General
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Target
4b1967b04039c9b7a23651043b38c895cca2eb560de30a960368f82549079605.exe
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Size
855KB
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Sample
241104-csbl6s1cmd
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MD5
5780dbae6ac61a88c8d89f216f324146
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SHA1
cebcebedc7aaea3a4dd1fbec933cd169bf92e9dc
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SHA256
4b1967b04039c9b7a23651043b38c895cca2eb560de30a960368f82549079605
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SHA512
8a595384247649e31ef0c69a63243199d224334d75b66fd486a8e6ba0ac3c2b5521e1ead4b64fb9c968c21a4836581dde10e78f36217b62862c40bed2d105920
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SSDEEP
12288:I/TnPz84JfpflKH6qHJJMA+7pW3Ari4VVyZC0+1cp9rcDNpTWDTQGCZ6:I/TnzfS6qpJMA+73iE0nTr66
Behavioral task
behavioral1
Sample
4b1967b04039c9b7a23651043b38c895cca2eb560de30a960368f82549079605.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
4b1967b04039c9b7a23651043b38c895cca2eb560de30a960368f82549079605.exe
Resource
win10v2004-20241007-en
Malware Config
Targets
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Target
4b1967b04039c9b7a23651043b38c895cca2eb560de30a960368f82549079605.exe
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Size
855KB
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MD5
5780dbae6ac61a88c8d89f216f324146
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SHA1
cebcebedc7aaea3a4dd1fbec933cd169bf92e9dc
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SHA256
4b1967b04039c9b7a23651043b38c895cca2eb560de30a960368f82549079605
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SHA512
8a595384247649e31ef0c69a63243199d224334d75b66fd486a8e6ba0ac3c2b5521e1ead4b64fb9c968c21a4836581dde10e78f36217b62862c40bed2d105920
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SSDEEP
12288:I/TnPz84JfpflKH6qHJJMA+7pW3Ari4VVyZC0+1cp9rcDNpTWDTQGCZ6:I/TnzfS6qpJMA+73iE0nTr66
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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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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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DCRat payload
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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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Adds Run key to start application
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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
Persistence
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
1Defense Evasion
Modify Registry
3Subvert Trust Controls
1Install Root Certificate
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1