T1102 Web Service

Enterprise

Adversaries may use an existing, legitimate external Web service as a means for relaying data to/from a compromised system. Popular websites, cloud services, and social media acting as a mechanism for C2 may give a significant amount of cover due to the likelihood that hosts within a network are already communicating with them prior to a compromise. Using common services, such as those offered by Google, Microsoft, or Twitter, makes it easier for adversaries to hide in expected noise. Web service providers commonly use SSL/TLS encryption, giving adversaries an added level of protection. Use of Web services may also protect back-end C2 infrastructure from discovery through malware binary analysis while also enabling operational resiliency (since this infrastructure may be dynamically changed).

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platforms

Platforms this applies to.

ESXiLinuxmacOSWindows
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tactics

ATT&CK tactics this technique serves.

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mitigations

ATT&CK mitigations that reduce this.

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NIST CSF 2.0 — areas of relevance (Protect / Detect)

NIST CSF 2.0 areas this most relates to (evidence-ranked).

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.

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mitigating controls (8)

Security controls that mitigate this.

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groups (15)

Threat groups associated with this.

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software (31)

Malware and tools associated with this.

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Detected by (Sigma) (13)

Sigma detection rules related to this.

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source

Where this definition is published.