`0x123f12517f1643f0a8897776989f8d440aa76764`

0x123f12517f1643f0a8897776989f8d440aa76764 is a smart contract address that one published source reports in connection with EtherHiding / UNC5342 and unclustered DPRK activity, which public reporting attributes to North Korea (DPRK). It is cited here from Atos Threat Research Center. The report is dated 2026-04-14.

On-chain links

C2 hosts this address pointed malware at, 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. A host whose verdict is decoy was written between real values and is not C2. See the EtherHiding Tracker.

C2 host	Transaction	Verdict	Network	Provider	Country	Registered	First written	Last written
`mymexico.socia`	Etherscan	placeholder					2026-01-12	2026-01-12
`mymexico.social`	Etherscan	Malicious				2026-01-03	2026-01-12	2026-01-12

Write transactions

Every transaction that wrote a value to this contract, newest first, as read from Etherscan on 2026-10-20. Values are shown as the operator wrote them; an encrypted one has not been decrypted.

Date	Transaction	Sender	Value written
2026-01-12	`0x6c3485ee9cfc…`	`0x285453d4cf33…`	`https://mymexico.social`
2026-01-12	`0x10ac1ad48e02…`	`0x285453d4cf33…`	`https://mymexico.socia`
2026-01-12	`0xb2c147264d2a…`	`0x285453d4cf33…`	`https://mymexico.social/`

smart contract address EtherHiding / UNC5342DPRK (cluster unattributed) CURATED

First seen 2026-04-14 · last seen 2026-04-14

Source

As printed:

0x123f12517f1643f0a8897776989f8d440aa76764

Notes:

Ethereum contract that EtherRAT reads to find its command-and-control server, listed in Atos's appendix as created 2026-01-12 with 3 setString calls when the appendix was compiled. It stores a mapping from operator wallet to URL: the operator writes the C2 with setString(string) and the implant reads it with getString(address) (selector 0x7d434425). On 2026-10-03 getString(0x285453d4cf33bfdb3e44c207c7534cbd7a23afcd) against a public Ethereum node returned a URL, confirming the contract has this shape; the stored values are not recorded here because operators park the resolver on well-known domains between sessions. Atos names no actor of its own: it repeats Sysdig's link between EtherRAT and the DPRK Contagious Interview tooling and notes code overlap with a tool eSentire attributed to an Iranian group, so this entry is filed under the unattributed DPRK label.
EtherRAT-appendixes (IoCs/wallets_and_contracts.csv) — Atos Threat Research Center · published 2026-04-14 · pulled 2026-10-03

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Cited by the same report: EtherRAT-appendixes (IoCs/wallets_and_contracts.csv)

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