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2.56.123.203

2.56.123.203 is an IP address that 2 published sources report in connection with EtherHiding / UNC5342 and Contagious Interview activity, which public reporting attributes to North Korea (DPRK). It is cited here from Chollima Hunter (on-chain observation) and Ransom-ISAC. The earliest of those reports is dated 2026-09-25 and the most recent 2026-10-22.

On-chain links

EtherHiding addresses that pointed malware at this host, newest first. Dates are when the value was written on-chain, and Transaction opens the one that first wrote it; a row without one is a tie a cited report states. See the EtherHiding Tracker.

ip address EtherHiding / UNC5342Contagious Interview CURATED

First seen 2026-09-25 · last seen 2026-10-22

Network

Looked up 2026-10-26 at ip-api.com. A hosting range is not evidence on its own.

Sources

• Command-and-control address named in the remote-access and dropper stages the signal address has pointed at since 2026-10-22. The XCTDH loader reads the recipient of each transaction from 0x596dcc9fda875309ff85eba09cf5a97d8c7691bb as packed pointers to BNB Smart Chain transactions, whose inputs carry XOR-encrypted scripts; this site follows the pointers and decodes each stage statically, without running it. Recorded as the address the implant is pointed at, not as a host this site has observed serving anything.

  BNB Smart Chain transaction 0x7160fa9c754bd21a1e218a61921f42f77cecf4653403e7393d074cc4f640131f — Chollima Hunter (on-chain observation) · published 2026-10-22 · pulled 2026-10-26

• Command-and-control address named in the remote-access and dropper stages the signal address has pointed at since 2026-10-22. The XCTDH loader reads the recipient of each transaction from 0x596dcc9fda875309ff85eba09cf5a97d8c7691bb as packed pointers to BNB Smart Chain transactions, whose inputs carry XOR-encrypted scripts; this site follows the pointers and decodes each stage statically, without running it. Recorded as the address the implant is pointed at, not as a host this site has observed serving anything.

  XCTDH Adopts Hash Hiding — Ransom-ISAC · published 2026-09-25 · pulled 2026-10-26

Find this indicator in the index, or see every IP address this site holds under IP addresses in the browse listing.

Related indicators

Cited by the same report: XCTDH Adopts Hash Hiding

Ransom-ISAC lists 19 other indicators in this source. 12 are shown, chosen across types.

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• 0x171b14bb0050171b14bb01bb398eaab6441fbd47 cryptocurrency wallet address
• 0x9d202c824402ca89e9aaccd2390b6f8b332ae743caa1469c695feb2781d56519 cryptocurrency wallet address
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• TCqf6ZkaQD84vYsC2cuu1jRwB6JveTaRrF cryptocurrency wallet address
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All 20 indicators from this source