General
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Target
Bootstrapper (1).exe
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Size
4.5MB
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Sample
241111-plyjksyhkn
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MD5
7c4f42168b6b77b79cec709462d83822
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SHA1
fe554500b94cb7e3b3ecb373fbbfec6bdf9228df
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SHA256
22de9a0aef3424a7ad95dfab9b8cfa8275e02083db45647aa8a953a2a6393007
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SHA512
2b8103bdc5ef177527c5b9889517c004f3d50fd534cd7cd180556ae348bebf16e471459205800932aa3230987d82060e79b9be78aa9a5bbb50d93b6ac5e58a4b
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SSDEEP
98304:VxkPiumssqzvNazqd81WLyWesy7flqtWRa:kKnsL7Ld1LTehbnR
Static task
static1
Behavioral task
behavioral1
Sample
Bootstrapper (1).exe
Resource
win10ltsc2021-20241023-en
Malware Config
Targets
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Target
Bootstrapper (1).exe
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Size
4.5MB
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MD5
7c4f42168b6b77b79cec709462d83822
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SHA1
fe554500b94cb7e3b3ecb373fbbfec6bdf9228df
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SHA256
22de9a0aef3424a7ad95dfab9b8cfa8275e02083db45647aa8a953a2a6393007
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SHA512
2b8103bdc5ef177527c5b9889517c004f3d50fd534cd7cd180556ae348bebf16e471459205800932aa3230987d82060e79b9be78aa9a5bbb50d93b6ac5e58a4b
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SSDEEP
98304:VxkPiumssqzvNazqd81WLyWesy7flqtWRa:kKnsL7Ld1LTehbnR
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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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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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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