Trojan.APT.LetsGo

Trojan.APT.LetsGo is a Trojan that is involved in a malware attack, which affects companies. The malware campaign that is used by cybercrooks to infects vulnerable PCs with Trojan.APT.LetsGo uses the name of the company it aims at in the CnC web address name. Trojan.APT.LetsGo constantly uses either names of companies or a project that a specific company is working on in its CnC web address name in order not to look suspicious. Trojan.APT.LetsGo proliferates via infectious emails that involve harmful web addresses. The .zip file carries 'Updated_office_contact_v1.exe', which, while being run, creates 'ctfmon.exe' and 'Lanl_Office_Contact_oct.pdf' in the '%UserProfile%\Local Settings\Temp' directory. It then opens a decoy PDF document for example, 'Lanl_Office_Contact_oct.pdf' from the Temp directory and then executes ' tfmon.exe'. 'Lanl_office_contact_oct.pdf' belongs to 'Los Alamos National Lab' and in the PDF file the contacts on their website can be found as well. 'ctfmon.exe' creates a copy of itself into the '%UserProfile%\Start Menu\Programs\Startup\ctfmon.exe' directory to launch every time the infected computer is turned on and starts communicating with the CnC server.