S0220 Chaos
Chaos is Linux malware that compromises systems by brute force attacks against SSH services. Once installed, it provides a reverse shell to its controllers, triggered by unsolicited packets. 1
| Item | Value |
|---|---|
| ID | S0220 |
| Associated Names | |
| Type | MALWARE |
| Version | 1.1 |
| Created | 18 April 2018 |
| Last Modified | 01 July 2020 |
| Navigation Layer | View In ATT&CK® Navigator |
Techniques Used
| Domain | ID | Name | Use |
|---|---|---|---|
| enterprise | T1110 | Brute Force | Chaos conducts brute force attacks against SSH services to gain initial access.1 |
| enterprise | T1059 | Command and Scripting Interpreter | - |
| enterprise | T1059.004 | Unix Shell | Chaos provides a reverse shell connection on 8338/TCP, encrypted via AES.1 |
| enterprise | T1573 | Encrypted Channel | - |
| enterprise | T1573.001 | Symmetric Cryptography | Chaos provides a reverse shell connection on 8338/TCP, encrypted via AES.1 |
| enterprise | T1104 | Multi-Stage Channels | After initial compromise, Chaos will download a second stage to establish a more permanent presence on the affected system.1 |
| enterprise | T1205 | Traffic Signaling | Chaos provides a reverse shell is triggered upon receipt of a packet with a special string, sent to any port.1 |