General

  • Target
    97655f76dbd6e322aea5ecf9dcc82420ec25fb67c6fec0a6febbcd7e8b632e53
  • Size 851KB
  • Sample240423-m156vsff25
  • SHA256 97655f76dbd6e322aea5ecf9dcc82420ec25fb67c6fec0a6febbcd7e8b632e53
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Targets

    • Target
      97655f76dbd6e322aea5ecf9dcc82420ec25fb67c6fec0a6febbcd7e8b632e53
    • Size 851KB
    • SHA256 97655f76dbd6e322aea5ecf9dcc82420ec25fb67c6fec0a6febbcd7e8b632e53
    • MD5 SHA1 SHA512 SSDEEP
    • Glupteba

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

    • Glupteba payload

    • Modifies firewall policy service

    • Stealc

      Stealc is an infostealer written in C++.

    • UAC bypass

    • Windows security bypass

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

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Modifies Windows Firewall

    • 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.

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • 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

    • Drops Chrome extension

    • Drops desktop.ini file(s)

    • 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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • 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