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According to Cisco network consulting engineers, preparation includes taking inventory of all primary business and IT resources as well as determining who will authorize business decisions throughout an incident. Types of response methodologies Helpful practices: 6 response methodologies Preparationīusinesses of all sizes should be prepared to respond to a worm attack. Even very small small IT teams should have a clear, systematic plan in place for mitigating worm attacks. Without a coordinated response, mitigating worm attacks can be even more challenging-if not impossible. Reaction time is critical, so have a planĬontaining worm attacks requires coordination among everyone responsible for network management. Depending on the severity of the attack, infected systems may need to be reinstalled entirely to ensure a thorough cleanup from the event. This last step in the worm mitigation process involves remediating from the attack as well as addressing any other necessary patching of machines and systems. If removal is not possible, then the infected machines need to be blocked from connecting to and accessing the network. In this third step of worm mitigation, infected machines are isolated and then disconnected and removed from the network. Patching the vulnerabilities the worm is using to spread will help contain the attack. Once it is clear which parts of the network the worm has infected, and those parts have been contained, other vulnerable systems must be scanned and patched. Infected machines must be isolated from machines that are not yet infected. The first step in mitigating a worm attack is to move swiftly to contain the spread of the worm and determine which machines are infected, and whether these devices are patched or unpatched. Some cyber criminals will even go on to use these systems in a botnet-a network of infected computers that can send spam, steal data, and more.Ĥ steps to respond to a worm attack Step 1: Containment This is how malicious actors gain access to multiple systems.
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Once a worm has propogated throughout a device or system, it continues to spread automatically, using vulnerabilities in other systems attached to the system initially targeted.
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From there, the adversary can cause significant damage, including data theft, and potentially gain access to multiple systems. Over time, they could gain access rights equivalent to those of a system administrator. In the last stage of a worm attack, the malicious actor behind the campaign tries to increase their level of access to the targeted system. Through propagation, the worm makes its way to other new targets in the network-consuming bandwidth and hard-drive space and undermining device and system performance as it spreads. Once a worm is installed on a vulnerable device or system, it begins to self-replicate automatically. Or, it may have arrived through a malicious email or IM attachment or a compromised removable drive.
#INTERNET WORM VIRUS SOFTWARE#
The worm may have been transmitted through a software vulnerability. The initial phase of a worm attack occurs when the worm is first installed on a vulnerable machine. The 3 stages of a worm attack Step 1: Enabling vulnerability