Description
[RainyDay](https://attack.mitre.org/software/S0629) is a backdoor tool that has been used by [Naikon](https://attack.mitre.org/groups/G0019) since at least 2020.(Citation: Bitdefender Naikon April 2021)
External References
Techniques Used by This Malware
- T1005 — Data from Local System
- T1007 — System Service Discovery
- T1008 — Fallback Channels
- T1027.013 — Encrypted/Encoded File
- T1036.004 — Masquerade Task or Service
- T1036.005 — Match Legitimate Resource Name or Location
- T1053.005 — Scheduled Task
- T1057 — Process Discovery
- T1059.003 — Windows Command Shell
- T1070.004 — File Deletion
- T1071.001 — Web Protocols
- T1074.001 — Local Data Staging
- T1083 — File and Directory Discovery
- T1090 — Proxy
- T1095 — Non-Application Layer Protocol
- T1105 — Ingress Tool Transfer
- T1106 — Native API
- T1113 — Screen Capture
- T1140 — Deobfuscate/Decode Files or Information
- T1543.003 — Windows Service
- T1555.003 — Credentials from Web Browsers
- T1555.004 — Windows Credential Manager
- T1567.002 — Exfiltration to Cloud Storage
- T1573.001 — Symmetric Cryptography
- T1574.001 — DLL