1/8/2023 0 Comments Knockknock securityThe attack is particularly clever in that it distinctively and slowly targets system accounts. While a majority of the activity stems from IPs registered to service providers in China, there is activity originating out of 15 other countries including Russia, Brazil, US, Argentina, Gabon, Azerbaijan, Malaysia. When the attacks against one enterprise seem to be ramping up, they are slowing down for a different enterprise. In an attempt to further obfuscate the attack, enterprises are targeted in a staggered manner. the attack focuses on a handful of users at a time, before moving on to the next set). The smaller size of the botnet is likely designed to keep the attacker low key (i.e. The attack is launched using a relatively small network of 83 confirmed IPs distributed across 63 networks. KnockKnock has been operational since May 2017 and is currently active. Second, it is devoid of any bursts in hacking activity, and averages only 3-5 attempts per account in order to try and fly under the radar of traditional defenses. First, it targets a very small proportion (typically <2%) of the O365 account base. Attack Profileįirst, it should be noted that KnockKnock is not a brute force attack for two reasons. KnockKnock was designed to primarily attack system accounts that are not assigned to any one individual user, making them particularly vulnerable, as we’ll describe later. One of the key distinctions of this new attack is the nature of the accounts that are being targeted.
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