WellMail

MITRE
Malware Type:
Other
First seen:
Unknown
Last seen:
Unknown
Details:

[WellMail](https://attack.mitre.org/software/S0515) is a lightweight malware written in Golang used by [APT29](https://attack.mitre.org/groups/G0016), similar in design and structure to [WellMess](https://attack.mitre.org/software/S0514).(Citation: CISA WellMail July 2020)(Citation: NCSC APT29 July 2020)

Associated Techniques (9)
ID ATT&CK Tactics
T1005 Data from Local System -
T1016 System Network Configuration Discovery -
T1033 System Owner/User Discovery -
T1095 Non-Application Layer Protocol -
T1105 Ingress Tool Transfer -
T1140 Deobfuscate/Decode Files or Information -
T1560 Archive Collected Data -
T1571 Non-Standard Port -
T1573.002 Asymmetric Cryptography -
Used by Actors (1)
Metadata
ID: 426
Created: 13/01/2026 17:48
Updated: 08/03/2026 16:00