General

  • Target

    http://Scan vps

  • Sample

    240721-jtg9nsyckq

Malware Config

Extracted

Family

bitrat

Version

1.38

C2

158.58.168.61:1337

Attributes
  • communication_password

    2fdbb4b27758a54f27d8f8cbb485787b

  • install_dir

    system32

  • install_file

    Windows Update.exe

  • tor_process

    tor

Targets

    • BitRAT

      BitRAT is a remote access tool written in C++ and uses leaked source code from other families.

    • Detect Neshta payload

    • Neshta

      Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

    • Contacts a large (10300) amount of remote hosts

      This may indicate a network scan to discover remotely running services.

    • Creates a large amount of network flows

      This may indicate a network scan to discover remotely running services.

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

    • Drops file in Drivers directory

    • Checks BIOS information in registry

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

    • Executes dropped EXE

    • Identifies Wine through registry keys

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

    • Loads dropped DLL

    • Modifies system executable filetype association

    • Reads user/profile data of web browsers

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

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Adds Run key to start application

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks