation of PHP that relies on the Java Virtual Machine.

Different samples of the malware have been observed to be outfitted with evasion and obfuscation techniques. For instance, in order to create a layer of protection against malware analysts’ attempts to reverse engineer its code, DCrat’s payload can be obfuscated with Enigma Protector.

The standard set of tools available to threat actors using DCrat includes:

  • DCRat can record the victim's keystrokes, which can be used to steal passwords and other sensitive information.
  • The separate CryptoStealer module of the malware allows attackers to get access to users’ crypto wallet information.
  • It can collect information about the system (CPU and GPU stats, etc.)
  • It can take screenshots of the victim's computer, which can be used to monitor their activity.
  • DCRat can exfiltrate information from browsers, such as session cookies, auto-fill credentials, and credit card details.
  • The malware can transmit the contents of the victim's clipboard to its command-and-control server (C&C).
  • It can hijack Telegram, Steam, Discord accounts.
  • DCrat can function as a loader, dropping other types of malware on the infected computer.

Additionally, DCrat can execute a persistence algorithm to retain control over the system. For instance, the malware can copy itself to a random running process and to the root directory (C:). It then can create shortcuts to these copies in the user's Startup folder. It can also add registry values that point to these shortcuts. This allows DCrat to start automatically when the computer boots up.

It is important to note that Dark Crystal RAT is polymorphic, meaning that attackers can use its builder functionality to add changes to the malware’s code to make it difficult to detect using traditional methods, such as file hash.

Execution process of DCRat

Uploading Dark Crystal RAT to the ANY.RUN sandbox lets you quickly see the malicious activities triggered by the malware. Here is a sample of DCrat executed in the interactive sandbox.

DCrat's flexibility makes it challenging to handle, but there are things that can help us pinpoint it. For example, DCrat rarely produces malicious activity in its current process. Like most malware, it prefers to create large process trees and then infiltrate a harmless process at some point to detonate later. By using ANY.RUN, we can easily identify the process targeted by the malware.

DCRat process tree DCRat's process tree

On top of that, it can delay execution for a period of time after the infection, drop executables, run embedded payloads, and use WMI queries to detect a virtualized environment or or to gain persistence in the system.

DCRat process tree DCRat's WMI queries

Distribution methods of the DCRat malware

Since Dark Crystal RAT is sold openly on the Internet, cyber criminals of all skill levels have access to it. Subsequently, there are many different methods they implement to drop the payload on victims’ computers. Yet, as is the case with most remote access trojans, including Vidar, njRAT, and QuasarRAT, DCrat’s main way of infecting a system is via phishing emails.

Threat actors devise sophisticated multi-staged attacks intended to manipulate the victim into believing that the fake email is actually legitimate and the attachment file it contains is safe to open. These downloadable files are usually in an office suite format, such as .docx or .xls, and have built-in macros or other mechanisms that can trigger the chain reaction which will result in DCRat being dropped onto the system.

There are also accounts of users unsuspectingly downloading a DCrat executable from websites distributing torrent files. In such cases, the malware can be disguised as a legitimate program. Once executed, the program installs the malicious program and runs it, stealing the user’s data often without them being aware of it.

Conclusion

Dark Crystal RAT is a remote access trojan that constitutes a significant concern for organizations and individuals worldwide. The malware’s low price tag and modular design make it an in-demand tool among cyber criminals. To protect your system from DCrat, you should be very careful about opening links or attachments from unknown senders.

Instead of taking the risk of downloading and opening potentially harmful files or clicking on malicious links, you can first analyze them in a sandbox environment like ANY.RUN. This will allow you to quickly and safely determine whether the file is malicious or not. ANY.RUN will also provide you with a detailed report about the malware, including its indicators of compromise (IOCs) and tactics, techniques, and procedures (TTPs). This information can be used to protect your organization from future attacks.

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