Ransomware Research
Blackout Ransomware
Blackout is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on July 1, 2017, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Blackout
- First Seen
- July 1, 2017
How Blackout Ransomware Works
Targeted Files
Encodes filenames with base64 -> ida_allins.pyc -> aWRhX2FsbGlucy5weWM= https://app.any.run/tasks/429a046c-1168-4f5f-8edc-74d5fcfdbc35/
Ransom Note and Payment Demands
After encrypting files, Blackout displays ransom notes demanding payment for file recovery:
/^README_[0-9]{7}_[0-9]{5}\.txt$/Ransom message:
notes/README_1183339_23654.txt
/^README_[0-9]{7}\.txt$/Ransom message:
notes/README_4612110.txt
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with Blackout ransomware:
iudorki.exeverytu.exeb4ad3e62644c344291e08a53a576e6dd.program.exepkadentiri.exe1534602634-w4ebp-bbf.pe32OFTBRWCI.EXEReport_MN180634257.docxreport_6054172398.docxUID6817439520.docxUID9061784523.docxReport_MN6153420798.docxreport_8704359621.docxxaqipaxowq.exepu.com6.exeeksadiwjgkew.exeUS-2020-03-03-16-18-40-0C03624B-9417807A-3C69D917-C6C250EF-C4987959.comus-2020-03-03-16-18-40-0c03624b-9417807a-3c69d917-c6c250ef-c4987959.comrozibert.exe
Elastio Can Help You
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About This Analysis
This Blackout ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery solutions, helping organizations defend against and recover from ransomware attacks like Blackout.
Last updated: July 30, 2025