

Windows BitLocker Flaws Allow Security Bypass
October 16, 2025
DarkCrystal RAT aka DCRat – Active IOCs
October 16, 2025
Windows BitLocker Flaws Allow Security Bypass
October 16, 2025
DarkCrystal RAT aka DCRat – Active IOCs
October 16, 2025Severity
High
Analysis Summary
The Mirai botnet is a type of malware that infects Internet of Things (IoT) devices, such as routers, security cameras, and other smart devices, to launch distributed denial-of-service (DDoS) attacks. The botnet was first discovered in August 2016 and quickly gained notoriety for its ability to launch some of the largest DDoS attacks ever recorded, including an attack that took down the DNS provider Dyn.
Mirai works by scanning the internet for devices that use default or easily guessable passwords, such as "admin" or "password". Once a vulnerable device is identified, the malware infects it and adds it to the botnet, which can then be used to launch DDoS attacks on a target.
Mirai is particularly effective because it can exploit the large number of poorly secured IoT devices that are connected to the internet. This makes it difficult to defend against, as many of these devices have limited processing power and memory, and may not receive regular security updates.
Since its discovery, Mirai has continued to evolve and new variants of the malware have been detected. The best defense against Mirai is to ensure that IoT devices are properly secured, with strong passwords and regular security updates. Network administrators can also use tools to monitor for unusual traffic patterns that may indicate a DDoS attack is underway.
Impact
- Server Outage
- Data Loss
- Website Downtime
Indicators of Compromise
MD5
18246ba16907d5b78d45ccc7a43c2cfe
61f0582b7fc21371ac38d391803cadd2
81de0a2ff74023de09f97e570bf8d0ce
SHA-256
d66148407b9771e238a77dd0cf0592e959b69d96f63439030db061ee6d340f7a
ce26dbd56140918dfe97a9b56a09eba18fa19866bba4aa5a1d7948f7948fce8a
a73984af804f580d47374f5e9d17e312888fcdb20f515386601a2792e232adc3
SHA1
0bd843ce5c5584d44ef0d70a0db18cb1c8d63fa7
554722f8cfd804378e08e49cf7710a0bc614d3bf
e04972ad35ebc505253acd6c994b5ddf08deadeb
Remediation
- Block all threat indicators at your respective controls.
- Search for indicators of compromise (IOCs) in your environment utilizing your respective security controls.
- Never trust or open links and attachments received from unknown sources/senders.
- Upgrade your operating system.
- Enable antivirus and anti-malware software and update signature definitions on time. Using multi-layered protection is necessary to secure vulnerable assets.
- Immediately change default passwords on IoT devices to unique ones.
- Keep devices' firmware and software up to date to ensure that known vulnerabilities are patched.
- Implement firewalls and intrusion detection systems to monitor and control traffic to and from IoT devices.
- Employ tools that can identify unusual behavior or traffic patterns that might indicate a DDoS attack or a compromised device.
- Disable any unnecessary services or features on IoT devices to reduce their attack surface.
- Follow security best practices, such as disabling remote management if not needed and enabling security features provided by the device manufacturer.
- Deploy intrusion detection and prevention systems (IDS/IPS) to monitor for anomalous or malicious network activity.
- Set up alerts for unusual traffic patterns that might indicate a DDoS attack or a compromised device.








