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UNC2447 is a financially motivated cybercrime cluster tracked by Mandiant, associated with FIVEHANDS ransomware and the SOMBRAT backdoor. Its activity was clustered across five intrusions between November 2020 and February 2021 using shared SOMBRAT and Cobalt Strike BEACON infrastructure. It has targeted organizations in North America and Europe. UNC2447 monetizes intrusions through ransomware encryption and data-theft extortion, threatening media exposure and offering stolen victim data for sale on criminal forums. UNC2447-affiliated actors have also deployed RAGNARLOCKER ransomware. The group exploited CVE-2021-20016, an unauthenticated SQL injection vulnerability in SonicWall Secure Mobile Access 100 series appliances, before patches became available in February 2021. Its tooling includes the WARPRISM PowerShell dropper, Cobalt Strike BEACON, and SOMBRAT. WARPRISM loads payloads directly into memory to evade endpoint detection. SOMBRAT is a modular Windows backdoor that downloads and executes plugins and supports DNS and TLS-encrypted TCP command-and-control. Variants used in these intrusions incorporate obfuscation and anti-analysis hardening. UNC2447 uses Cobalt Strike for persistent access and HTTPS command-and-control, and employs tools including AdFind, BloodHound, Mimikatz, Advanced IP Scanner, RouterScan, Rclone, S3 Browser, and 7-Zip for reconnaissance, credential acquisition, data collection, and exfiltration. Its operations demonstrate advanced detection evasion and efforts to minimize forensic evidence. Shared tooling and affiliate-based ransomware operations mean that SOMBRAT or FIVEHANDS deployment alone does not establish attribution to UNC2447.
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Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Sectors the actor has been observed targeting.
Geographies tied to known operations.
21 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
23 malware families attributed to this actor across reporting.
18 additional families tracked in Mallory.
1 CVE this actor has used in observed campaigns. 1 of them exploited in the wild.
33 indicators attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Referenced as an associated cluster tied (via an initial access broker) to Yanluowang-related activity; specific operations/TTPs are not detailed in this content beyond the stated linkage.
A financially motivated activity cluster associated with SombRAT and FIVEHANDS ransomware.
Financially motivated intrusion activity consistent with an initial access broker: vishing/MFA fatigue to obtain VPN access, enrollment of new MFA devices, privilege escalation to admin, extensive credential dumping (NTDS/SAM/LSASS), lateral movement via RDP/Citrix, log clearing/defense evasion, limited exfiltration (Box folder + AD auth data), and repeated re-entry attempts post-eviction. Content notes historical linkage to ransomware operations and double-extortion tradecraft, though no ransomware was deployed in this incident.
Financially motivated intrusion activity consistent with an initial access broker: vishing/MFA fatigue to obtain VPN access, enrollment of new MFA devices, privilege escalation to admin, extensive credential dumping (NTDS/SAM/LSASS), lateral movement via RDP/Citrix, log clearing/defense evasion, limited exfiltration (Box folder + AD auth data), and repeated re-entry attempts post-eviction. Content notes historical linkage to ransomware operations and double-extortion tradecraft, though no ransomware was deployed in this incident.
Match sector + geo + tech-stack targeting against your real footprint.
Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Domains, IPs, and hashes tied to this actor, refreshed continuously.