Malware: QUIETEXIT

Description

[QUIETEXIT](https://attack.mitre.org/software/S1084) is a novel backdoor, based on the open-source Dropbear SSH client-server software, that has been used by [APT29](https://attack.mitre.org/groups/G0016) since at least 2021. [APT29](https://attack.mitre.org/groups/G0016) has deployed [QUIETEXIT](https://attack.mitre.org/software/S1084) on opaque network appliances that typically don't support antivirus or endpoint detection and response tools within a victim environment.(Citation: Mandiant APT29 Eye Spy Email Nov 22)

External References

• mitre-attack
• Mandiant APT29 Eye Spy Email Nov 22

Techniques Used by This Malware

• T1008 — Fallback Channels
• T1036.005 — Match Legitimate Resource Name or Location
• T1071 — Application Layer Protocol
• T1090.002 — External Proxy
• T1095 — Non-Application Layer Protocol

APT Groups Using This Malware

• APT29