hxxps://storage[.]bunnycdn[.]com/projectnova/RtkAudUService64[.]exe?accessKey=cc3d2267-8de0-41f7-b95b991bae4c-5b1c-4537&download

General

Target

https://storage.bunnycdn.com/projectnova/RtkAudUService64.exe?accessKey=cc3d2267-8de0-41f7-b95b991bae4c-5b1c-4537&download
Sample

240818-b2lcasybng

Score

10^/10

Malware Config

Targets

- Target
  
  https://storage.bunnycdn.com/projectnova/RtkAudUService64.exe?accessKey=cc3d2267-8de0-41f7-b95b991bae4c-5b1c-4537&download
Score

10^/10

collection credential_access defense_evasion discovery evasion execution persistence privilege_escalation pyinstaller spyware stealer upx
- Modifies visiblity of hidden/system files in Explorer
  evasion
- Credentials from Password Stores: Credentials from Web Browsers
  Malicious Access or copy of Web Browser Credential store.
  credential_access stealer
- Command and Scripting Interpreter: PowerShell
  Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
  execution
- Downloads MZ/PE file
- Clipboard Data
  Adversaries may collect data stored in the clipboard from users copying information within or between applications.
  collection
- Drops startup file
- Executes dropped EXE
- Loads dropped DLL
- Reads user/profile data of web browsers
  Infostealers often target stored browser data, which can include saved credentials etc.
  spyware stealer
- UPX packed file
  Detects executables packed with UPX/modified UPX open source packer.
  upx
- Unsecured Credentials: Credentials In Files
  Steal credentials from unsecured files.
  credential_access stealer
- Accesses cryptocurrency files/wallets, possible credential harvesting
  spyware
- Adds Run key to start application
  persistence
- Checks installed software on the system
  Looks up Uninstall key entries in the registry to enumerate software on the system.
  discovery
- Enumerates connected drives
  Attempts to read the root path of hard drives other than the default C: drive.
- Legitimate hosting services abused for malware hosting/C2
- Looks up external IP address via web service
  Uses a legitimate IP lookup service to find the infected system's external IP.
- Obfuscated Files or Information: Command Obfuscation
  Adversaries may obfuscate content during command execution to impede detection.
  defense_evasion
- Drops file in System32 directory
- Enumerates processes with tasklist
  discovery
behavioral1