3 malware families

UAC-0238

Also known asUAC-0238

UAC-0238 is a threat actor tracked in the Ukrainian UAC naming scheme and associated with ransomware deployment via exploitation of exposed Remote Desktop Protocol services. Reported activity links the group to the delivery of multiple ransomware families, including X2anylock, Warlock, and LockBit 3.0, into already compromised environments. This indicates an intrusion pattern centered on opportunistic external access abuse followed by rapid monetization or disruptive payload deployment. The actor has been observed using exposed RDP as an initial access vector, placing it among operators that capitalize on weak perimeter exposure and insufficient remote-access hardening. Its known operations are tied to ransomware execution rather than long-form espionage tradecraft in the available reporting. The use of several distinct ransomware variants suggests operational flexibility and possible overlap with broader criminal ransomware ecosystems rather than exclusive use of a single proprietary strain. Available information directly supports initial access through exposed remote services and ransomware deployment. Broader attribution, organizational structure, sub-groups, country of origin, and victimology beyond the reported access-and-deploy pattern are not currently available at high confidence.

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MITRE ATT&CK

Tradecraft

2 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.

3 of 15 tactics3 techniques×N= number of intelligence reports citing this technique

MITRE ATT&CK

TA0001

Initial Access

1 technique

T1133

External Remote Services

TA0003

Persistence

1 technique

T1133

External Remote Services

TA0040

Impact

1 technique

T1486

Data Encrypted for Impact

ARSENAL

Associated malware families

3 malware families attributed to this actor across reporting.

FamilyContextEvidenceLast seen

LockBitGroups including UAC-0238 exploited exposed RDP services to push ransomware variants such as X2anylock, Warlock, and LockBit 3.0 into compromised environments.1May 22, 2026

WarlockGroups including UAC-0238 exploited exposed RDP services to push ransomware variants such as X2anylock, Warlock, and LockBit 3.0 into compromised environments.1May 22, 2026

X2ANYLOCKGroups including UAC-0238 exploited exposed RDP services to push ransomware variants such as X2anylock, Warlock, and LockBit 3.0 into compromised environments.1May 22, 2026

ACTIVITY FEED

Recent activity

1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

1 SOURCESView more in app

cyber security newsNews

May 22, 2026

Russian Threat Groups Use RDP, VPN, Supply Chain Attacks, and Social Engineering for Initial Access

Used exposed RDP services to deploy ransomware into compromised environments.

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Target overlap

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Tradecraft mapping2

Every observed MITRE ATT&CK technique, grouped by tactic.

Malware arsenal3

Families this actor is known to deploy, with IOCs and behavior.

Exploited CVEs

CVEs this actor has used in known campaigns.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Observables

Domains, IPs, and hashes tied to this actor, refreshed continuously.

UAC-0238

Also known asUAC-0238