T1048.003 Exfiltration Over Unencrypted Non-C2 Protocol
sub-techniqueEnterpriseAdversaries 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). This may include custom or publicly available encoding/compression algorithms (such as base64) as well as embedding data within protocol headers and fields.
platforms
Platforms this applies to.
tactics
ATT&CK tactics this technique serves.
sub-technique of
The broader entity this sits under.
mitigations
ATT&CK mitigations that reduce this.
detected by (6)
Data components that detect this.
countered by (D3FEND)
D3FEND countermeasures that counter this.
Detect
NIST CSF 2.0 — areas of relevance (Protect / Detect)
NIST CSF 2.0 areas this most relates to (evidence-ranked).
- PR.DSData Securitymoderate · backed by 11 of 23 mapped controls
- DE.CMContinuous Monitoringmoderate · backed by 7 of 23 mapped controls
- ID.AMAsset Managementmoderate · backed by 5 of 23 mapped controls
Derived from MITRE CTID (Apache-2.0) and the NIST 800-53 ↔ CSF crosswalk (public domain). Indicative relevance along the Protect/Detect axis — not a compliance assessment or coverage claim.
mitigating controls (23)
Security controls that mitigate this.
known-exploited CVEs (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2021-34473US | high10.0OT critical | KEV | ||
Microsoft Exchange Server Remote Code Execution Vulnerability | ||||
groups (11)
Threat groups associated with this.
software (22)
Malware and tools associated with this.
campaigns (2)
Campaigns that use this.
Detected by (Sigma) (9)
Sigma detection rules related to this.
source
Where this definition is published.