Full Report
On 2022-05-04, a campaign was reported, involving UNC2903, gaining initial access via , while using IMDS abuse, SSRF,.
Analysis Summary
# Threat Actor: UNC2903
## Attribution & Identity
* **Actor:** UNC2903
* **Aliases/Associations:** Not explicitly mentioned in the provided context, but often tracked under an umbrella designation.
## Activity Summary
* **Recent Campaigns (as of 2022-05-04):** A campaign was reported utilizing cloud metadata service abuse for initial access.
## Tactics, Techniques & Procedures
* **Initial Access Techniques:**
* IMDS abuse (Instance Metadata Service v1/v2 abuse)
* SSRF (Server-Side Request Forgery)
## Targeting
* **Sectors:** Cloud environments (Inferred from TTPs focusing on IMDS/SSRF).
* **Geography:** Not specified.
* **Victims:** Not specified.
## Tools & Infrastructure
* **Malware Families Used:** None explicitly mentioned in the provided context.
* **Infrastructure:** None explicitly mentioned in the provided context.
## Implications
UNC2903 demonstrates a focused interest in leveraging misconfigurations or vulnerabilities within cloud environments to compromise metadata services, which can lead to the exfiltration of sensitive credentials or access tokens. This indicates a sophisticated understanding of cloud infrastructure security weaknesses.
## Mitigations
* Implement robust controls to prevent Server-Side Request Forgery (SSRF).
* Employ protection mechanisms specifically targeting Instance Metadata Service (IMDS) abuse, such as utilizing IMDSv2 requiring a session token, and strict network controls limiting access to the metadata endpoint (`169.254.169.254`).