General
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Target
https://gofile.io/d/YHZWCx
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Sample
250107-y9yzpayrdn
Static task
static1
URLScan task
urlscan1
Behavioral task
behavioral1
Sample
https://gofile.io/d/YHZWCx
Resource
win11-20241007-en
Malware Config
Extracted
asyncrat
| Edit 3LOSH RAT
Domain
jojo.ath.cx:1414
AsyncMutex_7SI8OkPne
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delay
3
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install
false
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install_file
dllscv.exe
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install_folder
%AppData%
Extracted
quasar
1.4.1
2026
win32updatess.DUCKDNS.ORG:2
b70adc1c-122d-4b90-9f59-304d0ab81cd5
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encryption_key
CE02DB1ED3D345B2461CC2276CDEEDF58EF19723
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install_name
Client.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Quasar Client Startup
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subdirectory
SubDir
Targets
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Target
https://gofile.io/d/YHZWCx
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Asyncrat family
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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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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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Quasar family
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Quasar payload
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Suspicious use of NtCreateProcessExOtherParentProcess
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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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Boot or Logon Autostart Execution: Active Setup
Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
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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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Downloads MZ/PE file
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Drops file in Drivers directory
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Event Triggered Execution: AppInit DLLs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
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Event Triggered Execution: Image File Execution Options Injection
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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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A potential corporate email address has been identified in the URL: 67C716D751E567F70A490D4C@AdobeOrg
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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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Drops startup file
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Event Triggered Execution: Component Object Model Hijacking
Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
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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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Impair Defenses: Safe Mode Boot
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Loads dropped DLL
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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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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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Checks system information in the registry
System information is often read in order to detect sandboxing environments.
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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
1Persistence
Boot or Logon Autostart Execution
5Active Setup
1Registry Run Keys / Startup Folder
3Winlogon Helper DLL
1Event Triggered Execution
3AppInit DLLs
1Component Object Model Hijacking
1Image File Execution Options Injection
1Pre-OS Boot
1Bootkit
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
5Active Setup
1Registry Run Keys / Startup Folder
3Winlogon Helper DLL
1Event Triggered Execution
3AppInit DLLs
1Component Object Model Hijacking
1Image File Execution Options Injection
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Impair Defenses
2Disable or Modify Tools
1Safe Mode Boot
1Modify Registry
7Pre-OS Boot
1Bootkit
1Subvert Trust Controls
1SIP and Trust Provider Hijacking
1Virtualization/Sandbox Evasion
2Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Discovery
Browser Information Discovery
1Network Share Discovery
1Peripheral Device Discovery
1Query Registry
10Remote System Discovery
1Software Discovery
1Security Software Discovery
1System Information Discovery
8System Location Discovery
1System Language Discovery
1System Network Configuration Discovery
1Internet Connection Discovery
1Virtualization/Sandbox Evasion
2