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Threat Group Cards: A Threat Actor Encyclopedia

Permanent link Tool: Byeby

Description(Palo Alto) BYEBY was named based on a string within the malware itself. Most strings found within this malware are concatenated to 6 characters. One such example was an instance where a debug string contained ‘BYE BY’, which was likely a concatenated form of the phrase ‘BYE BYE’.

This malware is loaded as a DLL, with an export name of ServiceMain.

The malware is configured to accept a number of commands. These appear to be Base64-encoded strings that, when decoded, provide their true meaning. Only the beginning of the commands are checked. The Base64-decoded strings have been included for the benefit of the reader.

Last change to this tool card: 23 April 2020

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All groups using tool Byeby


APT groups

 CalypsoChina2016-Aug 2021 
 Vicious PandaChina2015-Mar 2020 

2 groups listed (2 APT, 0 other, 0 unknown)

Digital Service Security Center
Electronic Transactions Development Agency

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