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Rewterz penetration testing services help organizations determine if a cyber attacker can gain access to their critical assets while giving them detailed insights of the overall business impact of a cyber attack.
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August 25, 2023
Severity High Analysis Summary In a notable case, an 18-year-old member of the Lapsus$ data extortion group, Arion Kurtaj, has been convicted by a London jury […]August 25, 2023
Severity High Analysis Summary The North Korea-linked threat actor known as Lazarus Group has recently been observed exploiting a critical security vulnerability in Zoho ManageEngine ServiceDesk […]August 25, 2023
Severity High Analysis Summary REvil/Sodinokibi, also known as Sodin, is a sophisticated ransomware discovered in April 2019. This elusive malware encrypts files and cleverly erases its […]Threat Insights
Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.
Connect with Us
Platform
Managed Security Services
Managed Penetration Testing
Rewterz penetration testing services help organizations determine if a cyber attacker can gain access to their critical assets while giving them detailed insights of the overall business impact of a cyber attack.
Resources
August 25, 2023
Severity High Analysis Summary In a notable case, an 18-year-old member of the Lapsus$ data extortion group, Arion Kurtaj, has been convicted by a London jury […]August 25, 2023
Severity High Analysis Summary The North Korea-linked threat actor known as Lazarus Group has recently been observed exploiting a critical security vulnerability in Zoho ManageEngine ServiceDesk […]August 25, 2023
Severity High Analysis Summary REvil/Sodinokibi, also known as Sodin, is a sophisticated ransomware discovered in April 2019. This elusive malware encrypts files and cleverly erases its […]Threat Insights
Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.
Connect with Us
Rewterz Threat Alert – PatchWork APT Threat Actor Group – Active IOCs
August 24, 2023
Rewterz Threat Advisory –Apache Airflow, Airflow SMTP Provider and Airflow IMAP Provider Vulnerabilities
August 25, 2023
Severity
Medium
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.
To protect against the DarkCrystal RAT and similar threats, it is important to regularly update software and security patches, implement multi-factor authentication, be cautious when opening emails and attachments, and regularly back up important data. It is also important to run anti-virus software and to be aware of the signs of a RAT infection, such as unusual system activity or slow performance. If a system is suspected of being infected with the DarkCrystal RAT or any other RAT, it is important to take immediate action to isolate the system and to seek professional assistance in cleaning up the infection.
Impact
- Unauthorized Remote Access
- Keylogging
- Information Theft
- Password Theft
Indicators of Compromise
MD5
- 4b4ef852a2147cca41bf3c73e79da6f2
- 22af9f47c40e08e5d5f785a026657a60
- 22c12a1a1a018ea3940603f92e0e3e13
- 04193f471892b1679ff3c2ac8617c252
- 1bd1abd7bf93ae7f69e69734269d233d
SHA-256
- 7295000cbc8bae3dcdc6fce425968de7e6afd4929b8799c579c8b00859fe1af2
- 6ade40b71ee50ca95629aaa593bc8f48335ff0eee6c47c3a1dcaacbd9f1eaf42
- 8a895e7a52d62a7efc7ba64d8dd81603d2e6a47b603a9584bcdf789593deef77
- b0f89a832ed2e8283b15c4058fe94c8b818d0782367fbf1923a6a0997dc2e558
- 87b6d7d10787bc226965d736a287a76feaf384d6c43bc710e437276d939e54f4
SHA-1
- 6337e2f6032cdbb1bc259355f04e2ff610233b55
- e528b7cc9ca32e65d6c9293e68e36a098a83c15d
- 4fe04a11e9a18339745827854ac632bc4ef3089f
- 60f41c7e6d4989ad484f7e1a6fccf707b26ae9a3
- 1b2a3d347047aac2288644c3f850400ba83d53dd
Remediation
- Block all threat indicators at your respective controls.
- Search for Indicators of compromise (IOCs) in your environment utilizing your respective security controls
- Maintain cyber hygiene by updating your anti-virus software and implementing a patch management lifecycle.
- Maintain Offline Backups – In a ransomware attack, the adversary will often delete or encrypt backups if they have access to them. That’s why it’s important to keep offline (preferably off-site), encrypted backups of data and test them regularly.
- Emails from unknown senders should always be treated with caution.
- Never trust or open links and attachments received from unknown sources/senders