General

  • Target
    Solara-main.zip
  • Size 401KB
  • Sample240630-pyvy8a1enk
  • SHA256 16cca0f0005d05175568adc4d1927ccf9a1775f51a67bf0e28e38df042d205d2
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • 44caliber

C2
  • https://discord.com/api/webhooks/1169713279464120370/GUIw2wEmQMllUHEfRf3MNeS3DBNrZN-RuTQ9QbFfAqIZNVHtIlkj1yiD5QqgrIlv8gQi

Targets

    • Target
      Solara-main.zip
    • Size 401KB
    • SHA256 16cca0f0005d05175568adc4d1927ccf9a1775f51a67bf0e28e38df042d205d2
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      Solara-main/README.md
    • Size 1KB
    • SHA256 072856d085b8184cd4df7e53ec4d74df81c3ee4b31435f52d13b2d23ae0ddc40
    • MD5 SHA1 SHA512
    Score
    3/10
    • Target
      Solara-main/Solara.zip
    • Size 400KB
    • SHA256 65dcaf8699e4d8d8aaa1c177fc49bfe4ff69ad4fd3891d61f68c5239e217cb14
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      Solara/SolaraB/SolaraBootstrapper.exe
    • Size 826KB
    • SHA256 286b6d3aa77caa78854b3648d96d80a1f207d7b94fb54103b44600a6f72839b5
    • MD5 SHA1 SHA512 SSDEEP
    • 44Caliber

      An open source infostealer written in C#.

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

    • Checks BIOS information in registry

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

    • 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.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks whether UAC is enabled

    • 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.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks