TEMP.Reaper is an alternate name for the group known as APT37

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TEMP.Reaper is an advanced persistent threat (APT) that targets industrial control systems, such as those used in manufacturing and energy production. It has been active since at least 2017 and was first identified by security researchers in May of that year. The APT is known for its ability to persistently infect devices over a long period of time without being detected, allowing it to steal sensitive information or cause physical damage to the targeted systems. It has been linked to several high-profile attacks on industrial control systems around the world and continues to be a concern for organizations in critical infrastructure sectors.\\
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Techniques, tactics and practices: \\
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TEMP.Reaper is an advanced persistent threat that uses a variety of techniques to compromise industrial control systems. Some of these include exploiting vulnerabilities in software, using social engineering tactics such as phishing emails or watering hole attacks to gain access to the targeted system, and utilizing stealthy methods like rootkits and backdoors to avoid detection by security tools. The APT is also known for its ability to persistently infect devices over a long period of time without being detected, allowing it to remain undetected on compromised systems while continuing to exfiltrate sensitive information or cause physical damage to the targeted system.