{"description": "Enterprise techniques used by Kessel, ATT&CK software S0487 v1.0", "name": "Kessel (S0487)", "domain": "enterprise-attack", "versions": {"layer": "4.3", "attack": "10", "navigator": "4.5"}, "techniques": [{"score": 1, "techniqueID": "T1560", "showSubtechniques": false, "comment": "[Kessel](https://attack.mitre.org/software/S0487) can RC4-encrypt credentials before sending to the C2.(Citation: ESET ForSSHe December 2018)\t"}, {"score": 1, "techniqueID": "T1059", "showSubtechniques": false, "comment": "[Kessel](https://attack.mitre.org/software/S0487) can create a reverse shell between the infected host and a specified system.(Citation: ESET ForSSHe December 2018)\t"}, {"score": 1, "techniqueID": "T1554", "showSubtechniques": false, "comment": "[Kessel](https://attack.mitre.org/software/S0487) has maliciously altered the OpenSSH binary on targeted systems to create a backdoor.(Citation: ESET ForSSHe December 2018)"}, {"techniqueID": "T1132", "showSubtechniques": true}, {"score": 1, "techniqueID": "T1132.001", "showSubtechniques": true, "comment": "[Kessel](https://attack.mitre.org/software/S0487) has exfiltrated data via hexadecimal-encoded subdomain fields of DNS queries.(Citation: ESET ForSSHe December 2018)"}, {"score": 1, "techniqueID": "T1030", "showSubtechniques": false, "comment": "[Kessel](https://attack.mitre.org/software/S0487) can split the data to be exilftrated into chunks that will fit in subdomains of DNS queries.(Citation: ESET ForSSHe December 2018)"}, {"score": 1, "techniqueID": "T1140", "showSubtechniques": false, "comment": "[Kessel](https://attack.mitre.org/software/S0487) has decrypted the binary's configuration once the main function was launched.(Citation: ESET ForSSHe December 2018)"}, {"techniqueID": "T1048", "showSubtechniques": true}, {"score": 1, "techniqueID": "T1048.003", "showSubtechniques": true, "comment": "[Kessel](https://attack.mitre.org/software/S0487) can exfiltrate credentials and other information via HTTP POST request, TCP, and DNS.(Citation: ESET ForSSHe December 2018)"}, {"score": 1, "techniqueID": "T1041", "showSubtechniques": false, "comment": "[Kessel](https://attack.mitre.org/software/S0487) has exfiltrated information gathered from the infected system to the C2 server.(Citation: ESET ForSSHe December 2018)"}, {"score": 1, "techniqueID": "T1105", "showSubtechniques": false, "comment": "[Kessel](https://attack.mitre.org/software/S0487) can download additional modules from the C2 server.(Citation: ESET ForSSHe December 2018)"}, {"score": 1, "techniqueID": "T1556", "showSubtechniques": false, "comment": "[Kessel](https://attack.mitre.org/software/S0487) has trojanized the ssh_login and user-auth_pubkey functions to steal plaintext credentials.(Citation: ESET ForSSHe December 2018)"}, {"score": 1, "techniqueID": "T1027", "showSubtechniques": false, "comment": "[Kessel](https://attack.mitre.org/software/S0487)'s configuration is hardcoded and RC4 encrypted within the binary.(Citation: ESET ForSSHe December 2018)"}, {"score": 1, "techniqueID": "T1090", "showSubtechniques": false, "comment": "[Kessel](https://attack.mitre.org/software/S0487) can use a proxy during exfiltration if set in the configuration.(Citation: ESET ForSSHe December 2018)"}, {"score": 1, "techniqueID": "T1082", "showSubtechniques": false, "comment": "[Kessel](https://attack.mitre.org/software/S0487) has collected the system architecture, OS version, and MAC address information.(Citation: ESET ForSSHe December 2018)"}, {"score": 1, "techniqueID": "T1016", "showSubtechniques": false, "comment": "[Kessel](https://attack.mitre.org/software/S0487) has collected the DNS address of the infected host.(Citation: ESET ForSSHe December 2018)"}], "gradient": {"colors": ["#ffffff", "#66b1ff"], "minValue": 0, "maxValue": 1}, "legendItems": [{"label": "used by Kessel", "color": "#66b1ff"}]}