General
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Target
1a580f049a51caef8faa708561d48b4f55e5af53c71ce086424f49db014c2979
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Size
743KB
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Sample
230423-q5gkvafc7s
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MD5
667f32aa7b259dec08674013a42d78ba
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SHA1
50cb3dbf6a9930ecf3a9ca9f50af3b12226941ec
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SHA256
1a580f049a51caef8faa708561d48b4f55e5af53c71ce086424f49db014c2979
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SHA512
7aa1ce88157ffdc496c7c9baa4a8821cea1eb92263da3da7607ebf066bc1c05049e79d091afd8987cd7238bcba85c73bc878bf39db594d59a54de47c386df934
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SSDEEP
12288:2O7tM4o6Xr6uYMzeAj9CKBx/qIf6LOQH9IdIJLgepioUTrHYDH0PCI9oNN+k0oY9:97tBevMtcKBJqTaQd4IJjwoUT0DUPCHR
Static task
static1
Behavioral task
behavioral1
Sample
1a580f049a51caef8faa708561d48b4f55e5af53c71ce086424f49db014c2979.exe
Resource
win10v2004-20230220-en
Malware Config
Extracted
djvu
http://zexeq.com/raud/get.php
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extension
.coza
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offline_id
O8Ao46dcCReRPC4I1PGMYsRFFc9WI5eOp0O3MFt1
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payload_url
http://colisumy.com/dl/build2.exe
http://zexeq.com/files/1/build3.exe
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ransomnote
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Extracted
vidar
3.5
bf58e1879f88b222ba2391682babf9d8
https://steamcommunity.com/profiles/76561199497218285
https://t.me/tg_duckworld
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profile_id_v2
bf58e1879f88b222ba2391682babf9d8
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user_agent
Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.93 Safari/537.36 Vivaldi/3.7
Targets
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Target
1a580f049a51caef8faa708561d48b4f55e5af53c71ce086424f49db014c2979
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Size
743KB
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MD5
667f32aa7b259dec08674013a42d78ba
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SHA1
50cb3dbf6a9930ecf3a9ca9f50af3b12226941ec
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SHA256
1a580f049a51caef8faa708561d48b4f55e5af53c71ce086424f49db014c2979
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SHA512
7aa1ce88157ffdc496c7c9baa4a8821cea1eb92263da3da7607ebf066bc1c05049e79d091afd8987cd7238bcba85c73bc878bf39db594d59a54de47c386df934
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SSDEEP
12288:2O7tM4o6Xr6uYMzeAj9CKBx/qIf6LOQH9IdIJLgepioUTrHYDH0PCI9oNN+k0oY9:97tBevMtcKBJqTaQd4IJjwoUT0DUPCHR
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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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Loads dropped DLL
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Modifies file permissions
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Adds Run key to start application
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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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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