Honeypot activity spotted by one of the cybersecurity vendors confirmed that the cryptojacking TeamTNT gang is back on the prowl. The threat actor was first detected in early 2020, targeting cloud environments. However, in late 2021 TeamTNT adversaries tweeted a farewell message, which seemed to be true since the past year’s attacks that were traced back to the gang were automatically generated.
The most recent attacks show TTPs that can be linked to TeamTNT, suggesting that the threat actor is probably back in the threat landscape.
This detection has translations for the following SIEM, EDR & XDR platforms: Microsoft Sentinel, Elastic Stack, Splunk, Humio, Sumo Logic, ArcSight, QRadar, FireEye, LogPoint, SentinelOne, Graylog, Regex Grep, CrowdStrike, Microsoft PowerShell, RSA NetWitness, Chronicle Security, Microsoft Defender ATP, Snowflake, Securonix, Apache Kafka ksqlDB, Carbon Black, Open Distro, and AWS OpenSearch.
The rule is aligned with MITRE ATT&CK® framework v.10, addressing the Resource Development tactic with Compromise Infrastructure (T1584) as the primary technique.
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Security researchers from Aqua Security are behind the honeypots that lured the adversaries in question. The researchers have documented the intrusion attempts attributing them to the TeamTNT group in September 2022, signifying TeamTNT activity renewal. This is the first operation in almost a year since the crypto-mining gang shut shop in the late fall of 2021.
Aqua Security has detected three types of the recent attacks. The one tagged “the Kangaroo attack” is the gang’s “simplest and most dramatic”. Adversaries hit vulnerable Docker Daemons, drop AlpineOS image, download a shell script, and get the Bitcoin solver. Two other types of attack dubbed the “Cronb” and “What Will Be” were launched to deploy coin miners and Tsunami binaries.
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