General

  • Target
    https://gettingtohappy.sg/gta-v-download-for-pc-highly-compressed-free/
  • Sample260808-tz73ds1anb

Malware Config

Extracted

Path
  • C:\Users\Admin\Downloads\config.txt

Ransom Note
  • { "config_id": "", "public_key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAugqZ4ATE9+9FqununW/DBvGosnUX/bNxQzMYUmE14GJIbNa6vwYSNXOlG09mvdAqZqD3lXihWDjy25+gzqSeS+Fs2qNyTdfGPA8iu2xx5RRUXKLGFThxtIzg3fohAK3+LxJVhxtuITAT38IHacc7dVLHsrddu4UDjiHGFdvXjB55Nwe5cu1BYylHsARMYycBA2FwLP57cKvc2/C3OXBAF6qbsVXBcyFhrKOOYA/+5IjFfEhgHy2FLHRf8lmPQPbSlrM6dk+W4D5KVqOPx/eFp0geUJJlmlre3flI29qWS20bkGqAEz9j07y69HGYN9Nt7+DRgBwrpNo/EkZkuaSTtQIDAQAB", "extension": "bleepin", "note_file_name": "RECOVER-${EXTENSION}-FILES.txt", "note_full_text": ">> Introduction\n\nImportant files on your system was ENCRYPTED and now they have have \"${EXTENSION}\" extension.\nIn order to recover your files you need to follow instructions below.\n\n>> Sensitive Data\n\nSensitive data on your system was DOWNLOADED and it will be PUBLISHED if you refuse to cooperate.\n\nData includes:\n- Employees personal data, CVs, DL, SSN.\n- Complete network map including credentials for local and remote services.\n- Financial information including clients data, bills, budgets, annual reports, bank statements.\n- - And more...\n\n>> CAUTION\n\nDO NOT MODIFY FILES YOURSELF.\nDO NOT USE THIRD PARTY SOFTWARE TO RESTORE YOUR DATA.\nYOU MAY DAMAGE YOUR FILES, IT WILL RESULT IN PERMANENT DATA LOSS.\nYOUR DATA IS STRONGLY ENCRYPTED, YOU CAN NOT DECRYPT IT WITHOUT CIPHER KEY.\n\n>> Recovery procedure\n\nFollow these simple steps to get in touch and recover your data:\n1) Download and install Tor Browser from: https://torproject.org/\n2) Navigate to: http://xxx.onion/?access-key=${ACCESS_KEY}", "note_short_text": "Important files on your system was ENCRYPTED.\nSensitive data on your system was DOWNLOADED.\nTo recover your files and prevent publishing of sensitive information follow instructions in \"${NOTE_FILE_NAME}\" file.", "default_file_mode": { "SmartPattern": [ 10485760, 10 ] }, "default_file_cipher": "Best", "credentials": [ [ "", "" ], [ "", "" ], [ "", "" ], [ "", "" ] ], "kill_services": [ "mepocs", "memtas", "veeam", "svc$", "backup", "sql", "vss", "msexchange" ], "kill_processes": [ "encsvc", "thebat", "mydesktopqos", "xfssvccon", "firefox", "infopath", "winword", "steam", "synctime", "notepad", "ocomm", "onenote", "mspub", "thunderbird", "agntsvc", "sql", "excel", "powerpnt", "outlook", "wordpad", "dbeng50", "isqlplussvc", "sqbcoreservice", "oracle", "ocautoupds", "dbsnmp", "msaccess", "tbirdconfig", "ocssd", "mydesktopservice", "visio" ], "exclude_directory_names": [ "system volume information", "intel", "$windows.~ws", "application data", "$recycle.bin", "mozilla", "program files (x86)", "program files", "$windows.~bt", "public", "msocache", "windows", "default", "all users", "tor browser", "programdata", "boot", "config.msi", "google", "perflogs", "appdata", "windows.old" ], "exclude_file_names": [ "desktop.ini", "autorun.inf", "ntldr", "bootsect.bak", "thumbs.db", "boot.ini", "ntuser.dat", "iconcache.db", "bootfont.bin", "ntuser.ini", "ntuser.dat.log" ], "exclude_file_extensions": [ "themepack", "nls", "diagpkg", "msi", "lnk", "exe", "cab", "scr", "bat", "drv", "rtp", "msp", "prf", "msc", "ico", "key", "ocx", "diagcab", "diagcfg", "pdb", "wpx", "hlp", "icns", "rom", "dll", "msstyles", "mod", "ps1", "ics", "hta", "bin", "cmd", "ani", "386", "lock", "cur", "idx", "sys", "com", "deskthemepack", "shs", "ldf", "theme", "mpa", "nomedia", "spl", "cpl", "adv", "icl", "msu" ], "exclude_file_path_wildcard": [], "enable_network_discovery": true, "enable_self_propagation": true, "enable_set_wallpaper": true, "enable_esxi_vm_kill": true, "enable_esxi_vm_snapshot_kill": false, "strict_include_paths": [] }
URLs
  • http://xxx.onion/?access-key=${ACCESS_KEY}"

Targets

    • Target
      https://gettingtohappy.sg/gta-v-download-for-pc-highly-compressed-free/
    • Family: BlackCat

      A Rust-based ransomware sold as RaaS first seen in late 2021.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • 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.

    • 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.

    • Contacts third-party web service commonly abused for C2

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

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Indicator Removal: File Deletion

      Adversaries may delete files left behind by the actions of their intrusion activity.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v16

Tasks