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139.99.66.103

139.99.66.103 is an IP address that one published source reports in connection with APT38 activity, which public reporting attributes to North Korea (DPRK). It is cited here from SentinelOne. The report is dated 2024-11-07.

ip address APT38 MATCHED IN SOURCE

First seen 2024-11-07 · last seen 2024-11-07

Network

Looked up 2026-09-21 at ip-api.com. A hosting range is not evidence on its own.

Source

• …Dropper Macho x86_64 IP Addresses 23.254.253.75 45.61.128.122 45.61.135.105 45.61.140.26 139.99.66.103 144.172.74.23 144.172.74.141 172.86.102.98 172.86.108.47 216.107.136.10 Domains…

  BlueNoroff Hidden Risk | Threat Actor Targets Macs with Fake Crypto News and Novel Persistence | SentinelOne — SentinelOne · under “Indicators of Compromise” · published 2024-11-07 · pulled 2026-09-12

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Related indicators

Cited by the same report: BlueNoroff Hidden Risk | Threat Actor Targets Macs with Fake Crypto News and Novel Persistence | SentinelOne

SentinelOne lists 10 other indicators in this source.

• 05c178891ca1e65af53bbcfdbec573da3f74d176 file hash
• 144.172.74.141 IP address
• 144.172.74.23 IP address
• 172.86.102.98 IP address
• 172.86.108.47 IP address
• 216.107.136.10 IP address
• 23.254.253.75 IP address
• 45.61.128.122 IP address
• 45.61.135.105 IP address
• 45.61.140.26 IP address