General
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Target
20c7850800ddc743fa24935aaef38148dffa12ac5159f43d10e061e63d4e74f7
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Size
765KB
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Sample
230327-y5ckwsfb29
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MD5
2c9de3b4e6161e99b75c314e33ad66e5
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SHA1
85fb1ec11816fb3c1c69b2679a6f2441e03d540d
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SHA256
20c7850800ddc743fa24935aaef38148dffa12ac5159f43d10e061e63d4e74f7
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SHA512
6d4b7721c111b3b3056410708613f0263eed0105e3de133f56058a8829720cbf4e2f307dda708783e41ad0cddafcf0a59249e840789d4f5f2304c53f47d504bd
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SSDEEP
12288:6nAQJVdKx7cwLQ78yt7PHjZzCN9usFmLditZwCC9WkHLrx/WQO3nJsNVgX90F4:uAE8tEbFiu3LktZvC9hwYVgX9
Static task
static1
Behavioral task
behavioral1
Sample
20c7850800ddc743fa24935aaef38148dffa12ac5159f43d10e061e63d4e74f7.exe
Resource
win10v2004-20230220-en
Malware Config
Extracted
djvu
http://zexeq.com/test2/get.php
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extension
.jywd
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offline_id
MEMHlobHgXqvmTWaMsLcwGZhDOd00bblO1yevst1
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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
3.1
00d92484c9b27bc8482a2cc94cacc508
https://steamcommunity.com/profiles/76561199472266392
https://t.me/tabootalks
http://135.181.26.183:80
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profile_id_v2
00d92484c9b27bc8482a2cc94cacc508
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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
20c7850800ddc743fa24935aaef38148dffa12ac5159f43d10e061e63d4e74f7
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Size
765KB
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MD5
2c9de3b4e6161e99b75c314e33ad66e5
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SHA1
85fb1ec11816fb3c1c69b2679a6f2441e03d540d
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SHA256
20c7850800ddc743fa24935aaef38148dffa12ac5159f43d10e061e63d4e74f7
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SHA512
6d4b7721c111b3b3056410708613f0263eed0105e3de133f56058a8829720cbf4e2f307dda708783e41ad0cddafcf0a59249e840789d4f5f2304c53f47d504bd
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SSDEEP
12288:6nAQJVdKx7cwLQ78yt7PHjZzCN9usFmLditZwCC9WkHLrx/WQO3nJsNVgX90F4:uAE8tEbFiu3LktZvC9hwYVgX9
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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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