General
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Target
c20b182b12a284a528946530d2fdfd3944eeb889d29f04169f772c49fa5d18c1
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Size
757KB
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Sample
240328-q58pbsgg65
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MD5
a339a766b9651ea43499086245682a9c
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SHA1
911115a4beda786c7f70ac5818715641d291cf1d
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SHA256
c20b182b12a284a528946530d2fdfd3944eeb889d29f04169f772c49fa5d18c1
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SHA512
ee50c59e94e4d5919b2b61ac16896aea54fed3c55bb33b830c1bd07618a2a6f9ea1fd363ddc1a2f2f05bdb87b09332d4b6305bc951e780bc414198ba62c7caa4
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SSDEEP
12288:0LKAW96Zavv1vnLO32gi9irj/mkEoxX9hsINTLYw1BY+5YUOU2a2YucQo7bnRR4t:09TKvnLBgginOk9hsbwTY+5YR5aKQ7bj
Static task
static1
Behavioral task
behavioral1
Sample
c20b182b12a284a528946530d2fdfd3944eeb889d29f04169f772c49fa5d18c1.exe
Resource
win10v2004-20240319-en
Behavioral task
behavioral2
Sample
c20b182b12a284a528946530d2fdfd3944eeb889d29f04169f772c49fa5d18c1.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
c20b182b12a284a528946530d2fdfd3944eeb889d29f04169f772c49fa5d18c1
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Size
757KB
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MD5
a339a766b9651ea43499086245682a9c
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SHA1
911115a4beda786c7f70ac5818715641d291cf1d
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SHA256
c20b182b12a284a528946530d2fdfd3944eeb889d29f04169f772c49fa5d18c1
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SHA512
ee50c59e94e4d5919b2b61ac16896aea54fed3c55bb33b830c1bd07618a2a6f9ea1fd363ddc1a2f2f05bdb87b09332d4b6305bc951e780bc414198ba62c7caa4
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SSDEEP
12288:0LKAW96Zavv1vnLO32gi9irj/mkEoxX9hsINTLYw1BY+5YUOU2a2YucQo7bnRR4t:09TKvnLBgginOk9hsbwTY+5YR5aKQ7bj
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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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