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121.36.80.174 has a threat confidence score of 87%. This IP address from China (AS55990, Huawei Cloud Service data center) has been observed in 33 honeypot sessions targeting SSH protocols. Detected attack patterns include ssh authorized keys persistence established, ssh automated post compromise recon and persistence chain. First observed on March 6, 2026, most recently active April 21, 2026.
Removal of filesystem attribute protections from the user’s .ssh directory followed by deletion and recreation of the directory and insertion of a new public key into authorized_keys. This pattern reflects deliberate modification of SSH trust configuration to establish persistent key-based access.
Identifies an SSH session performing comprehensive automated host reconnaissance (CPU, memory, disk, processes, users), followed by credential modification and SSH key manipulation consistent with scripted post-compromise takeover and persistence establishment.