General
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Target
CL_Installer1.0.exe
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Size
35.9MB
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Sample
240622-ptjqdsybmb
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MD5
826f0286ed14785ecd3fed6dd678eb16
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SHA1
fe8693146e92c20c58ef0ec99ccaddae0366d8cd
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SHA256
8e9de4ec550d77ff22c6c252c6f82ca8ef3ed7a5202950577451aed287b71504
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SHA512
3a373329883505bd77e14c69f9f719b600cce5f59eff27cc4f4916ddbec184235d19214916830031e7560fed0038a67b30115ea33a7211355682b2c58d2544c1
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SSDEEP
786432:CQ+HRamFgny3dwZ3mX7aIZkp8m7Ex015UlI2d/4niKRQA:C/HR5twZ3mXWbml015Ull2iKV
Static task
static1
Behavioral task
behavioral1
Sample
CL_Installer1.0.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
CL_Installer1.0.exe
Resource
win10v2004-20240508-en
Malware Config
Targets
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Target
CL_Installer1.0.exe
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Size
35.9MB
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MD5
826f0286ed14785ecd3fed6dd678eb16
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SHA1
fe8693146e92c20c58ef0ec99ccaddae0366d8cd
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SHA256
8e9de4ec550d77ff22c6c252c6f82ca8ef3ed7a5202950577451aed287b71504
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SHA512
3a373329883505bd77e14c69f9f719b600cce5f59eff27cc4f4916ddbec184235d19214916830031e7560fed0038a67b30115ea33a7211355682b2c58d2544c1
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SSDEEP
786432:CQ+HRamFgny3dwZ3mX7aIZkp8m7Ex015UlI2d/4niKRQA:C/HR5twZ3mXWbml015Ull2iKV
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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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Suspicious use of NtCreateUserProcessOtherParentProcess
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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XMRig Miner payload
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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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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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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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Power Settings
powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.
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Drops file in System32 directory
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Suspicious use of NtSetInformationThreadHideFromDebugger
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1System Services
1Service Execution
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Power Settings
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Scheduled Task
1