General
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Target
https://github.com/pepeleaks/Wizard-Crypter
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Sample
240504-zskw6sbb2x
Static task
static1
URLScan task
urlscan1
Behavioral task
behavioral1
Sample
https://github.com/pepeleaks/Wizard-Crypter
Resource
win11-20240419-en
Malware Config
Targets
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Target
https://github.com/pepeleaks/Wizard-Crypter
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Dharma
Dharma is a ransomware that uses security software installation to hide malicious activities.
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Suspicious use of NtCreateProcessExOtherParentProcess
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Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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Renames multiple (598) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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mimikatz is an open source tool to dump credentials on Windows
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Creates new service(s)
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Downloads MZ/PE file
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Drops file in Drivers directory
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Sets service image path in registry
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Uses Session Manager for persistence
Creates Session Manager registry key to run executable early in system boot.
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ACProtect 1.3x - 1.4x DLL software
Detects file using ACProtect software.
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Drops startup file
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Executes dropped EXE
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Identifies Wine through registry keys
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
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Loads dropped DLL
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Registers COM server for autorun
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Adds Run key to start application
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Checks for any installed AV software in registry
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops desktop.ini file(s)
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Legitimate hosting services abused for malware hosting/C2
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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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Drops file in System32 directory
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Suspicious use of NtSetInformationThreadHideFromDebugger
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MITRE ATT&CK Matrix ATT&CK v13
Execution
Windows Management Instrumentation
1System Services
2Service Execution
2Scheduled Task/Job
1Persistence
Create or Modify System Process
2Windows Service
2Boot or Logon Autostart Execution
4Registry Run Keys / Startup Folder
4Pre-OS Boot
1Bootkit
1Scheduled Task/Job
1Privilege Escalation
Create or Modify System Process
2Windows Service
2Boot or Logon Autostart Execution
4Registry Run Keys / Startup Folder
4Scheduled Task/Job
1Defense Evasion
Indicator Removal
2File Deletion
2Virtualization/Sandbox Evasion
2Modify Registry
6Impair Defenses
2Disable or Modify Tools
1Pre-OS Boot
1Bootkit
1Subvert Trust Controls
1Install Root Certificate
1