General
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Target
bf9a0318b87d9bda27e09bfd80dad25f2a1ee21760d9fbb792d56d57649e30f8
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Size
784KB
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Sample
240328-gqwlsaef4v
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MD5
ba5b793d6642c48ac44bae86013a503a
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SHA1
c054b761baa909c8d461ed9d6a0b90e852e6593a
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SHA256
bf9a0318b87d9bda27e09bfd80dad25f2a1ee21760d9fbb792d56d57649e30f8
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SHA512
495f3083f851aaffef820af4318e41ca7b61341e8f233f7fd669c06eb32830ccf021b990ff165fe3e6ecd239262a84b07b366ca9b05f3a0b145442fe8f177203
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SSDEEP
24576:9P4GDSQa8SvD12PKhwXAMDl/KsY9kvvj:NjDnaTUKhwXAMdKsY9kH
Static task
static1
Behavioral task
behavioral1
Sample
bf9a0318b87d9bda27e09bfd80dad25f2a1ee21760d9fbb792d56d57649e30f8.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
bf9a0318b87d9bda27e09bfd80dad25f2a1ee21760d9fbb792d56d57649e30f8.exe
Resource
win11-20240221-en
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
bf9a0318b87d9bda27e09bfd80dad25f2a1ee21760d9fbb792d56d57649e30f8
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Size
784KB
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MD5
ba5b793d6642c48ac44bae86013a503a
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SHA1
c054b761baa909c8d461ed9d6a0b90e852e6593a
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SHA256
bf9a0318b87d9bda27e09bfd80dad25f2a1ee21760d9fbb792d56d57649e30f8
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SHA512
495f3083f851aaffef820af4318e41ca7b61341e8f233f7fd669c06eb32830ccf021b990ff165fe3e6ecd239262a84b07b366ca9b05f3a0b145442fe8f177203
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SSDEEP
24576:9P4GDSQa8SvD12PKhwXAMDl/KsY9kvvj:NjDnaTUKhwXAMdKsY9kH
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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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