12/15/2023 0 Comments Cobalt strike beacon email![]() Majority of the time, the Host header has the dotted quad representation of the IP address and they are different for GET and POST transactions. We have also concluded that almost all the time, the host header data is different in GET and POST transactions. If profiles are using domains in their host header, they are more likely to be analyzed by the network security devices. We have examined the profiles for the usage of various domains to evade the Network detections. We discovered the maximum number of Team servers hosted on 2 countries namely, China and USA.įigure 3: Geo Location of the Team servers ![]() We have located those Team Servers in various countries.įigure 3 shows percentages of the Team servers found in different countries. Based on those different identification tactics, we have located the Team Servers on the internet. In the blog, we have explained how to identify the Team Server in-the-wild. The custom profiles have different URIs, the encrypted data is placed in Referrer header or appended to URI etc.įigure 2: Statistics of the modified default profile and custom profiles. Every 3rd profile we discovered is a custom profile. Default profiles (left side) and a modified default profile (right side)įigure 2 shows the statistics of the modified default profile with custom profiles. In the modified default profile, the author reduced the number of GET URIs and added HTTP request headers.įigure 1. The left side shows the default profile, while the right side shows the modified default profile. Figure 1 shows an example of modifications made to the default profile. Modifications may include adding extra request headers, reducing the number of URIs, and adding a cookie parameter. We have observed that most of the profiles are modified versions of the default profile, which is included in the Cobalt Strike package.
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