$100M Underground Remittance Network Using Crypto, WeChat Dismantled In South Korea

bitcoinistPublished on 2026-01-20Last updated on 2026-01-20

Abstract

South Korean authorities have dismantled an underground remittance network that moved approximately $102 million (150 billion won) across borders using mobile payment apps like WeChat Pay and Alipay and cryptocurrencies. The scheme, which operated from September 2021 to June 2023, involved collecting funds from customers via the apps, converting the money into crypto abroad, and then cashing it out into South Korean bank accounts after transferring the digital assets to local wallets. To evade detection, the group disguised the transactions as payments for common services such as cosmetic surgery, study abroad fees, and trade-related costs. Three Chinese nationals have been arrested and face charges under foreign exchange laws. The case highlights the growing use of combined traditional and digital payment channels for illicit fund movements, prompting South Korea to strengthen regulations on crypto exchanges and mobile wallets.

Seoul investigators say they have disrupted a secret money-transfer network that moved roughly 150 billion won—about $102 million—into and out of South Korea using a mix of mobile payment apps and cryptocurrencies.

Reports say three people have been formally accused under the country’s foreign exchange laws after a probe that traced the scheme over several years.

How Money Moved Through Apps

According to the Korea Customs Service, the group collected money from customers using platforms like WeChat Pay and Alipay, then used those funds to buy virtual coins abroad.

Those coins were shifted into digital wallets in Korea and converted to Korean won through many bank accounts.

The pattern was basic and careful. Cash or mobile transfers arrived from overseas. Crypto purchases followed in multiple countries to avoid any one regulator seeing the full trail.

Finally, the funds were funneled into local accounts under different names. This took place over a long window, from September of 2021 until June of last year, investigators say.

Bitcoin is currently trading at $92,895. Chart: TradingView

Covering Tracks With Everyday Costs

According to reports, the ring hid the origin of money by dressing transfers up as ordinary expenses — payments for cosmetic surgery, fees for overseas study, and trade-related charges. Those labels made the flows look normal on paper and helped the group slip past routine checks.

Bank transfers were layered with small, seemingly legitimate payments. That made suspicious activity harder to spot until customs officers pieced together patterns across accounts and platforms.

At that point, the scope became clear: these were not isolated transfers but a linked series of transactions designed to wash large sums.

Image: Getty Images

What Authorities Recovered

Investigators arrested and referred three Chinese nationals for prosecution, saying the suspects handled the bulk of the scheme’s operations.

Records show almost 150 billion won was moved in the period under review. Authorities have opened cases under the foreign exchange transactions law and are seeking to trace the remaining funds.

The case underlines how easy it can be for cross-border payment tools and crypto markets to be used together.

Regulators in Korea have been tightening rules for both mobile wallets and exchanges in recent months, and courts have allowed seizures of crypto assets in criminal probes. That legal backdrop helped the customs office act when the patterns surfaced.

Featured image from Dao Insights, chart from TradingView

Related Questions

QWhat was the total amount of money moved by the underground remittance network in South Korea, and what was the equivalent in US dollars?

AThe network moved approximately 150 billion won, which is equivalent to about $102 million.

QWhich mobile payment apps and methods were used by the group to collect money from customers?

AThe group used platforms like WeChat Pay and Alipay to collect money from customers.

QHow did the group disguise the illegal money transfers to avoid detection by authorities?

AThey disguised transfers as ordinary expenses such as payments for cosmetic surgery, fees for overseas study, and trade-related charges to make them appear normal and avoid routine checks.

QWhat was the role of cryptocurrencies in this underground remittance network?

AThe group used the collected funds to buy virtual coins abroad, which were then transferred to digital wallets in South Korea and converted to Korean won through multiple bank accounts.

QHow many people were formally accused in connection with this scheme, and what nationality were the main suspects?

AThree Chinese nationals were arrested and referred for prosecution, as they handled the bulk of the scheme's operations.

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