General
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Target
6f9a3635f4ac67f1de6abe2e6c8842fd984bf17316be0b2bffb23eb2e9a38531
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Size
785KB
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Sample
240328-js9brsde49
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MD5
a12e55075d81449f86b1ffb157c11024
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SHA1
0eb60fb510d7bdc36ed0775afc5b69dd9d24764c
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SHA256
6f9a3635f4ac67f1de6abe2e6c8842fd984bf17316be0b2bffb23eb2e9a38531
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SHA512
3a501b37e70e6e8b40f481c88aee3b39f9d9fc065650d4ef6832a765287bc5db7ca0ac2489637309eceeb8c4bf2bfea60824b88be876285b65a7d3faa0167dd2
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SSDEEP
24576:RM2+t/7EhurayB//FaZf4xq/WzoDe5AjDf:RX+tRrzzEQ6De54D
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
6f9a3635f4ac67f1de6abe2e6c8842fd984bf17316be0b2bffb23eb2e9a38531
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Size
785KB
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MD5
a12e55075d81449f86b1ffb157c11024
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SHA1
0eb60fb510d7bdc36ed0775afc5b69dd9d24764c
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SHA256
6f9a3635f4ac67f1de6abe2e6c8842fd984bf17316be0b2bffb23eb2e9a38531
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SHA512
3a501b37e70e6e8b40f481c88aee3b39f9d9fc065650d4ef6832a765287bc5db7ca0ac2489637309eceeb8c4bf2bfea60824b88be876285b65a7d3faa0167dd2
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SSDEEP
24576:RM2+t/7EhurayB//FaZf4xq/WzoDe5AjDf:RX+tRrzzEQ6De54D
Score10/10-
Detect Vidar Stealer
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Detected Djvu ransomware
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Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Vidar
Vidar is an infostealer based on Arkei stealer.
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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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