Alleged SpyEye Seller ‘Bx1’ Extradited to U.S.

A 24-year-old Algerian man arrested in Thailand earlier this year on suspicion of co-developing and selling the infamous SpyEye banking trojan was extradited this week to the United States, where he faces criminal charges for allegedly hijacking bank accounts at more than 200 financial institutions.

Bx1's profile page on

Bx1’s profile page on

Hamza Bendelladj, who authorities say used the nickname “Bx1” online, is accused of operating a botnet powered by SpyEye, a complex banking trojan that he also allegedly sold and helped develop. Bendelladj was arraigned on May 2, 2013 in Atlanta, where he is accused of leasing a server from a local Internet company to help manage his SpyEye botnet.

A redacted copy of the indictment (PDF) against Bendelladj was unsealed this week; the document says Bendelladj developed and customized components of SpyEye that helped customers steal online banking credentials and funds from specific banks.

The government alleges that as Bx1, Bendelladj was an active member of, an underground fraud forum that I’ve covered in numerous posts on this blog. Bx1’s core focus in the community was selling “web injects” — custom add-ons for SpyEye that can change the appearance and function of banking Web sites as displayed in a victim’s Web browser. More specifically, Bx1 sold a type of web inject called an automated transfer system or ATS; this type of malware component was used extensively with SpyEye — and with its close cousin the ZeuS Trojan — to silently and invisibly automate the execution of bank transfers just seconds after the owners of infected PCs logged into their bank accounts.

“Zeus/SpyEYE/Ice9 ATS for Sale,” Bx1 announced in a post on thread dated Jan. 16, 2012:

“Hey all. I’m selling private ATS’s. Working and Tested.

We got  IT / DE / AT / UK / US / CO / NL / FR / AU

Contact me for bank.

can develop bank ATS from your choice.”

The government alleges that Bx1/Bendelladj made millions selling SpyEye, SpyEye components and harvesting financial data from victims in his own SpyEye botnet. But Bx1 customers and associates on expressed strong doubts about this claim, noting that someone who was making that kind of money would not blab or be as open about his activities as Bx1 apparently was.


Darkode discusses Symlink’s arrest

In my previous post on Bx1, I noted that he reached out to me on several occasions to brag about his botnet and to share information about his illicit activities. In one case, he even related a story about breaking into the networks of a rival ATS/web inject developer named Symlink. Bx1 said he told Symlink to expect a visit from the local cops if he didn’t pay Bx1 to keep his mouth shut. It’s not clear whether that story is true or if Symlink ever paid the money; in any case, Symlink was arrested on cybercrime charges in Oct. 2012 by authorities in Moldova.

The redacted portions of the government indictment of Bendelladj are all references to Bx1’s partner — the author of the SpyEye Trojan and a malware developer known in the underground alternatively as “Gribodemon” and “Harderman.” In a conference call with reporters today, U.S. Attorney Sally Quillian Yates said the real name of the principal author of SpyEye was redacted from the indictment because he had not yet been arrested.

Interestingly, several lengthy discussion threads on show that Bx1 himself tried to warn fellow forum members that he had been approached by individuals either working for the FBI or acting as intermediaries for U.S. federal law enforcement.

In another thread posted Jan. 21, 2011 and titled “Feds, Feds, Feds,” Bx1 pastes an excerpt from an online chat with an interloper who describes himself as an information broker who is seeking clues about the identities of Gribodemon and a hacker who went by the screen name “jam3s,” and who is suspected of leaking the source code to the ZeuS Trojan. In that thread, Bx1 urges fellow forum members to “double encrypt” their computer hard drives and to “make a contact with a good lawyer.” Most of the forum members simply dismiss Bx1 as paranoid.

On Nov. 29, Bx1 posted an urgent thread on titled, “FBI are after some members.”

“I spoke today with a friend working on FBI. he said there is an operation to find some hackers, we spoke deeply and he mention darkode. so guys, please be careful.” [see screen shot below]

If convicted, Bendelladj faces a maximum sentence of up to 30 years is prison on charges of conspiracy to commit wire and bank fraud, as well as sentences of five to 20 years for related charges. He also faces fines of up to $14 million.

Less than a month before his arrest, Bx1 tries to warn fellow members of the FBI's interest.

Less than a month before his arrest, Bx1 tries to warn fellow members of the FBI’s interest.

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