Loading skill
Install any skill in seconds. Free to start, no credit card required.
Get Started Free →cyberstrikeus/T1071.003_mail-protocols
Adversaries may communicate using application layer protocols associated with electronic mail delivery to avoid detection/network filtering by blending in with existing traffic.
Passed 21 of 23 test cases with the skill, and 15 of 23 without it.
and 4 more in the full report
6 fixed15 passed either way2 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 6 test cases the skill fixed. Same model, same prompt, with and without the skill.
What academic institution paper is listed among the primary technical references for covert C2 channels in T1071.003?
| Checked | Without skill | With skill |
|---|---|---|
| References the University of Birmingham research paper. | Missed | Passed |
The instructions your model reads when the skill loads.
Sub-technique of: T1071
Adversaries may communicate using application layer protocols associated with electronic mail delivery to avoid detection/network filtering by blending in with existing traffic. Commands to the remote system, and often the results of those commands, will be embedded within the protocol traffic between the client and server.
Protocols such as SMTP/S, POP3/S, and IMAP that carry electronic mail may be very common in environments. Packets produced from these protocols may have many fields and headers in which data can be concealed. Data could also be concealed within the email messages themselves. An adversary may abuse these protocols to communicate with systems under their control within a victim network while also mimicking normal, expected traffic.
Platforms: Linux, macOS, Network Devices, Windows
Identify Attack Surface: Determine if the target environment is susceptible to Mail Protocols by examining the target platforms (Linux, macOS, Network Devices).
Assess Existing Defenses: Review whether mitigations for T1071.003 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 15 / 23 without
Published skills whose descriptions closely match this one, with their headline benchmark lift.
More skills from the same source and nearby in the registry, with their headline benchmark lift.