General

  • Target
    downloader.exe
  • Size 33.2MB
  • Sample240805-3qwsfawdpg
  • SHA256 ee2f543ac0c6dfe4c050bc8c4c746ee2e249de699064a7079bf0f8bf209a6eda
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Targets

    • Target
      downloader.exe
    • Size 33.2MB
    • SHA256 ee2f543ac0c6dfe4c050bc8c4c746ee2e249de699064a7079bf0f8bf209a6eda
    • MD5 SHA1 SHA512 SSDEEP
    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • System Binary Proxy Execution: Regsvcs/Regasm

      Abuse Regasm to proxy execution of malicious code.

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks