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General
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Target
2023-06-05_9d8e89b9385730b406a3a1aca542568d_neshta_wannacry
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Size
877KB
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Sample
230606-jyhq1adc4t
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MD5
9d8e89b9385730b406a3a1aca542568d
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SHA1
e681e7b38ddfcfecc5574b893b30ba5744c04bb9
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SHA256
2bbff41fc9130ce1d19babdbe120a44a4d3c40d08b6ffd0edc65a3a71da41ebf
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SHA512
4a947d095d2c463292e9e8f67497e3d73fb63721a3e1aef83f93f617381b7b4dc951e9dc27b0a46e5b724446dd8d18ab0e69cb92849e644154ce4ee4c2bbd790
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SSDEEP
12288:VNsvP/BulDVh+OqcAJCDSnuvVjt7wce7KpTOpdBdNd9Rkv9i2cNJoWg+h6/j/dxX:haNu/iJNolNQ+00
Behavioral task
behavioral1
Sample
2023-06-05_9d8e89b9385730b406a3a1aca542568d_neshta_wannacry.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
2023-06-05_9d8e89b9385730b406a3a1aca542568d_neshta_wannacry.exe
Resource
win10v2004-20230220-en
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\How to Recovery.bat
33j4JbAEzZwWGgA2MxBARD7zprJuNDP2hP
Targets
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Target
2023-06-05_9d8e89b9385730b406a3a1aca542568d_neshta_wannacry
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Size
877KB
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MD5
9d8e89b9385730b406a3a1aca542568d
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SHA1
e681e7b38ddfcfecc5574b893b30ba5744c04bb9
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SHA256
2bbff41fc9130ce1d19babdbe120a44a4d3c40d08b6ffd0edc65a3a71da41ebf
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SHA512
4a947d095d2c463292e9e8f67497e3d73fb63721a3e1aef83f93f617381b7b4dc951e9dc27b0a46e5b724446dd8d18ab0e69cb92849e644154ce4ee4c2bbd790
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SSDEEP
12288:VNsvP/BulDVh+OqcAJCDSnuvVjt7wce7KpTOpdBdNd9Rkv9i2cNJoWg+h6/j/dxX:haNu/iJNolNQ+00
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Chaos Ransomware
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Detect Neshta payload
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Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
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Disables Task Manager via registry modification
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Modifies extensions of user files
Ransomware generally changes the extension on encrypted files.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Drops startup file
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Executes dropped EXE
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Loads dropped DLL
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Modifies system executable filetype association
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Adds Run key to start application
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Drops desktop.ini file(s)
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Sets desktop wallpaper using registry
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