Description
Adversaries may target the Management Information Base (MIB) to collect and/or mine valuable information in a network managed using Simple Network Management Protocol (SNMP).
The MIB is a configuration repository that stores variable information accessible via SNMP in the form of object identifiers (OID). Each OID identifies a variable that can be read or set and permits active management tasks, such as configuration changes, through remote modification of these variables. SNMP can give administrators great insight in their systems, such as, system information, description of hardware, physical location, and software packages(Citation: SANS Information Security Reading Room Securing SNMP Securing SNMP). The MIB may also contain device operational information, including running configuration, routing table, and interface details.
Adversaries may use SNMP queries to collect MIB content directly from SNMP-managed devices in order to collect network information that allows the adversary to build network maps and facilitate future targeted exploitation.(Citation: US-CERT-TA18-106A)(Citation: Cisco Blog Legacy Device Attacks)
Platforms
Mitigations (6)
Software ConfigurationM1054
Allowlist MIB objects and implement SNMP views.(Citation: Cisco Securing SNMP)
Update SoftwareM1051
Keep system images and software updated and migrate to SNMPv3.(Citation: Cisco Blog Legacy Device Attacks)
Encrypt Sensitive InformationM1041
Configure SNMPv3 to use the highest level of security (authPriv) available.(Citation: US-CERT TA17-156A SNMP Abuse 2017)
Network Intrusion PreventionM1031
Configure intrusion prevention devices to detect SNMP queries and commands from unauthorized sources.(Citation: US-CERT-TA18-106A)
Network SegmentationM1030
Segregate SNMP traffic on a separate management network.(Citation: US-CERT TA17-156A SNMP Abuse 2017)
Filter Network TrafficM1037
Apply extended ACLs to block unauthorized protocols outside the trusted network.(Citation: US-CERT TA17-156A SNMP Abuse 2017)
References
- Michael Stump. (2003). Information Security Reading Room Securing SNMP: A Look atNet-SNMP (SNMPv3). Retrieved October 19, 2020.
- US-CERT. (2018, April 20). Alert (TA18-106A) Russian State-Sponsored Cyber Actors Targeting Network Infrastructure Devices. Retrieved October 19, 2020.
- Omar Santos. (2020, October 19). Attackers Continue to Target Legacy Devices. Retrieved October 20, 2020.
- Cisco. (2008, June 10). Identifying and Mitigating Exploitation of the SNMP Version 3 Authentication Vulnerabilities. Retrieved October 19, 2020.
Frequently Asked Questions
What is T1602.001 (SNMP (MIB Dump))?
T1602.001 is a MITRE ATT&CK technique named 'SNMP (MIB Dump)'. It belongs to the Collection tactic(s). Adversaries may target the Management Information Base (MIB) to collect and/or mine valuable information in a network managed using Simple Network Management Protocol (SNMP). The MIB is a configurati...
How can T1602.001 be detected?
Detection of T1602.001 (SNMP (MIB Dump)) typically involves monitoring system logs, network traffic, and endpoint telemetry. Use SIEM rules, EDR solutions, and behavioral analytics to identify suspicious activity associated with this technique.
What mitigations exist for T1602.001?
There are 6 documented mitigations for T1602.001. Key mitigations include: Software Configuration, Update Software, Encrypt Sensitive Information, Network Intrusion Prevention, Network Segmentation.
Which threat groups use T1602.001?
While specific threat group attribution may vary, this technique has been observed in various real-world attacks. Check the MITRE ATT&CK website for the latest threat intelligence.