General

  • Target
    build3.exe
  • Size 4.3MB
  • Sample230411-qqbfaacf34
  • SHA256 4b7dffe03a441651449dd62371b84dcc07a7ac63230484f975c1a61ffd48724a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • stealerium

C2
  • https://discord.com/api/webhooks/1095337011210113085/C0_L70xlJzi7l9Ob0rjZIJwwoVheW8puf0IWaKHmLN0VmkKu5b4gmY4dnkp_Sr_WIIDl

Targets

    • Target
      build3.exe
    • Size 4.3MB
    • SHA256 4b7dffe03a441651449dd62371b84dcc07a7ac63230484f975c1a61ffd48724a
    • MD5 SHA1 SHA512 SSDEEP
    • Stealerium

      An open source info stealer written in C# first seen in May 2022.

    • 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.

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook profiles

    • 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 v6

Tasks