According to Symantec's research, the new Trojan is sloppy. "Users may be able to detect the presence of this malicious code via a registry key that happens to not be hidden by the rootkit component," said an alert to Symantec's DeepSight customers. The registry key to look for, said Symantec, is:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RcpApi\"MachineNum" = "[six random digits-six random digits-two random digits]"
In other Mpack-related news, a third Symantec security researcher said today that he's spotted the toolkit selling for as little as $150, an 85 percent reduction from its previous $1,000 price tag.
"Considering the toolkit is written in a script language, it is easy to redistribute and modify," said Eric Chien, a Symantec security response engineer. "The sellers likely didn't even need to buy it themselves, but rather probably found some of the multiple Web sites that did not employ standard Web site protections, allowing them to download the whole kit for free.
"Talk about clearance sales."
Mpack's wider "distribution" spells trouble not only for the hacker -- suspected to be Russian -- who created the multiple-strike attack kit, but for users, too. "Its usage is likely to grow," said Chien. "In addition, without a single author controlling the distribution of the toolkit, we also expect to see forks of the source code with additional exploits, bug fixes, and other feature enhancements."
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