Fake bank transfer emails found to be stealing bitcoins and passwords

News by Roi Perez

The emails were discovered by security firm Cyren who says the malware especially focuses on FTP and web browsing software and other software that could have credential information.

Security firm ?Cyren has alerted of an outbreak of malware which is stealing passwords as well as Bitcoin from crypto-currency wallets on PCs.

It has described it as a versatile keylogger malware that is being delivered as an attachment to phony bank transfer emails, which inform the recipient that they have received a deposit.

The emails are originating primarily from bots in the US and Singapore, and are branded as coming from several different banks, including Emirates NDB and DBS.

The email subjects are typically financial transfer-related, including: “Online wire transfer payment notification”, “Payment update” or “Swift copy”.

The attachments are all named with variations of “Swift” including: swift copy_pdf.ace, swift copy.zip and swift_copy.pdf.gz.

"Swift" here refers to SWIFT codes, used to uniquely identify banks and financial institutions globally for fund transfers, and is evidently used to give the impression that these are genuine interbank transaction reports.

The email attachment is an executable file, most typically with “PDF” in the filename (Swift_Copy.Pdf.exe). Cyren researchers report that after execution it deletes itself and creates a file called “filename.vbs” in the Windows startup folder.  

Every time the victim restarts or logs into his or her PC after signing out, this script runs, executing the malware itself — “filename.exe” located in AppData\Local\Temp\subfolder.

The malware queries the registry for passwords and other sensitive information related to many kinds of software. It especially focuses on FTP and web browsing software and other software that could have credential information.  

It gathers information from all the web browsers on the computer (stored passwords and usernames, history, cookies, cache etc.) and email clients as well.

The malware also searches the computer for crypto-currency wallets to steal.  Among the wallets it tries to find:  Anoncoin, BBQcoin, Bitcoin, Bytecoin, Craftcoin, Devcoin, Digitalcoin, Fastcoin, Feathercoin, Florincoin, Freicoin, I0coin, Infinitecoin, Ixcoin, Junkcoin, Litecoin, Luckycoin, Megacoin, Mincoin, Namecoin, Phoenixcoin, Primecoin, Quarkcoin, Tagcoin, Terracoin, Worldcoin, Yacoin, and Zetacoin.

The malware creates hooks for both the keyboard and the mouse. The API windows call “GetAsyncKeyState” is called which indicates that the malware is logging every keystroke (Keylogger).

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