Cyber Resilience

Threat actor · all actors

MoustachedBouncerG1019 state

🇧🇾 BY

aka MoustachedBouncer

Last updated: 2026-08-20

0attributed CVEs
11ATT&CK techniques
0.0IDF score (tooling uniqueness)
0exclusive CVEs
—years active

About this actor

MoustachedBouncer is a cyberespionage group discovered by ESET Research and first publicly disclosed in August 2023. 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.

Source: MITRE ATT&CK

Names & naming systems

Each vendor coins its own name for the same actor. Where a name follows a known scheme we attribute it; the rest are listed honestly as unclassified.

MITRE ATT&CKG-number catalogue id

G1019

Unclassifiedno scheme matched

MoustachedBouncer

How we know this

Data origin
MITRE ATT&CK Imported from the MITRE ATT&CK STIX bundle as an intrusion-set object.
Techniques
MITRE ATT&CK STIX mappings — 11 ATT&CK techniques on file.
Named victims
None on file.

See how actor data is built for the full pipeline.

Activity timeline

No activity events recorded.

Profile

CVERiskCVSSEPSSPublishedProducts
No attributed CVEs.

Mitigating controls (NIST 800-53)

ControlTechniques coveredCoverage
SI-37 / 1164%
SI-47 / 1164%
CM-26 / 1155%
CM-66 / 1155%
SI-76 / 1155%
AC-35 / 1145%
CM-75 / 1145%
SI-25 / 1145%
AC-174 / 1136%
AC-24 / 1136%
AC-64 / 1136%
CA-74 / 1136%
CM-84 / 1136%
RA-54 / 1136%
SI-104 / 1136%

Co-occurring actors

None.

Similar actors

Similar TTPs

Same nation-state

Same category