Edge

DNS investigation on Windows

Recently, a friend of mine has asked for my help in an investigation. In his SIEM system, he saw that a machine generated some DNS sinkhole events, but he couldn’t find the originally requested DNS by the host. The events were generated because the machine tried to resolve a DNS hostname which was marked as malicious in the DNS Server. Unfortunately due to the huge amount of DNS requests in a network, this company did not store the DNS events in the SIEM.
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