General

  • Target

    https://cdn.discordapp.com/attachments/1255285720042442864/1255532278541582336/revival.rar?ex=667d790d&is=667c278d&hm=0add3c927ace34fc380b174a7f51042773b200c8c4c11af02d32165f024c6a54&

  • Sample

    240629-dq9xmazcnh

Malware Config

Extracted

Family

44caliber

C2

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

Targets

    • Target

      https://cdn.discordapp.com/attachments/1255285720042442864/1255532278541582336/revival.rar?ex=667d790d&is=667c278d&hm=0add3c927ace34fc380b174a7f51042773b200c8c4c11af02d32165f024c6a54&

    • 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.

    • Checks computer location settings

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

    • 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