General
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Target
DCRatBuild.exe
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Size
3.0MB
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Sample
240724-sakecsvcqf
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MD5
9056618a634ae845b6a795a72f18acf4
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SHA1
aca91e2d77b62bffd6d9d2031181edb5d010288b
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SHA256
9b9a97772a741c60cbca3714a65d59c4b1e768ab1e4f434511d9c05540a579fd
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SHA512
863ba6e461ab706ea882316d7f36a17ae62dd5f7eb150dcb1e3b426e7479b385525c3979dc33e60e3d9ed2c4d2799d1f8a85f04892524befa3aec4c380fd0f92
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SSDEEP
49152:UbA30gFb062ieTHD5br1BMPhfekJS+8N/bkLmKK+GOF1hvBP2VzhPJF:UbXX1bZ2PMLLjB+G4hvp21Fz
Behavioral task
behavioral1
Sample
DCRatBuild.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
DCRatBuild.exe
Resource
win10v2004-20240704-en
Malware Config
Targets
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Target
DCRatBuild.exe
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Size
3.0MB
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MD5
9056618a634ae845b6a795a72f18acf4
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SHA1
aca91e2d77b62bffd6d9d2031181edb5d010288b
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SHA256
9b9a97772a741c60cbca3714a65d59c4b1e768ab1e4f434511d9c05540a579fd
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SHA512
863ba6e461ab706ea882316d7f36a17ae62dd5f7eb150dcb1e3b426e7479b385525c3979dc33e60e3d9ed2c4d2799d1f8a85f04892524befa3aec4c380fd0f92
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SSDEEP
49152:UbA30gFb062ieTHD5br1BMPhfekJS+8N/bkLmKK+GOF1hvBP2VzhPJF:UbXX1bZ2PMLLjB+G4hvp21Fz
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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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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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Credentials from Password Stores: Credentials from Web Browsers
Malicious Access or copy of Web Browser Credential store.
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Disables Task Manager via registry modification
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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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Adds Run key to start application
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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
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
5Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1