`66.181.166.15`

66.181.166.15 is an IP address that 4 published sources report in connection with APT38 and Lazarus Group activity, which public reporting attributes to North Korea (DPRK). It is cited here from ClearSky Cyber Security, Uppsala Security and With Secure. The earliest of those reports is dated 2020-06-24 and the most recent 2026-10-18.

ip address APT38 Lazarus Group MATCHED IN SOURCE

First seen 2020-06-24 · last seen 2026-10-18

Network

Kind	mobile carrier
Network	MCS Com Co Ltd (Univision LLC)
Announced by	AS17882 Univision LLC
Country	Mongolia
Flags	mobile carrier

Looked up 2026-09-21 at ip-api.com.

Sources

…Page | 17 June 20 20 IP addresses 66.181.166.11 78.94.213.101 203.144.133.42 69.64.54.215 210.212.148.30 66.181.166.15 23.65.190.86 70.184.87.103 91.98.251.208 59.127.150.197 190.85.159.46 190.81.34.163 191.215.16.82 91.140.255.62…
A Threat Actor Targeting Cryptocurrency Exchanges — ClearSky Cyber Security · published 2020-06-24 · pulled 2026-09-12
…mskpupdate.publicvm.com d0c500c37ae9f9e3657d26272722b997 googledrive.publicvm.com 629f6a17bea4c386aee3dfec2ed6ec2c 66.181.166.15 5bb049c31f5fb8c4a076def3efb91177 d3d32225bf893ccc62dee9d833fe04f2 2. Comparison of indicators ( I O C ’ s ) between…
Attributing CryptoCore Attacks Against Crypto Exchanges to LAZARUS (North Korea) — ClearSky Cyber Security · published 2021-05-25 · pulled 2026-09-12
…These findings led us to believe that entity 128.201.64.194 is possibly a compromised Mikrotik router. While entities 203.144.133.42 and 66.181.166.15 have multiple identical services running such as Microsoft IIS, MS-SQL, Microsoft HTTP-API and RDP/VNC as of writing this article.…
APT Group Targeting Cryptocurrency Industries — Debunked — Uppsala Security · under “C2 Server Infrastructure” · published 2020-09-18 · pulled 2026-09-12
…-w Hidden -ep Bypass -file C:Users\<USER>\AppData\Local\Temp\usoclient.ps1 66.181.166.15:8080/uc 188652471 Detection As PowerShell is also a common tool among system administrators, a simple detection of its execution will…
Catching Lazarus: Threat Intelligence to Real Detection Logic - Part One — With Secure · under “T1059.001 – Command and Scripting Interpreter: PowerShell” · published 2020-09-25 · pulled 2026-09-12

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Related indicators

Cited by the same report: A Threat Actor Targeting Cryptocurrency Exchanges

ClearSky Cyber Security lists 34 other indicators in this source. 5 are shown, chosen across types.

All 35 indicators from this source

Cited by the same report: Attributing CryptoCore Attacks Against Crypto Exchanges to LAZARUS (North Korea)

ClearSky Cyber Security lists 1 other indicator in this source.

Cited by the same report: APT Group Targeting Cryptocurrency Industries — Debunked

Uppsala Security lists 3 other indicators in this source.