General
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Target
Nurik.exe
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Size
210KB
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Sample
240522-v3fb8aae64
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MD5
bb252d8aa4f5834229ea080c11db0b59
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SHA1
7de57dfc07520a7f3013abc807446e8611914812
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SHA256
ae2ab592c449e18dd57692ae43b247ab02f5003ee170c87f82168d2aa6e03b8c
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SHA512
0e9aa28aeb33328b7b7140a461b45e4a211cb68326130e174b54dd260d3f44323a3ab86f16571e0b0e55c9597f293b9a5d085e1bb01f4fbe2cdb2b20080e4c5a
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SSDEEP
3072:tXbHXK681mboHFtHODlewZp0EAVHLqaHSegMc11irm+uhdtNp+5hBu:tXb6Ib2ewwZpTEH+NvlNpoh
Behavioral task
behavioral1
Sample
Nurik.exe
Resource
win11-20240426-en
Malware Config
Extracted
xworm
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Install_directory
%AppData%
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install_file
USB.exe
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pastebin_url
https://pastebin.com/raw/cVQrB6DR
Targets
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Target
Nurik.exe
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Size
210KB
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MD5
bb252d8aa4f5834229ea080c11db0b59
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SHA1
7de57dfc07520a7f3013abc807446e8611914812
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SHA256
ae2ab592c449e18dd57692ae43b247ab02f5003ee170c87f82168d2aa6e03b8c
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SHA512
0e9aa28aeb33328b7b7140a461b45e4a211cb68326130e174b54dd260d3f44323a3ab86f16571e0b0e55c9597f293b9a5d085e1bb01f4fbe2cdb2b20080e4c5a
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SSDEEP
3072:tXbHXK681mboHFtHODlewZp0EAVHLqaHSegMc11irm+uhdtNp+5hBu:tXb6Ib2ewwZpTEH+NvlNpoh
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Detect Xworm Payload
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Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
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Disables Task Manager via registry modification
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Drops startup file
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Executes dropped EXE
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Adds Run key to start application
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Legitimate hosting services abused for malware hosting/C2
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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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Modifies WinLogon
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Sets desktop wallpaper using registry
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1