General
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Target
2a90eb955e7c7d9909748e3701f85e0faf5a5c26ccd3977b6967a5b18db7813c
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Size
784KB
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Sample
240328-krvbwsgg4y
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MD5
503bc4de507d9eb56dfcf4354c1ea8e4
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SHA1
1eefb346ce38a77c2edab3e6968d33b0bf58e65c
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SHA256
2a90eb955e7c7d9909748e3701f85e0faf5a5c26ccd3977b6967a5b18db7813c
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SHA512
bfe577a848997e261b4dac908fa56f5b33b607b841106910b0e68e5e6ba8e2b4658a160db72b61687e035c76fb3f4350c9af54325e1151ef793387d4451d5cab
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SSDEEP
12288:F+XmQJX5zl3hklvHcDShMkE/jxgl3DKOApAwwvp4LMlw+Hk0UMZPCqOgEr9:03pzxMEDShuVaTKkwyrlwqlVZPCMEr9
Malware Config
Extracted
djvu
http://sajdfue.com/test2/get.php
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extension
.looy
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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
2a90eb955e7c7d9909748e3701f85e0faf5a5c26ccd3977b6967a5b18db7813c
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Size
784KB
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MD5
503bc4de507d9eb56dfcf4354c1ea8e4
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SHA1
1eefb346ce38a77c2edab3e6968d33b0bf58e65c
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SHA256
2a90eb955e7c7d9909748e3701f85e0faf5a5c26ccd3977b6967a5b18db7813c
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SHA512
bfe577a848997e261b4dac908fa56f5b33b607b841106910b0e68e5e6ba8e2b4658a160db72b61687e035c76fb3f4350c9af54325e1151ef793387d4451d5cab
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SSDEEP
12288:F+XmQJX5zl3hklvHcDShMkE/jxgl3DKOApAwwvp4LMlw+Hk0UMZPCqOgEr9:03pzxMEDShuVaTKkwyrlwqlVZPCMEr9
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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