General
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Target
4a7e93517c69ba331bd816159caa16524903ea49a8a2ea2b01e89f744894e6f0.zip
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Size
1.3MB
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Sample
241207-1yzsys1phm
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MD5
7a430006c4d2c7ecdffd1e0698f8b13a
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SHA1
90e4d8c00a12db86ffa44a232e80aa9abc4511a8
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SHA256
28053f0b254f2ecc8d8a74e4de2af17fa3d6a746fbecf7ac173891663c95f994
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SHA512
20708b3c6f3782c709237a02af1775124ecfb0065f76094339ec92e0a04357040a3db59192dca5b31bb8b7061e2cede1e894aa7c6997de5fb6b85d079ea93b63
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SSDEEP
24576:zkSSJ36G2CL8FEv55vrbl0bStR+BYcnSPqbNPPmcVQmmFqGOLbWVq3eJdgtJ:J1HFOriStR+BYmSPUphVQmUYLK0cgtJ
Malware Config
Targets
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Target
4a7e93517c69ba331bd816159caa16524903ea49a8a2ea2b01e89f744894e6f0.exe
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Size
1.8MB
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MD5
2f7a0b0d633254c477f9d8650d485d11
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SHA1
1ce7e5c3989077d2965d9aac2a256f9930e5b98f
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SHA256
4a7e93517c69ba331bd816159caa16524903ea49a8a2ea2b01e89f744894e6f0
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SHA512
b6141e51687d39942fb04f593c7bb2c0a7ec9e0bc53200f22e4d4c94fdb5ce55aed3169ca35d014fb746089bd2087f585ad3f057931642650ff0063195054299
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SSDEEP
49152:VbA3GzW8NA/VUPoFVwrIIV+DJGfZ19qigh:Vbs8NA/VUPoXIV+Dwbwfh
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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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Process spawned unexpected child process
This typically indicates the parent process was compromised via an exploit or macro.
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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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Executes dropped EXE
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MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
3