General
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Target
file.exe
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Size
789KB
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Sample
230606-adq27sbc62
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MD5
137e707783879de538ad9625a94eecd7
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SHA1
e383991eb5b62d36ff447e231fd48abfa6cedc56
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SHA256
8e50809f79d9ae944f80e9c4ce75e1dde928ddf4e34663607bccc7463d922f27
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SHA512
b9af0cdfbb15a75f9d2f9f2ce8633e530ea707a0f0c4952baf6f44bed4f9eebd83ccd1dfd32d73da5484f3729bdad672ca4f9bfc198b1f5759957aa4a547a76e
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SSDEEP
12288:+Nc29/j7tgikbNd6wE0hFvdPHZpXXYVAetqH5IHjbQ6eSwowyyCyDxtdHbgEInh:iRXt0bXbhFvBX6Aqt9eBz8yDtMfnhA
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20230220-en
Malware Config
Extracted
djvu
http://zexeq.com/test1/get.php
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extension
.nerz
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offline_id
0vTA6MA1m5nzrdffOCJC7YmAa4Lp6YNN8lOJ4mt1
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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
4.1
77a63e71a10ee1d81a28b5c866b75922
https://steamcommunity.com/profiles/76561199510444991
https://t.me/task4manager
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profile_id_v2
77a63e71a10ee1d81a28b5c866b75922
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user_agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36 Edg/112.0.1722.34
Targets
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Target
file.exe
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Size
789KB
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MD5
137e707783879de538ad9625a94eecd7
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SHA1
e383991eb5b62d36ff447e231fd48abfa6cedc56
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SHA256
8e50809f79d9ae944f80e9c4ce75e1dde928ddf4e34663607bccc7463d922f27
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SHA512
b9af0cdfbb15a75f9d2f9f2ce8633e530ea707a0f0c4952baf6f44bed4f9eebd83ccd1dfd32d73da5484f3729bdad672ca4f9bfc198b1f5759957aa4a547a76e
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SSDEEP
12288:+Nc29/j7tgikbNd6wE0hFvdPHZpXXYVAetqH5IHjbQ6eSwowyyCyDxtdHbgEInh:iRXt0bXbhFvBX6Aqt9eBz8yDtMfnhA
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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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