General
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Target
a387afc512e7f898d15e40039ca07bebf2e8dae9b726cd4915be45d1e81f52ea
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Size
781KB
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Sample
230618-rach3sgf8x
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MD5
8e21207b426f7f6a132c495a99ad3d1e
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SHA1
f0d0960eee4c47bc08f21f12f54a525b19590e87
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SHA256
a387afc512e7f898d15e40039ca07bebf2e8dae9b726cd4915be45d1e81f52ea
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SHA512
2ba5b9182203af460649534cf6cfdf12d20af7bf376ca7dfac92a922a8d1b4cc9b493a7f6aeb221a8b3a347aaee1dd7502ce936969a0e8dad847e3d141145dfb
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SSDEEP
12288:w2IbWi7xFgC74/STcouiPd6HA8BHYfM6Qpo9m8eLZqqM43UqQ:LW7PgfCcop1+A8B4mp3q143w
Malware Config
Extracted
djvu
http://zexeq.com/test1/get.php
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extension
.ahtw
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offline_id
vPWUuYIO6Lzy2cGt8zL7FERKTf4QMBPjn7F005t1
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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
4.3
a129a8292a021d62796bfced1018aa1f
https://steamcommunity.com/profiles/76561199514261168
https://t.me/kamaprimo
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profile_id_v2
a129a8292a021d62796bfced1018aa1f
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user_agent
Mozilla/5.0 (Linux; U; Tizen 2.0; en-us) AppleWebKit/537.1 (KHTML, like Gecko) Mobile TizenBrowser/2.0
Targets
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Target
a387afc512e7f898d15e40039ca07bebf2e8dae9b726cd4915be45d1e81f52ea
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Size
781KB
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MD5
8e21207b426f7f6a132c495a99ad3d1e
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SHA1
f0d0960eee4c47bc08f21f12f54a525b19590e87
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SHA256
a387afc512e7f898d15e40039ca07bebf2e8dae9b726cd4915be45d1e81f52ea
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SHA512
2ba5b9182203af460649534cf6cfdf12d20af7bf376ca7dfac92a922a8d1b4cc9b493a7f6aeb221a8b3a347aaee1dd7502ce936969a0e8dad847e3d141145dfb
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SSDEEP
12288:w2IbWi7xFgC74/STcouiPd6HA8BHYfM6Qpo9m8eLZqqM43UqQ:LW7PgfCcop1+A8B4mp3q143w
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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Accesses cryptocurrency files/wallets, 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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