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MalwareRansomwareUsed by 1 actorExploits 2 CVEs

LOCKBIT.WARLOCK

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EXPLOITED CVES

Vulnerabilities exploited

2 CVEs Mallory has correlated with this family across public research and vendor advisories. Each row links to the full Mallory page for that vulnerability.

2 CVES
CVE-2025-53770ToolShell RCE in on-premises Microsoft SharePoint ServerExploited in the wild

CVE-2025-53770, a deserialization vulnerability in Microsoft SharePoint Server, could be chained with CVE-2025-53771 in an exploit known as ToolShell. At least two clusters exploited it as a zero-day, and three more did so after patches shipped in late July. The financially motivated cluster UNC6357 used the SharePoint vulnerabilities to deploy LOCKBIT.WARLOCK ransomware. | The financially motivated cluster UNC6357 used the SharePoint vulnerabilities to deploy LOCKBIT.WARLOCK ransomware.

via help net securityhelpnetsecurity.com
CVE-2025-53771Microsoft SharePoint ToolShell spoofing/path traversal patch bypassExploited in the wild

The financially motivated cluster UNC6357 used the SharePoint vulnerabilities to deploy LOCKBIT.WARLOCK ransomware. | CVE-2025-53770, a deserialization vulnerability in Microsoft SharePoint Server, could be chained with CVE-2025-53771 in an exploit known as ToolShell. At least two clusters exploited it as a zero-day, and three more did so after patches shipped in late July. The financially motivated cluster UNC6357 used the SharePoint vulnerabilities to deploy LOCKBIT.WARLOCK ransomware.

via help net securityhelpnetsecurity.com
THREAT ACTORS

Groups observed using it

1 distinct threat actor attributed by public researchers. Open in Mallory to see the full evidence chain and overlapping campaigns.

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UNC6357

The financially motivated cluster UNC6357 used the SharePoint vulnerabilities to deploy LOCKBIT.WARLOCK ransomware.

via help net securityhelpnetsecurity.com
MITRE ATT&CK

Techniques & procedures

3 distinct techniques documented for this family, organized by ATT&CK tactic.

Initial Access

1 technique
T1190Exploit Public-Facing ApplicationEvidence1

Exploits remained the leading entry point for attackers for the sixth consecutive year... Exploits remained first at 32%.

Execution

1 technique
T1203Exploitation for Client ExecutionEvidence1

CVE-2025-53770... could be chained with CVE-2025-53771 in an exploit known as ToolShell... The financially motivated cluster UNC6357 used the SharePoint vulnerabilities to deploy LOCKBIT.WARLOCK ransomware.

Impact

1 technique
T1486Data Encrypted for ImpactEvidence1

UNC2165 ultimately destroyed backups and deployed RansomHub ransomware across Windows and virtual management servers... attackers also... deployed ransomware at the hypervisor level by encrypting datastore files.

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
What this page doesn’t show

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This page is what’s public. Mallory adds the parts that aren’t: which of your assets match these IOCs, which detections are missing, which campaigns to expect next, and what to do in the next 30 minutes.
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IOC matching

Match every observed IP, domain, and hash against your live telemetry.

Threat actor attribution1

Named campaigns wielding this family, with evidence pinned to each claim.

Exploited vulnerabilities2

CVEs this family uses for access and lateral movement.

Detection signatures

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

MITRE ATT&CK mapping3

Every documented technique, ranked by evidence weight.

Researcher chatter

Reddit, Mastodon, and CTI community discussion around this family.