Threat Group Cards: A Threat Actor Encyclopedia

APT group: MoustachedBouncer

Names	MoustachedBouncer (ESET)
Country	Belarus
Motivation	Information theft and espionage
First seen	2014
Description	(ESET) MoustachedBouncer is a cyberespionage group discovered by ESET Research and first publicly disclosed in this blogpost. The group has been active since at least 2014 and only targets foreign embassies in Belarus. Since 2020, MoustachedBouncer has most likely been able to perform adversary-in-the-middle (AitM) attacks at the ISP level, within Belarus, in order to compromise its targets. The group uses two separate toolsets that we have named NightClub and Disco. While we track MoustachedBouncer as a separate group, we have found elements that make us assess with low confidence that they are closely collaborating with another group known as Winter Vivern.
Observed	Sectors: Foreign embassies in Belarus. Countries: Belarus.
Tools used
Information	<https://www.welivesecurity.com/en/eset-research/moustachedbouncer-espionage-against-foreign-diplomats-in-belarus/>

Last change to this card: 06 September 2023

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