General
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Target
e5b4706b122d25bb5f950500705d11c184be12e58ea5a6921f50b3a1711e947e
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Size
819KB
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Sample
230505-yy2lfaeb3y
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MD5
49c4afca6a0fefeac7c3b0b070d5ce9e
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SHA1
ffbf4e65c838b69d00d00224ab2639d1126ca848
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SHA256
e5b4706b122d25bb5f950500705d11c184be12e58ea5a6921f50b3a1711e947e
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SHA512
d9f723e6d231016507469acb4feb4631c6b3c285a852c94d5416ac6b2867379333fa35c8f9e501db919bc0d68e34ba6a61c8f86618882aba96da37978cf848dd
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SSDEEP
12288:W4KUnjgijgV1SLusb41TFb/xkz73+z54EINxrKAwsTDaPdyS4+nj/gTn:KYjgicVAZ6r+H858NlApwKgz
Malware Config
Extracted
djvu
http://zexeq.com/test1/get.php
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extension
.sato
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offline_id
GdcTFG029NGZ36LGVnRuxctpZuCpnW1SW5kiOCt1
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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
3.7
31c7719b5ee962fbde376b75e771360d
https://steamcommunity.com/profiles/76561199501059503
https://t.me/mastersbots
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profile_id_v2
31c7719b5ee962fbde376b75e771360d
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user_agent
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/112.0
Targets
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Target
e5b4706b122d25bb5f950500705d11c184be12e58ea5a6921f50b3a1711e947e
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Size
819KB
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MD5
49c4afca6a0fefeac7c3b0b070d5ce9e
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SHA1
ffbf4e65c838b69d00d00224ab2639d1126ca848
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SHA256
e5b4706b122d25bb5f950500705d11c184be12e58ea5a6921f50b3a1711e947e
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SHA512
d9f723e6d231016507469acb4feb4631c6b3c285a852c94d5416ac6b2867379333fa35c8f9e501db919bc0d68e34ba6a61c8f86618882aba96da37978cf848dd
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SSDEEP
12288:W4KUnjgijgV1SLusb41TFb/xkz73+z54EINxrKAwsTDaPdyS4+nj/gTn:KYjgicVAZ6r+H858NlApwKgz
Score10/10-
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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Loads dropped DLL
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Modifies file permissions
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Reads user/profile data of web browsers
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses 2FA software files, possible credential harvesting
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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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