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Get Started Free →cyberstrikeus/T1021.004_ssh
Adversaries may use Valid Accounts to log into remote machines using Secure Shell (SSH).
Passed 21 of 23 test cases with the skill, and 11 of 23 without it.
and 9 more in the full report
10 fixed11 passed either way2 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 10 test cases the skill fixed. Same model, same prompt, with and without the skill.
To prevent unauthorized SSH logins, sysadmins typically disable root password login in sshd_config. Which specific MITRE mitigation ID governs restricting which user accounts are permitted to authenticate via SSH?
| Checked | Without skill | With skill |
|---|---|---|
| Cites M1018 (User Account Management) for limiting authorized SSH user accounts. | Missed | Passed |
The instructions your model reads when the skill loads.
Sub-technique of: T1021
Adversaries may use Valid Accounts to log into remote machines using Secure Shell (SSH). The adversary may then perform actions as the logged-on user.
SSH is a protocol that allows authorized users to open remote shells on other computers. Many Linux and macOS versions come with SSH installed by default, although typically disabled until the user enables it. On ESXi, SSH can be enabled either directly on the host (e.g., via vim-cmd hostsvc/enable_ssh) or via vCenter. The SSH server can be configured to use standard password authentication or public-private keypairs in lieu of or in addition to a password. In this authentication scenario, the user’s public key must be in a special file on the computer running the server that lists which keypairs are allowed to login as that user (i.e., SSH Authorized Keys).
Platforms: ESXi, Linux, macOS
Identify Attack Surface: Determine if the target environment is susceptible to SSH by examining the target platforms (ESXi, Linux, macOS).
Assess Existing Defenses: Review whether mitigations for T1021.004 are in place. If defenses are absent or misconfigured, this technique may be exploitable.
Execute Test: Use tools and methods described in the MITRE ATT&CK page and external references below.
Note: No Atomic Red Team tests available for this technique. See Atomic Red Team GitHub for updates.
test cases passed, vs 11 / 23 without
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