General
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Target
https://raw.githubusercontent.com/ByterCode/Solara-Excutor/refs/heads/main/Solara%20NEW.zip
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Sample
241024-yndfvssclj
Static task
static1
URLScan task
urlscan1
Behavioral task
behavioral1
Sample
https://raw.githubusercontent.com/ByterCode/Solara-Excutor/refs/heads/main/Solara%20NEW.zip
Resource
win10ltsc2021-20241023-en
Malware Config
Extracted
asyncrat
1.0.7
Roblox
DcRatMutex_qwqdanchun
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delay
1
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install
true
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install_file
svchost.exe
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install_folder
%AppData%
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pastebin_config
https://pastebin.com/raw/rACMKa5f
Targets
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Target
https://raw.githubusercontent.com/ByterCode/Solara-Excutor/refs/heads/main/Solara%20NEW.zip
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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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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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Async RAT 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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Drops file in Drivers directory
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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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Clipboard Data
Adversaries may collect data stored in the clipboard from users copying information within or between applications.
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Drops startup file
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Executes dropped EXE
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Loads dropped DLL
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Unsecured Credentials: Credentials In Files
Steal credentials from unsecured files.
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Accesses cryptocurrency files/wallets, possible credential harvesting
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Adds Run key to start application
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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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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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Obfuscated Files or Information: Command Obfuscation
Adversaries may obfuscate content during command execution to impede detection.
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Drops file in System32 directory
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Enumerates processes with tasklist
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Hide Artifacts: Hidden Files and Directories
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MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
3PowerShell
2Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Event Triggered Execution
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Event Triggered Execution
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Hide Artifacts
3Hidden Files and Directories
3Impair Defenses
1Modify Registry
3Obfuscated Files or Information
1Command Obfuscation
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
3Credentials In Files
3Discovery
Browser Information Discovery
1Peripheral Device Discovery
1Process Discovery
1Query Registry
5Remote System Discovery
1System Information Discovery
7System Location Discovery
1System Language Discovery
1System Network Configuration Discovery
2Internet Connection Discovery
1Wi-Fi Discovery
1