HijackThis is a free tool Trend Micro offers as a courtesy to end users—customers and non-customers alike. It helps users evaluate their machines for possible infections by generating in-depth log reports for Windows operated systems. It also incorporates several useful tools that can help manually remove malware from infected computers.
Over time, HijackThis continuously became more popular, making it hard for malware proponents to waste the opportunity to use the tool to proliferate their malicious creations. TrendLabsSM engineers recently came across TROJ_DROPPER.QLC, which uses “HijackThis” as product name and “Trend Micro Inc.” as copyright holder.
These deceiving properties may trick HijackThis users into executing the Trojan, which then drops another malware detected as TROJ_UNDEF.QI, allowing the users’ systems to end up being hijacked by malware.
Trend Micro product users need not worry, however, as the Smart Protection Network™ protects them from this threat by detecting and preventing the execution of TROJ_DROPPER.QLC and TROJ_UNDEF.QI on their systems via the file reputation service.