S1090: NightClub

S1090: NightClub describes [NightClub](https://attack.mitre.org/software/S1090) is a modular implant written in C++ that has been used by [MoustachedBouncer](https://attack.mitre.org/groups/G1019) since at least 2014.(Citation: MoustachedBouncer ESET August 2023)

Executive priority

S1090: NightClub is an official MITRE ATT&CK software. Glexia treats it as defensive behavior context for prioritizing monitoring, control validation, and response planning without using the object by itself as an attribution claim.

Technical view

Security teams should validate S1090: NightClub by reviewing the official ATT&CK relationships, mapped tactics (the mapped ATT&CK tactic context), supported platforms (Windows), and available local telemetry before making detection or mitigation decisions.

Likely telemetry

Official ATT&CK relationships and object metadata
Network, endpoint, and security-tool telemetry

Detection direction

Validate whether S1090: NightClub appears in your detection coverage and tabletop scenarios.
Use the object to align executive risk language with SOC, incident response, and detection engineering work.
Do not treat ATT&CK relationship context as attribution without corroborating evidence.

Mitigation priorities

Map the object to existing controls and identify missing telemetry or response ownership.
Prioritize mitigations that reduce exposure on the listed platforms and tactics.
Review adjacent ATT&CK relationships before changing policy, detections, or reporting language.

Additional notes and limits

Baseline Glexia take generated from the official MITRE ATT&CK STIX object, source hash, tactics, platforms, and detection fields. It is safe to replace with a richer model-generated take for the same source hash later.

This baseline take is source-grounded and schema-validated, but it does not include environment-specific telemetry, incident evidence, or threat-intelligence corroboration.

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Official MITRE ATT&CK definition

NightClub

NightClub is a modular implant written in C++ that has been used by MoustachedBouncer since at least 2014.[1]

View the same entry on attack.mitre.org (MITRE-hosted reference; in-page links above use the Glexia ATT&CK library.)

Glexia analysis

How security teams should use this page

Treat this object as behavior context, not an attribution claim. Validate the related groups, software, data sources, and mitigations against official ATT&CK relationships and your own telemetry before making control-coverage decisions.

ATT&CK relationship table

Techniques used

This mirrors the MITRE pattern of making group, software, campaign, and technique relationships scannable. Relationship notes come from mirrored ATT&CK relationship text when available.

Filter related techniques21 rows

Domain	ID	Name	Relationship / procedure
Enterprise	T1543.003	Windows ServiceSub-technique	NightClub has created a Windows service named `WmdmPmSp` to establish persistence.[1]
Enterprise	T1041	Exfiltration Over C2 Channel	NightClub can use SMTP and DNS for file exfiltration and C2.[1]
Enterprise	T1036.005	Match Legitimate Resource Name or LocationSub-technique	NightClub has chosen file names to appear legitimate including EsetUpdate-0117583943.exe for its dropper.[1]
Enterprise	T1005	Data from Local System	NightClub can use a file monitor to steal specific files from targeted systems.[1]
Enterprise	T1106	Native API	NightClub can use multiple native APIs including `GetKeyState`, `GetForegroundWindow`, `GetWindowThreadProcessId`, and `GetKeyboardLayout`.[1]
Enterprise	T1083	File and Directory Discovery	NightClub can use a file monitor to identify .lnk, .doc, .docx, .xls, .xslx, and .pdf files.[1]
Enterprise	T1071.004	DNSSub-technique	NightClub can use a DNS tunneling plugin to exfiltrate data by adding it to the subdomain portion of a DNS request.[1]
Enterprise	T1070.006	TimestompSub-technique	NightClub can modify the Creation, Access, and Write timestamps for malicious DLLs to match those of the genuine Windows DLL user32.dll.[1]
Enterprise	T1132.002	Non-Standard EncodingSub-technique	NightClub has used a non-standard encoding in DNS tunneling removing any `=` from the result of base64 encoding, and replacing `/` characters with `-s` and `+` characters with `-p`.[1]
Enterprise	T1071.003	Mail ProtocolsSub-technique	NightClub can use emails for C2 communications.[1]
Enterprise	T1036.004	Masquerade Task or ServiceSub-technique	NightClub has created a service named `WmdmPmSp` to spoof a Windows Media service.[1]
Enterprise	T1010	Application Window Discovery	NightClub can use `GetForegroundWindow` to enumerate the active window.[1]
Enterprise	T1056.001	KeyloggingSub-technique	NightClub can use a plugin for keylogging.[1]
Enterprise	T1113	Screen Capture	NightClub can load a module to call `CreateCompatibleDC` and `GdipSaveImageToStream` for screen capture.[1]
Enterprise	T1105	Ingress Tool Transfer	NightClub can load multiple additional plugins on an infected host.[1]
Enterprise	T1027	Obfuscated Files or Information	NightClub can obfuscate strings using the congruential generator `(LCG): staten+1 = (690069 × staten + 1) mod 232`.[1]
Enterprise	T1057	Process Discovery	NightClub has the ability to use `GetWindowThreadProcessId` to identify the process behind a specified window.[1]
Enterprise	T1120	Peripheral Device Discovery	NightClub has the ability to monitor removable drives.[1]
Enterprise	T1123	Audio Capture	NightClub can load a module to leverage the LAME encoder and `mciSendStringW` to control and capture audio.[1]
Enterprise	T1074.001	Local Data StagingSub-technique	NightClub has copied captured files and keystrokes to the `%TEMP%` directory of compromised hosts.[1]
Enterprise	T1112	Modify Registry	NightClub can modify the Registry to set the ServiceDLL for a service created by the malware for persistence.[1]

Associated objects

Groups, software, and campaigns

G1019: MoustachedBouncer

MoustachedBouncer is a cyberespionage group that has been active since at least 2014 targeting foreign embassies in Belarus.[1]

Relationship explorer

All related ATT&CK context

Change history

Object version and sync metadata

The fields below describe the current mirrored snapshot. When Glexia retains multiple ATT&CK source imports, you can open the table to compare the same object across releases (hashes and MITRE timestamps). For MITRE’s own release notes and roadmap, see ATT&CK resources — Updates.

ATT&CK release: 19.2
Object version: 1.0
Created: Sep 27, 2023, 19:32 UTC (UTC+00:00)
Modified: Sep 27, 2023, 19:33 UTC (UTC+00:00)
Raw hash: 9a6bcfdfc1f5aa6b...

Imported snapshots across ATT&CK releases(2)

Release	Bundle imported	Object version	Modified	Status	Raw hash
19.2	Aug 6, 2026, 02:58 UTC (UTC+00:00)	1.0	Sep 27, 2023, 19:33 UTC (UTC+00:00)	Current bundle	`9a6bcfdfc1f5…`
19.1	Jul 14, 2026, 09:14 UTC (UTC+00:00)	1.0	Sep 27, 2023, 19:33 UTC (UTC+00:00)	Older bundle	`9a6bcfdfc1f5…`

Raw source

Mirrored ATT&CK source object

The raw object is retained through the mirrored ATT&CK source bundle and object hash. The raw endpoint returns the exact object from the mirrored bundle when available.

Open mirrored raw JSON Open MITRE-hosted copy

Source references

External references and citations

MITRE external references are preserved separately from Glexia analysis so citations remain traceable to their original source records.

[1]
MoustachedBouncer ESET August 2023
Faou, M. (2023, August 10). MoustachedBouncer: Espionage against foreign diplomats in Belarus. Retrieved September 25, 2023.
Open source URL
[2]
mitre-attackS1090
Open source URL

Source and licensing

Source: MITRE ATT&CK®. © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. MITRE ATT&CK and ATT&CK are registered trademarks of The MITRE Corporation. Glexia is not affiliated with or endorsed by MITRE.

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