Adversaries may exploit software vulnerabilities in an attempt to collect credentials. Exploitation of a software vulnerability occurs when an adversary takes advantage of a programming error in a program, service, or within the operating system software or kernel itself to execute adversary-controlled code.
Credentialing and authentication mechanisms may be targeted for exploitation by adversaries as a means to gain access to useful credentials or circumvent the process to gain authenticated access to systems. One example of this is MS14-068, which targets Kerberos and can be used to forge Kerberos tickets using domain user permissions.(Citation: Technet MS14-068)(Citation: ADSecurity Detecting Forged Tickets) Another example of this is replay attacks, in which the adversary intercepts data packets sent between parties and then later replays these packets. If services don't properly validate authentication requests, these replayed packets may allow an adversary to impersonate one of the parties and gain unauthorized access or privileges.(Citation: Bugcrowd Replay Attack)(Citation: Comparitech Replay Attack)(Citation: Microsoft Midnight Blizzard Replay Attack)
Such exploitation has been demonstrated in cloud environments as well. For example, adversaries have exploited vulnerabilities in public cloud infrastructure that allowed for unintended authentication token creation and renewal.(Citation: Storm-0558 techniques for unauthorized email access)
Exploitation for credential access may also result in Privilege Escalation depending on the process targeted or credentials obtained.
View in MITRE ATT&CK®| Capability ID | Capability Description | Mapping Type | ATT&CK ID | ATT&CK Name | Notes |
|---|---|---|---|---|---|
| artifact_analysis | Artifact Analysis | technique_scores | T1212 | Exploitation for Credential Access |
Comments
Artifact Analysis performs vulnerability scans on artifacts in Artifact Registry or Container Registry (deprecated). When Artifact Analysis is deployed, it can detect known vulnerabilities in various OS packages that could be used to escalate privileges and execute adversary-controlled code (e.g., Debian, Ubuntu, Alpine, RHEL, CentOS, National Vulnerability Database). Due to the medium threat detection coverage and temporal factor, the control was scored as partial.
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| confidential_vm | Confidential VM | technique_scores | T1212 | Exploitation for Credential Access |
Comments
Confidential VM main memory encryption is performed using dedicated hardware within the memory controllers. Confidential VM generates encryption keys in dedicated hardware which is inaccessible to the hypervisor, protecting against Exploitation for Credential Access from outside the VM.
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| google_secops | Google Security Operations | technique_scores | T1212 | Exploitation for Credential Access |
Comments
Google Security Ops triggers alerts based on credential exploit attempts (e.g., read /dev/cmdb/sslvpn_websession file, this file contains login and passwords in (clear-text)).
This technique was scored as minimal based on low or uncertain detection coverage factor.
https://github.com/chronicle/detection-rules/blob/783e0e5947774785db1c55041b70176deeca6f46/soc_prime_rules/proactive_exploit_detection/webserver/cve_2018_13379_fortigate_ssl_vpn_arbitrary_file_reading.yaral
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| policy_intelligence | Policy Intelligence | technique_scores | T1212 | Exploitation for Credential Access |
Comments
Policy Intelligence role recommendations generated by IAM Recommender help admins remove unwanted access to GCP resources by using machine learning to make smart access control recommendations. With Recommender, security teams can automatically detect overly permissive access and rightsize them based on similar users in the organization and their access patterns. This control may mitigate adversaries that try to perform privilege escalation via permission levels and software exploitation.
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| vm_manager | VM Manager | technique_scores | T1212 | Exploitation for Credential Access |
Comments
VM Manager can apply on-demand and scheduled patches via automated patch deployment. This can remediate OS and software vulnerabilities that could otherwise be exploited. Since VM Manager doesn't directly prevent exploitation of active vulnerabilities (including zero day vulnerabilities) this control has resulted in a score of Partial.
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| Capability ID | Capability Description | Mapping Type | ATT&CK ID | ATT&CK Name | Notes |
|---|---|---|---|---|---|
| amazon_inspector | Amazon Inspector | technique_scores | T1212 | Exploitation for Credential Access |
Comments
Amazon Inspector can detect known vulnerabilities on various Windows and Linux endpoints. Furthermore, the Amazon Inspector Best Practices assessment package can assess security controls for "Enable Address Space Layout Randomization (ASLR)" and "Enable Data Execution Prevention (DEP)" that makes it more difficult for an attacker to exploit vulnerabilities in software. This information can be used to patch, isolate, and remove vulnerable software and endpoints. Amazon Inspector does not directly protect against exploitation and it is not effective against zero-day attacks, vulnerabilities with no available patch, and software that may not be analyzed by the scanner. As a result, the score is capped at Partial.
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| aws_config | AWS Config | technique_scores | T1212 | Exploitation for Credential Access |
Comments
The "ec2-managedinstance-applications-blacklisted" managed rule verifies that a pre-defined list of applications are not installed on specified managed instances. It can be used to identify the presence of vulnerable applications (prompting removal before they can be exploited) and/or to identify the presence of allowed packages below a minimum version (prompting updates before they can be exploited). The "ec2-managedinstance-platform-check" managed rule verifies that managed instances are running desired platform types, including using a desired version (as opposed to an out-of-date one).Both can reduce instances' attack surface for adversary exploitation, including for credential access.
All of these are run on configuration changes. Coverage factor is partial for these rules, since they are specific to a subset of the available AWS services and will only protect against certain forms of identifiable exploitation, resulting in an overall score of Partial.
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| aws_secrets_manager | AWS Secrets Manager | technique_scores | T1212 | Exploitation for Credential Access |
Comments
This control may protect against exploitation for credential access by removing credentials and secrets from applications that can be exploited and requiring authenticated API calls to retrieve those credentials and secrets.
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| aws_security_hub | AWS Security Hub | technique_scores | T1212 | Exploitation for Credential Access |
Comments
AWS Security Hub reports on EC2 instances that are missing security patches for vulnerabilities which could enable an adversary to exploit vulnerabilities through the attack lifecycle. AWS Security Hub provides this detection with the following managed insight.
EC2 instances that have missing security patches for important vulnerabilities
This is scored as Partial because the checks associated with Security Hub would only report on missing patches for known vulnerabilities. It doesn't not cover zero-day vulnerabilities.
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