CaddyWiper

Internal ID: win.caddywiper

aliases

Last seen:Mar 17, 2026

Intelligence Profile

CaddyWiper is another destructive malware believed to be deployed to target Ukraine.

CaddyWiper wipes all files under C:\Users and all also all files under available drives from D: to Z: by overwriting the data with NULL value. If the target file is greater than 0xA00000 bytes in size (10MB), it will only wipe the first 0xA00000 bytes.

It also wipes disk partitions from \\.\PHYSICALDRIVE9 to \\.\PHYSICALDRIVE0 by overwriting the first 0x780 bytes with NULL.

Threat Analysis

CaddyWiper is a malware family tracked by threat intelligence researchers and catalogued in the Malpedia dataset. It represents a distinct malicious software lineage with identifiable code characteristics, behaviors, and victimology.

External References

→https://blog.eset.ie/2022/04/12/industroyer2-industroyer-reloaded/

→https://blog.malwarebytes.com/threat-intelligence/2022/03/double-header-isaacwiper-and-caddywiper/

→https://blog.morphisec.com/caddywiper-analysis-new-malware-attacking-ukraine

→https://blog.talosintelligence.com/2022/03/threat-advisory-caddywiper.html

→https://blogs.microsoft.com/on-the-issues/2022/12/03/preparing-russian-cyber-offensive-ukraine/

→https://cert.gov.ua/article/3718487

→https://cert.gov.ua/article/39518

→https://cip.gov.ua/en/news/khto-stoyit-za-kiberatakami-na-ukrayinsku-kritichnu-informaciinu-infrastrukturu-statistika-15-22-bereznya

→https://cybernews.com/cyber-war/new-destructive-wiper-malware-deployed-in-ukraine/

→https://cybersecurity.att.com/blogs/labs-research/analysis-on-recent-wiper-attacks-examples-and-how-they-wiper-malware-works

Quick Facts

TypeMalware Family

Aliases1

Also Known As

win.caddywiper

Research Links

MITRE ATT&CK VirusTotal Google (news) Twitter/X search

Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.

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