H3XAOperational intelligence
Live analytical pictureEvidence before assessment
Threat intelligence / Malware

WellMail

[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)

Malware
TypeMalware
External ID—
First seen2026-08-14
Last seen2026-08-14

Confidence

—

[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)

Labels

malware
10 recorded

Relationships

uses
from APT29
Group
uses
to Archive Collected Data
Technique
uses
to Asymmetric Cryptography
Technique
uses
to Data from Local System
Technique
uses
to Deobfuscate/Decode Files or Information
Technique
uses
to Ingress Tool Transfer
Technique
uses
to Non-Application Layer Protocol
Technique
uses
to Non-Standard Port
Technique
uses
to System Network Configuration Discovery
Technique
uses
to System Owner/User Discovery
Technique
3 external

References

mitre-attack
S0515
open
CISA WellMail July 2020
https://us-cert.cisa.gov/ncas/analysis-reports/ar20-198c
open
NCSC APT29 July 2020
https://www.ncsc.gov.uk/files/Advisory-APT29-targets-COVID-19-vaccine-development-V1-1.pdf
open
Continue into the dataIntelligence explorerHow to read the graphEvidence & provenance