Loading malware…
WannaCry, also known as WannaCryptor, WCry, WanaCrypt0r 2.0, and Wana Decryptor, is a Windows ransomware family that caused a global outbreak in May 2017. It encrypts victim files and presents a ransom demand, while also incorporating worm-like propagation that enabled rapid self-spreading across networks. The outbreak disrupted organizations worldwide, including critical healthcare environments in the United Kingdom.
The malware is widely associated with the North Korea-aligned Lazarus Group. Public attribution has linked WannaCry to Lazarus through code overlaps and shared development artifacts with earlier Lazarus malware. Reporting also identifies pre-outbreak variants and beta builds from early 2017, indicating development and testing before the large-scale campaign.
A defining characteristic of WannaCry was its use of the EternalBlue SMB exploit to spread between vulnerable Windows systems, allowing mass propagation where systems had not been patched. Separate reporting also notes an earlier near-identical variant that spread via SMB brute-forcing shortly before the main outbreak. This combination of ransomware functionality with automated network propagation made WannaCry unusually disruptive compared with conventional manually deployed ransomware.
WannaCry targeted Windows systems and is best classified as ransomware with worm-like behavior. Its known capabilities include encrypting data for extortion, propagating laterally through vulnerable hosts, and establishing broad post-compromise impact through automated spread. The malware remains one of the most consequential ransomware incidents due to its scale, speed of propagation, and operational linkage to Lazarus.
Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.
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.
This strain goes by the names WanaCrypt0r 2.0, WCry, WannaCrypt and Wana Decryptor.
attackers infecting unpatched Windows webservers with a malicious cryptocurrency miner... exploited a known vulnerability in Microsoft IIS 6.0 to covertly install the miner... ESET customers are protected against any attempts to exploit the CVE-2017-7269 vulnerability... There are two IP addresses that we identified as the source of brute-force scans for the CVE-2017-7269 vulnerability... It is a vulnerability in the WebDAV service that is part of Microsoft IIS version 6.0
1 distinct threat actor attributed by public researchers. Open in Mallory to see the full evidence chain and overlapping campaigns.
Tracking Ransomware End-to-end Cerber Locky WannaCryptor
5 distinct techniques documented for this family, organized by ATT&CK tactic.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Ransomware cited as historical background on Lazarus rather than part of the WinorDLL64/Wslink activity described here.
Lazarus-attributed ransomware outbreak referenced as part of the group’s historical toolset/operations.
Ransomware worm used in widespread global attacks; multiple references discuss its spread, variants, decryption, and links to Lazarus.
Referenced only as a comparison point for destructive malware outbreaks and patching urgency; not part of the cryptomining campaign itself.
Match every observed IP, domain, and hash against your live telemetry.
Named campaigns wielding this family, with evidence pinned to each claim.
CVEs this family uses for access and lateral movement.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Every documented technique, ranked by evidence weight.
Reddit, Mastodon, and CTI community discussion around this family.