Symantec and McAfee both released detailed analyses of the Duqu Trojan after obtaining a sample of the malware from an unidentified source. The security vendors had different accounts of a code signing certificate associated with Duqu. McAfee suggested that the certificate used by Duqu had been forged in a direct attack at a CA. Duqu is being used to steal information that can be used to develop the next Stuxnet worm, the vendors say. The Trojan is primarily used to target Certificate Authorities (CA) in parts of Asia, Europe and Africa.”]
Source: https://www.csoonline.com/article/2129837/symantec–mcafee-differ-on-duqu-threat.html