General

  • Target
    ByteBreaker.exe
  • Size 4.2MB
  • Sample260730-3xgxvszbpb
  • SHA256 805dc1a54e38543c64d7639b428cd4b17ccdb6521dfea2133ea9f3f5ccac8091
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      ByteBreaker.exe
    • Size 4.2MB
    • SHA256 805dc1a54e38543c64d7639b428cd4b17ccdb6521dfea2133ea9f3f5ccac8091
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • 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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks whether UAC is enabled

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v16

Tasks