1 malware familyExploits CVEs in the wild

UNC2633

Also known asunc2633

UNC2633 is a Mandiant-tracked distribution threat cluster associated with distributing QAKBOT. The provided content states that UNC4393 overwhelmingly leveraged initial access gained via UNC2633 and UNC2500 QAKBOT botnet infections to deploy BASTA ransomware. The content also states that UNC2633 exploited CVE-2022-30190 (Follina) and used that zero-day vulnerability to distribute QAKBOT. Based on the provided material, UNC2633 is linked to financially motivated intrusion activity through its role as an access and malware distribution cluster supporting downstream ransomware operations. No additional aliases, sub-groups, or attribution to a nation state are provided in the content.

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MITRE ATT&CK

Tradecraft

5 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 tactics6 techniques×N= number of intelligence reports citing this technique

MITRE ATT&CK

TA0001

Initial Access

1 technique

T1566×2

Phishing

T1566.001

Spearphishing Attachment

T1566.002

Spearphishing Link

TA0002

Execution

1 technique

T1203

Exploitation for Client Execution

TA0005

Stealth

1 technique

T1027

Obfuscated Files or Information

T1027.006

HTML Smuggling

ARSENAL

Associated malware families

1 malware family attributed to this actor across reporting.

FamilyContextEvidenceLast seen

QakBotThe group has overwhelmingly leveraged initial access gained via UNC2633 and UNC2500 QAKBOT botnet infections to deploy BASTA ransomware. QAKBOT is typically distributed via phishing emails containing malicious links or attachments.2Jun 14, 2026

WEAPONIZED

Associated vulnerabilities

1 CVE this actor has used in observed campaigns. 1 of them exploited in the wild.

CVE-2022-30190FollinaIn the wildEvidence1

Multiple groups exploiting CVE-2022-30190 (aka Follina) in early 2022... suspected Chinese activity exploiting CVE-2022-30190 (aka Follina) in Microsoft Diagnostics Tool (MDST) that would allow an attacker to execute arbitrary code... APT28 exploited CVE-2022-30190 (aka Follina) in early June 2022... UNC2633... exploit CVE-2022-30190 (aka Follina)... to distribute QAKBOT.

ACTIVITY FEED

Recent activity

2 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.

2 SOURCESView more in app

No news coverage yet. Advisories and community discussion only.

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Target overlap

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Tradecraft mapping5

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

Malware arsenal1

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

Exploited CVEs1

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.