General
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Target
XClient111.exe
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Size
75KB
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Sample
241204-w9tzmavpbv
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MD5
1c7d67e357a4c6f86fde169b8fa74639
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SHA1
4168ae0daa5e17cd0928c7542e49bde8490acdb9
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SHA256
4094fea68e7a41431fe15eaf1ebbf4d88d20c10e01d4c32e4b466757e626964f
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SHA512
a9b87f16bd144568182d2f2dc19855d57be54b73f3066cbfc299f6132b41cd2cd49fdd4d2921d2dedf17b05f5a244c9b41dc8ff500140cbe760e11daf9038205
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SSDEEP
1536:9zpyggc1VrFL5n1yubpKAXcbK8ni9o26XvmOpqKnKE1J:9lEaFVn1zbzsbKh9oPvmOIiJ
Behavioral task
behavioral1
Sample
XClient111.exe
Resource
win10ltsc2021-20241023-en
Malware Config
Extracted
xworm
5.166.171.54:5552
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Install_directory
%Temp%
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install_file
CelestialUpdate.exe
Extracted
xworm
3.0
plus-loves.gl.at.ply.gg:59327
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Install_directory
%AppData%
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install_file
USB.exe
Targets
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Target
XClient111.exe
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Size
75KB
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MD5
1c7d67e357a4c6f86fde169b8fa74639
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SHA1
4168ae0daa5e17cd0928c7542e49bde8490acdb9
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SHA256
4094fea68e7a41431fe15eaf1ebbf4d88d20c10e01d4c32e4b466757e626964f
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SHA512
a9b87f16bd144568182d2f2dc19855d57be54b73f3066cbfc299f6132b41cd2cd49fdd4d2921d2dedf17b05f5a244c9b41dc8ff500140cbe760e11daf9038205
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SSDEEP
1536:9zpyggc1VrFL5n1yubpKAXcbK8ni9o26XvmOpqKnKE1J:9lEaFVn1zbzsbKh9oPvmOIiJ
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DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
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Dcrat family
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Detect Xworm Payload
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Modifies WinLogon for persistence
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Process spawned unexpected child process
This typically indicates the parent process was compromised via an exploit or macro.
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Xworm family
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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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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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Drops startup file
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Executes dropped EXE
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Adds Run key to start application
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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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Drops file in System32 directory
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MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1