Mail from the (Velvet) Cybercrime Underground

poledriver

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Mail from the (Velvet) Cybercrime Underground

Over the past six months, “fans” of this Web site and its author have shown their affection in some curious ways. One called in a phony hostage situation that resulted in a dozen heavily armed police surrounding my home. Another opened a $20,000 new line of credit in my name. Others sent more than $1,000 in bogus PayPal donations from hacked accounts. Still more admirers paid my cable bill for the next three years using stolen credit cards. Malware authors have even used my name and likeness to peddle their wares.

But the most recent attempt to embarrass and fluster this author easily takes the cake as the most elaborate: Earlier this month, the administrator of an exclusive cybercrime forum hatched and executed a plan to purchase heroin, have it mailed to my home, and then spoof a phone call from one of my neighbors alerting the local police. Thankfully, I had already established a presence on his forum and was able to monitor the scam in real time and alert my local police well in advance of the delivery.

This would-be smear campaign was the brainchild of a fraudster known variously online as “Fly,” “Flycracker,” and MUXACC1 (muxa is transliterated Russian for “муха” which means “fly”). Fly is the administrator of the fraud forum “thecc[dot]bz,” an exclusive and closely guarded Russian language board dedicated to financial fraud and identity theft.

On July 14, Flycracker posted a new forum discussion thread titled, “Krebs Fund,” in which he laid out his plan: He’d created a bitcoin wallet for the exclusive purpose of accepting donations from other members. The goal: purchase heroin in my name and address from a seller on the Silk Road, an online black market that is only reachable via the Tor network. In the screenshot pictured above, Flycracker says to fellow members:

“Guys, it became known recently that Brian Krebs is a heroin addict and he desperately needs the smack, so we have started the “Helping Brian Fund”, and shortly we will create a bitcoin wallet called “Drugs for Krebs” which we will use to buy him the purest heroin on the Silk Road. My friends, his withdrawal is very bad, let’s join forces to help the guy! We will save Brian from the acute heroin withdrawal and the world will get slightly better!”

Together, forum members raised more than 2 bitcoins – currently equivalent to about USD $200. At first, Fly tried to purchase a gram of heroin from a Silk Road vendor named 10toes, an anonymous seller who had excellent and plentiful feedback from previous buyers as a purveyor of reliably good heroin appropriate for snorting or burning and inhaling (see screnshot below).

Flycracker discussing the purchase of a gram of heroin from Silk Road seller “10toes.”
For some reason, that transaction with 10toes fell through, and Flycracker turned to another Silk Road vendor — Maestro — from whom he purchased a dozen baggies of heroin of “HIGH and consistent quality,” to be delivered to my home in Northern Virginia earlier today. The purchase was made using a new Silk Road account named “briankrebs7,” and cost xxxx bitcoins (price removed).

“12 sacks of heroin [the seller gives 2 free sacks for a 10-sacks order] are on the road, can anyone make a call [to the police] from neighbors, with a record? Seller said the package will be delivered after 3 days, on Tuesday. If anyone calls then please say that drugs are hidden well.”

h-open-600x450.jpg

It’s not every day your enemies deliver drugs to your door. I’m pretty sure they don’t teach you about this stuff in journalism school (not that I went or anything).

Last week, I alerted the FBI about this scheme, and contacted a Fairfax County Police officer who came out and took an official report about it. The cop who took the report just shook his head incredulously, and kept saying he was trying to unplug himself from various accounts online with the ultimate goal of being “off the Internet and Google” by the time he retired. Before he left, the officer said he would make a notation on my report so that any officer dispatched to respond to complaints about drugs being delivered via mail to my home would prompted to review my report.

FOLLOWING THE MONEY

I never doubted Flycracker”s resolve for a minute, but I still wanted to verify his claims about having made the purchase. On that front I received assistance from Sara Meiklejohn, a graduate student at the University of California, San Diego who’s been analyzing the role of bitcoin and anonymity on the Silk Road. Meiklejohn confirmed that the bitcoin wallet linked to in Fly’s forum thread was indeed used to deposit two bitcoins into a purse controlled by anonymous individuals who help manage commerce on the Silk Road.

Meiklejohn and fellow researcher Damon McCoy, an assistant professor of computer science at George Mason University, have been mapping out a network of bitcoin wallets that are used exclusively by the curators of the Silk Road. If you wish to transact with merchants on the Silk Road, you need to fund your account with bitcoins. The act of adding credits appears to be handled by a small number of bitcoin purses.

“All Silk Road purchases are handled internally by Silk Road, which means money trades hands from the Silk Road account of the buyer to the Silk Road account of the seller,” explained Meiklejohn, author of the paper, A Fistful of Bitcoins: Characterizing Payments Among Men with No Names, to be released in October 2013 at the ACM Internet Measurement Conference in Barcelona, Spain.

“These accounts aren’t visible on the bitcoin network though, so the only thing we can even hope to see by looking at the public transactions is when money goes into and comes out of the set of addresses that represent the collective account balances of all silk road users,” Meiklejohn wrote in an email to KrebsOnSecurity. “By manually tagging a handful of silk road addresses (via direct interaction) and then bootstrapping using the heuristic I described to label many more (around 250,000 in total), we are able to achieve this second goal by identifying addresses in the network that are ‘owned’ by silk road.”

In short, we can see that Flycracker’s Krebs Fund wallet was used to deposit 2 bitcoins into a bitcoin wallet controlled by those who maintain the Silk Road marketplace, but we can’t say for certain whether he used that credit to make a purchase.

THE DELIVERY

A thin package containing what appears to be packets of some white powder was delivered to my doorstep Monday, a day earlier than Flycracker had told his buddies that it would arrive. The package was hand-delivered by our local postal carrier, sent in a thin USPS Express Mail envelope that was postmarked from Chicago. Inside was another blank envelope containing a May 2013 copy of Chicago Confidential, a weekly glossy magazine from the Chicago Tribune.

On the back of the magazine, taped to a full-page ad for jewelry from LesterLampert, were a baker’s dozen individually wrapped packets emblazoned with the same black and gold skull motif that was on Maestro’s Silk Road ad. I guess the seller in this case was worried that 12 packets didn’t quite meet the 1 gram measurement for which Flycracker and his goons paid, so he threw in an extra one for good measure.

I wasn’t planning even to touch the individual packages, but curiosity got the best of me. Before calling the cop who took my initial report and letting him that know he could come and retrieve the parcel, I had a look inside one of the packets. But not before donning a particulate face mask and a pair of disposable gloves. Hey, I watch Breaking Bad: Safety first!

Without actually having the substance tested at a lab, I can’t say for certain whether this is talcum powder or the real thing. The cop that came to collect the package said he had a drug field test kit in his squad car but then discovered he was out of the heroin tests (I’m not sure what that says about the heroin problem in Northern Virginia, but I digress). Frankly, I’m willing to give the seller the benefit of the doubt, given that Maestro currently has glowing feedback from almost 100 other buyers on Silk Road. Nevertheless, if I receive any testing results from the local police, I’ll update this blog post.

Just who is this Flycracker mischief maker? That will have to wait for another post. Stay tuned.

http://krebsonsecurity.com/2013/07/mail-from-the-velvet-cybercrime-underground/
 
Wow...that's scary...you never know about pissing people off these days. Would have sucked for the author if he hadn't known ahead of time what they were planning with the heroin delivery.

Since I'm not all that technically savvy (though I have been on TOR before), can someone explain in laymans terms what exactly they were saying about the bitcoins and how the grad student was tracking and figuring out where it went...
 
What an amazing story. It's frightening what people with the knowledge can do on computers.
I just wish I was clever enough to understand how to get some cash into my bank account.
 
Basically, what they are saying is that it's possible to identify when an account sends bitcoin to SR, but not what it's being spent on or if it's being spent at all.
 
Since I'm not all that technically savvy (though I have been on TOR before), can someone explain in laymans terms what exactly they were saying about the bitcoins and how the grad student was tracking and figuring out where it went...

It's not that hard to track Bitcoins, the problem lies in linking them with a certain account and what exactly they were used to buy.
 
I understand that they can be tracked into the wallets and that if someone makes the identity attached to these wallets known then it would be known who was processing the transactions.

What I didn't understand (I know, I'm a lil old and a lil slow) was exactly what he was saying in the following paragraph. I guess I don't understand how he knew the accounts belonged to silk road. Anyone with the knowledge and patience to explain?

"These accounts aren’t visible on the bitcoin network though, so the only thing we can even hope to see by looking at the public transactions is when money goes into and comes out of the set of addresses that represent the collective account balances of all silk road users,” Meiklejohn wrote in an email to KrebsOnSecurity. “By manually tagging a handful of silk road addresses (via direct interaction) and then bootstrapping using the heuristic I described to label many more (around 250,000 in total), we are able to achieve this second goal by identifying addresses in the network that are ‘owned’ by silk road.”

In this paragraph, what does the term 'bootstrapping' refer to in regards to how they tagged and identified the accounts as belonging to SR users?
 
Since I'm not all that technically savvy (though I have been on TOR before), can someone explain in laymans terms what exactly they were saying about the bitcoins and how the grad student was tracking and figuring out where it went...

Bitcoin is a peer-to-peer system, which means that all new information is verified through network propagation rather than by a central server. Basically, when new information is added, it spreads throughout the network and gets written to a ledger known as the block chain once it's been confirmed the details are valid. The information doesn't need to spread through the whole network, just enough of it that the information can be proven to be legit. IIRC that's done by comparing to past block chain data (cryptographically) and also using some sort of statistical mathematics to determine what percentage of the network needs to receive a transaction's details to be able to validate it. Bitcoins are intrinsically linked to a unique address, which are created and stored using a 'wallet' application. The main purpose of the wallet is to sync with the network, download recent block chain information, and hold one or more addresses for bitcoins to be sent from and received to.

So basically, the wallet is like a Bittorrent application but instead of torrents spreading between clients it's transaction data spreading. Much like your IP address is publicized to the rest of the network when you are sharing a torrent file, your unique address identifier is publicized to the rest of the Bitcoin network when you use it. To track bitcoin transactions, all that a person needs to know is the first address to which a bitcoin is being sent then it's possible to look at block chain data to find every other address that has transacted with it. I'm not really positive how TSR operates but AFAIK all transactions are held in escrow at a specific address (or pool of addresses) before the transaction tax gets deducted to pay TSR and the rest of the bitcoin passed along to the dealer.
 
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Bitcoins, what they are spent on, and who or which account actually spent them can all very easily be tracked. IF you want to have your head in the sand and pretend otherwise go for it but you're very naive, and are not living in reality.
 
Bitcoins, what they are spent on, and who or which account actually spent them can all very easily be tracked. IF you want to have your head in the sand and pretend otherwise go for it but you're very naive, and are not living in reality.

Geez, always has to jump in and instead of contributing to the discussion, say something negative or rude! Without having anything to back up the comments...

Thank you thujone for trying to explain. So I guess that though they can see that the BTCs were used at SR it just means they still don't necessarily know who the actual person IRL is. Because if that were the case then SR users would have been history a long time ago...correct?
 
Well, anyone can create an address at any time without credentials, so although the activities to and from an address can be traced the actual owner of the address can't be determined unless or until the owner decides to cash out by converting bitcoins to fiat currency and withdrawing it through the services of an exchange. In any country with strong financial regulations, exchanges require personal identification for transactions to deter money laundering.
 
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