Exfiltration Over Unencrypted Non-C2 Protocol
Where this stands
No Sigma rule can address this — the telemetry MITRE names has no Sigma logsource behind it.
Sigma has no logsource taxonomy for mobile platforms. MITRE's telemetry here is mobile EDR and device APIs, which no Sigma rule can address.
What the technique is
Adversaries may steal data by exfiltrating it over an un-encrypted network protocol other than that of the existing command and control channel. The data may also be sent to an alternate network location from the main command and control server. Adversaries may opt to obfuscate this data, without the use of encryption, within network protocols that are natively unencrypted (such as HTTP, FTP, or DNS). Adversaries may employ custom or publicly available encoding/compression algorithms (such as base64) or embed data within protocol headers and fields.
Read it on attack.mitre.orgWhat MITRE says you would watch
- AN1818
Exfiltration Over Unencrypted Non-C2 Protocols can be difficult to detect, and therefore enterprises may be better served focusing on detection at other stages of adversarial behavior.
- AN1819
Exfiltration Over Unencrypted Non-C2 Protocols can be difficult to detect, and therefore enterprises may be better served focusing on detection at other stages of adversarial behavior.
Technique names and descriptions © MITRE ATT&CK®, CC BY 4.0. Not endorsed by MITRE.