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TTY Logs and the Data it Captures, (Sun, Oct 4th)

0
Low
News
Published: 10/05/2026 (10/05/2026, 00:15:00 UTC)
Source: SANS ISC Handlers Diary

Description

This report describes an experiment involving the collection and analysis of TTY logs from actors or bots that successfully log into a DShield sensor. The logs capture commands executed by these actors, which are then parsed and sent daily to the DShield SIEM for correlation and further analysis. The data includes hashes of commands such as crontab entries executed by thousands of different IP addresses over a 90-day period. This activity provides insight into attacker behavior but does not describe a specific vulnerability or exploit.

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 10/05/2026, 00:18:25 UTC

Technical Analysis

The content details a method for collecting and analyzing TTY logs from unauthorized logins on a DShield sensor. A script parses these logs, extracting command hashes and sending them to a SIEM system for correlation. The analysis includes identifying repeated commands executed by numerous distinct actors over a period of time, helping to understand attacker tactics and infrastructure. The report includes examples of queries used to summarize the data and lists top IP addresses associated with these activities. No specific vulnerability or exploit is described.

Potential Impact

There is no direct security impact or vulnerability described in this content. The information pertains to monitoring and analyzing attacker activity rather than a flaw that can be exploited. It provides defenders with intelligence on attacker behavior but does not indicate a compromise or risk to the DShield sensor itself.

Defensive Guidance

No mitigation is required as this content does not describe a vulnerability or active threat. The vendor or source does not indicate any action needed. The described process is a defensive monitoring technique.

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Technical Details

Classification
{"confidence":0.3,"severitySource":"default","classifier":"rss-v2"}
Article Source
{"url":"https://isc.sans.edu/diary/rss/33396","fetched":true,"fetchedAt":"2026-10-05T00:18:22.407Z","wordCount":368}

Threat ID: 6ac2ecce2cdf04f65667ca44

Added to database: 10/05/2026, 00:18:22 UTC

Last enriched: 10/05/2026, 00:18:25 UTC

Last updated: 10/05/2026, 05:33:23 UTC

Views: 7

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