T1567 Exfiltration Over Web Service
EnterpriseAdversaries may use an existing, legitimate external Web service to exfiltrate data rather than their primary command and control channel. Popular Web services acting as an exfiltration mechanism may give a significant amount of cover due to the likelihood that hosts within a network are already communicating with them prior to compromise. Firewall rules may also already exist to permit traffic to these services. Web service providers also commonly use SSL/TLS encryption, giving adversaries an added level of protection.
platforms
Platforms this applies to.
tactics
ATT&CK tactics this technique serves.
sub-techniques (4)
More specific entries beneath this one.
mitigations
ATT&CK mitigations that reduce this.
detected by (8)
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 Securitystrong · backed by 9 of 17 mapped controls
- DE.CMContinuous Monitoringmoderate · backed by 6 of 17 mapped controls
- ID.AMAsset Managementmoderate · backed by 5 of 17 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 (17)
Security controls that mitigate this.
known-exploited CVEs (3)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-54309US | critical9.8OT critical | KEV | ||
CrushFTP 10 before 10.8.5 and 11 before 11.3.4_23, when the DMZ proxy feature is not used, mishandles AS2 validation and consequently allows remote attackers to obtain admin access… | ||||
| CVE-2024-11182US | medium6.1OT critical | KEV | ||
An XSS issue was discovered in
MDaemon Email Server before version 24.5.1c. An attacker can send an HTML e-mail message
with
JavaScript in an img tag. This could
allow a remot… | ||||
| CVE-2022-41082US | —OT critical | KEV | ||
Microsoft Exchange Server Remote Code Execution Vulnerability | ||||
groups (6)
Threat groups associated with this.
software (8)
Malware and tools associated with this.
campaigns (4)
Campaigns that use this.
Detected by (Sigma) (12)
Sigma detection rules related to this.
source
Where this definition is published.