`https://maskasd.com/8555575039`

https://maskasd.com/8555575039 is a payload URL that one published source reports in connection with APT38 activity, which public reporting attributes to North Korea (DPRK). It is cited here from Microsoft. The report is dated 2026-06-18.

payload url APT38 MATCHED IN SOURCE

First seen 2026-06-18 · last seen 2026-06-18

Source

…URL Post Compromise PowerShell backdoor download endpoint maskasd.com Domain Post Compromise C2 beacon domain https://maskasd.com/8555575039 URL Post Compromise C2 beacon endpoint File indicators Indicator Type Description…
From package to postinstall payload: Inside the Mastra npm supply chain compromise by Sapphire Sleet | Microsoft Security Blog — Microsoft · under “Indicators of compromise (IOC)” · published 2026-06-18 · pulled 2026-10-03

Find this indicator in the index, or see every payload URL this site holds under Payload URLs in the browse listing.

Related indicators

Cited by the same report: From package to postinstall payload: Inside the Mastra npm supply chain compromise by Sapphire Sleet | Microsoft Security Blog

Microsoft lists 11 other indicators in this source.