General

  • Target

    random.exe

  • Size

    141KB

  • Sample

    231113-p1yswscf5w

  • MD5

    326781a332c7040492dc96b13fb126e5

  • SHA1

    d03d8e89a6c75a14f512eeabf180a2f69d30e884

  • SHA256

    0f09f8f60741e8b3c28dc927ff1b3318d8faa623d641704b605bc38142f54f28

  • SHA512

    e701babafad09f1115511949f3061275bc6fbc54756d40f038aa9be708ff06736413367395bff7e157035aa9260ada439ad9a8d4c2c48c14de94c42f6ec0c2bc

  • SSDEEP

    3072:Oq+kTdFfyZfJ+xjLkTVXbpL9FCOjrAJDH+9s9uAFfvUC:OkTdZy18JLgXbp9F5bo

Malware Config

Targets

    • Target

      random.exe

    • Size

      141KB

    • MD5

      326781a332c7040492dc96b13fb126e5

    • SHA1

      d03d8e89a6c75a14f512eeabf180a2f69d30e884

    • SHA256

      0f09f8f60741e8b3c28dc927ff1b3318d8faa623d641704b605bc38142f54f28

    • SHA512

      e701babafad09f1115511949f3061275bc6fbc54756d40f038aa9be708ff06736413367395bff7e157035aa9260ada439ad9a8d4c2c48c14de94c42f6ec0c2bc

    • SSDEEP

      3072:Oq+kTdFfyZfJ+xjLkTVXbpL9FCOjrAJDH+9s9uAFfvUC:OkTdZy18JLgXbp9F5bo

    • Glupteba

      Glupteba is a modular loader written in Golang with various components.

    • Glupteba payload

    • PrivateLoader

      PrivateLoader.

    • UAC bypass

    • Windows security bypass

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

    • Downloads MZ/PE file

    • Modifies Windows Firewall

    • Checks BIOS information in registry

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of web browsers

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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • UPX packed file

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

    • Windows security modification

    • Adds Run key to start application

    • 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

    • Manipulates WinMonFS driver.

      Roottkits write to WinMonFS to hide directories/files from being detected.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks