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In addition to that, it renames this application by adding.
The ESET Research blog found “Before connecting to the targeted devices, the malware terminates a legitimate process that is used in standard daily operations. Unfortunately, security solutions with the greatest market share are more prone to tampering than smaller vendors. An example of this is the recent Indutroyer2 attack against a Ukrainian energy provider. One example of this is the Mcafee antivirus vulnerability discovered in 2019. Another way to terminate some security products is to hijack the flow by abusing DLL hijacking vulnerability bugs. They often find specific bugs in a product which allow them to terminate it gracefully.
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Targeted TamperingĬybercrime groups acquire popular security software, both free and premium, and research how it works. This runs an infinite loop of terminate/recovery, so the service is busy with its own recovery instead of detection and prevention. Even if the service recovers quickly, security systems are usually “ stateful” services, so it’s critical to recover the previous “state” of the service for accurate recovery.Ī persistent attacker can also use a DOS (Denial Of Service) attack against a system. The problem is there’s always a time gap-even if very small-in which a service is not running. But the SCM recovery mechanism by itself is not a super effective remedy for protecting critical services.
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Windows Service Control Manager (SCM) provides a recovery mechanism that can re-spawn services after termination. Modern malware often tries to shut down services in a system before moving to the next step in an attack vector. We can divide tampering techniques into two categories: generic and targeted. The Morphisec Labs threat research team has found a number of popular tactics in the wild used by threat actors, one of which is to deploy Malwarebytes sub-components as part of the attack vector.
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To bypass security vendors belonging to the Microsoft Virus Initiative (MVI) and shipped with Early Launch Anti Malware (ELAM) drivers (which allow better protection and isolation of services through Microsoft), threat actors may install a weaker security vendor that competes for the same security category and can be used to eliminate ELAM services. Furthermore, attackers can also use hook tampering methods to avoid monitoring.
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If this doesn’t work, they can install a compromised/vulnerable kernel driver to do the work from kernel space. How hard is this? If an attacker has already compromised admin privileges, they can run a simple script to kill all processes. You just need to terminate system processes and services. Worryingly, this is not usually very complicated to do. Cyber criminals are always researching, and try to terminate all monitoring tools and security solutions like EDR, NGAV, EPP etc. We've all seen these scenes in movies, but in the cyber security world it’s actually not far from reality. Apparently all you had to do to bypass this state-of-the-art security system is flick the switch that powers the bank’s electricity. Suddenly no electricity = no network = no security. A big, hard biometric lock on the main safe box is secured behind heavy steel doors.Įverything feels very secure until one day-the power shuts down.
The bank invests in state-of-the-art security equipment, with top quality cameras and sensitive alarms which communicate to a central system. But how many teams prioritize anti-tampering in cyber security? Threat actors know it's often easier to undermine these defenses to get to what they want. Cyber security solutions like next generation anti-virus (NGAV), endpoint detection and response (EDR), and endpoint protection platform (EPP) face abuse, tampering, and exploitation to achieve initial access and persistence.
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