General
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Target
2f1423236641c619b68a50afe9444c09d97a5a3dd8523b9d636f436a46aab0a8
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Size
758KB
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Sample
240328-qnmqjafb31
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MD5
1fa9ad2e8e78a5cf27426d029449273f
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SHA1
255b6aa9e61304b8b15fecbf3df63c25699dd895
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SHA256
2f1423236641c619b68a50afe9444c09d97a5a3dd8523b9d636f436a46aab0a8
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SHA512
52b7462f29e61a8350ffb24d83fc222640792ab4558de86c35fe1486ceb9c2b88b42463a074ce285ff5a5de562b93530a1bcd39791d3b7e223758aaa5ee31c95
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SSDEEP
12288:53Q5t1+qoYYwwWcyAlK2YDgk3bLyD+AisxpEKYFu5JgEJ/Rb9c7PS3AkY7Foa7OL:5E+jMolZYDgab+3xiKYF+Jpbi7P0AkY5
Static task
static1
Behavioral task
behavioral1
Sample
2f1423236641c619b68a50afe9444c09d97a5a3dd8523b9d636f436a46aab0a8.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
2f1423236641c619b68a50afe9444c09d97a5a3dd8523b9d636f436a46aab0a8.exe
Resource
win11-20240221-en
Malware Config
Extracted
djvu
http://sajdfue.com/test1/get.php
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extension
.vook
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offline_id
1eSPzWRaNslCgtjBZfL5pzvovoiaVI4IZSnvAwt1
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payload_url
http://sdfjhuz.com/dl/build2.exe
http://sajdfue.com/files/1/build3.exe
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ransomnote
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Extracted
vidar
8.6
5739ef2bbcd39fcd59c5746bfe4238c5
https://steamcommunity.com/profiles/76561199658817715
https://t.me/sa9ok
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profile_id_v2
5739ef2bbcd39fcd59c5746bfe4238c5
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36
Targets
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Target
2f1423236641c619b68a50afe9444c09d97a5a3dd8523b9d636f436a46aab0a8
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Size
758KB
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MD5
1fa9ad2e8e78a5cf27426d029449273f
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SHA1
255b6aa9e61304b8b15fecbf3df63c25699dd895
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SHA256
2f1423236641c619b68a50afe9444c09d97a5a3dd8523b9d636f436a46aab0a8
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SHA512
52b7462f29e61a8350ffb24d83fc222640792ab4558de86c35fe1486ceb9c2b88b42463a074ce285ff5a5de562b93530a1bcd39791d3b7e223758aaa5ee31c95
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SSDEEP
12288:53Q5t1+qoYYwwWcyAlK2YDgk3bLyD+AisxpEKYFu5JgEJ/Rb9c7PS3AkY7Foa7OL:5E+jMolZYDgab+3xiKYF+Jpbi7P0AkY5
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Detect Vidar Stealer
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Detected Djvu ransomware
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Downloads MZ/PE file
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Modifies file permissions
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Adds Run key to start application
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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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Suspicious use of SetThreadContext
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