General
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Target
fd4f52d47c9515b51f3d512235609b7396971b84252f431c5fa2b61f7d35e359
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Size
745KB
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Sample
230618-ztl6mahg29
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MD5
5dc6dfac340ac9102e72d8459b5264a1
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SHA1
2a6313744c697ce4e4bbc766639cf905a9b1deb6
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SHA256
fd4f52d47c9515b51f3d512235609b7396971b84252f431c5fa2b61f7d35e359
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SHA512
f635731a7c717766ee8811c69e92055c3fb4930eb0673962c01e3282fa9880823d671f026f73f0d47dfff472c8f7038875cb36c4cb8aed72bb5ce2d01400c3e8
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SSDEEP
12288:RhAu1f0lUBmtyq7C4yuQ7qD+wFbSoKJRBgD9dzFKT0D9DbR9:RhAuoUMtyoFtrIFjm95FKgBvR
Static task
static1
Behavioral task
behavioral1
Sample
fd4f52d47c9515b51f3d512235609b7396971b84252f431c5fa2b61f7d35e359.exe
Resource
win10v2004-20230221-en
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
fd4f52d47c9515b51f3d512235609b7396971b84252f431c5fa2b61f7d35e359
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Size
745KB
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MD5
5dc6dfac340ac9102e72d8459b5264a1
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SHA1
2a6313744c697ce4e4bbc766639cf905a9b1deb6
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SHA256
fd4f52d47c9515b51f3d512235609b7396971b84252f431c5fa2b61f7d35e359
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SHA512
f635731a7c717766ee8811c69e92055c3fb4930eb0673962c01e3282fa9880823d671f026f73f0d47dfff472c8f7038875cb36c4cb8aed72bb5ce2d01400c3e8
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SSDEEP
12288:RhAu1f0lUBmtyq7C4yuQ7qD+wFbSoKJRBgD9dzFKT0D9DbR9:RhAuoUMtyoFtrIFjm95FKgBvR
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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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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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