General
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Target
2839da1d389170bbdfac72176404541684bd680f0686588f108b95377137f358
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Size
694KB
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Sample
230403-f3fknach85
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MD5
b2c91ce8faf85400f2ef9209a85d0ae3
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SHA1
90b62cb1fc21a529b1442190f3ccab850cdf202c
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SHA256
2839da1d389170bbdfac72176404541684bd680f0686588f108b95377137f358
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SHA512
a911562becb35455b8848bd6302279f2eb9e14da1cd4fb8237864f8f7994521c8f8f1e3eac26258847b14db4defd90c4977b943eb7befad6072f60c125563ea1
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SSDEEP
12288:wiigeqyBr3R92/UNj3Qcm8Ss4fWYycQHX5/hOVvk6oTDMxOrY:WgPOOTpfLycuX3OGf4xO
Malware Config
Extracted
djvu
http://zexeq.com/test2/get.php
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extension
.nifr
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offline_id
FCP2fiITr4rryFhFBnA59GMgwES5CunmcbPc76t1
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payload_url
http://uaery.top/dl/build2.exe
http://zexeq.com/files/1/build3.exe
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ransomnote
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Extracted
vidar
3.2
5df88deb5dde677ba658b77ad5f60248
https://steamcommunity.com/profiles/76561199489580435
https://t.me/tabootalks
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profile_id_v2
5df88deb5dde677ba658b77ad5f60248
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user_agent
Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36 OPR/91.0.4516.79
Targets
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Target
2839da1d389170bbdfac72176404541684bd680f0686588f108b95377137f358
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Size
694KB
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MD5
b2c91ce8faf85400f2ef9209a85d0ae3
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SHA1
90b62cb1fc21a529b1442190f3ccab850cdf202c
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SHA256
2839da1d389170bbdfac72176404541684bd680f0686588f108b95377137f358
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SHA512
a911562becb35455b8848bd6302279f2eb9e14da1cd4fb8237864f8f7994521c8f8f1e3eac26258847b14db4defd90c4977b943eb7befad6072f60c125563ea1
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SSDEEP
12288:wiigeqyBr3R92/UNj3Qcm8Ss4fWYycQHX5/hOVvk6oTDMxOrY:WgPOOTpfLycuX3OGf4xO
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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