General

  • Target
    ByteBreaker V1_71774249.exe
  • Size 702KB
  • Sample260814-st87tswfkb
  • SHA256 35d5cdf23553b14ad8051f68b1af8199805f06479391888f609af4ed54ed5a63
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      ByteBreaker V1_71774249.exe
    • Size 702KB
    • SHA256 35d5cdf23553b14ad8051f68b1af8199805f06479391888f609af4ed54ed5a63
    • 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.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • 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

    • Contacts third-party web service commonly abused for C2

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

    • Network Share Discovery

      Attempt to gather information on host network.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v16

Tasks