More Password-Theft Shenanigans

Recently, my colleague Pedro Bueno wrote about “dumb” malware authors hardcoding their login credentials into their password-stealing Trojan. The malware he referenced, PWS-Banker.gen.i, ostensibly came from Brazil. Today, we found the same negligence in a similar piece of Chinese malware detected as PWS-Banker.gen.de.

When run, the password-stealing Trojan queries for the infected host’s IP address using three web-based IP address-lookup services. It then makes a SQL query over TCP to post stolen passwords to a server in China. This is a part of the actual SQL query to log into the malicious SQL server:

Provider=SQLOLEDB.1;Password=168520564;Persist Security Info=True;User ID=mengmeng;[REMOVED]

mengmeng has been malicious, and what’s more, was careless to leave his login credentials in the open. Please keep your DATs updated to stay secure!