General

  • Target

    https://cdn.discordapp.com/attachments/1251265775147155476/1251476669148037243/SolaraB2.zip?ex=666eb7f9&is=666d6679&hm=61d1ab001ff3defffe4852024a8fa7c530e3abe328431ecdffb64f61e2620e59&

  • Sample

    240615-mbebvazhjr

Malware Config

Targets

    • Target

      https://cdn.discordapp.com/attachments/1251265775147155476/1251476669148037243/SolaraB2.zip?ex=666eb7f9&is=666d6679&hm=61d1ab001ff3defffe4852024a8fa7c530e3abe328431ecdffb64f61e2620e59&

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

    • Downloads MZ/PE file

    • Checks BIOS information in registry

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Blocklisted process makes network request

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks whether UAC is enabled

    • 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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks