Alina (malware)

Alina is a Point of Sale Malware or POS RAM Scraper that is used by cybercriminals to scrape credit card and debit card information from the point of sale system.[1] It first started to scrape information in late 2012. It resembles JackPOS Malware.[2][3]

Process of Alina POS RAM Scraper

Once executed, it gets installed on the user's computer and checks for updates. If an update is found, it removes the existing Alina code and installs the latest version. Then, for new installations, it adds the file path to an AutoStart runkey to maintain persistence. Finally, it adds java.exe to the %APPDATA% directory and executes it using the parameter alina=<path_to_executable> for new installations or, update=<orig_exe>;<new_exe> for upgrades.[4][5][6]

Alina inspects the user's processes with the help of Windows API calls:

  • CreateToolhelp32Snapshot() takes a snapshot of all running processes
  • Process32First()/Process32Next() retrieve the track 1 and track 2 information in the process memory

Alina maintains a blacklist of processes, if there is no process information in the blacklist it uses OpenProcess() to read and process the contents in the memory dump. Once the data is scraped Alina sends it to C&C servers using an HTTP POST command that is hardcoded in binary.[6]

gollark: They work surprisingly well, even though I don't understand any of it.
gollark: RPNCalc makes this easier with its better stack manipulation and closures.
gollark: For example, if I took C but made it so that all function names had to be declared backward.
gollark: Not really. You can make things worse with no improvement elsewhere.
gollark: There are. They just aren't very good.

See also

References
  1. Alina POS malware "sparks" off a new variant
  2. New Variant of Alina PoS Malware
  3. Alina POS Malware
  4. PoS RAM Scraper Malware: Past, Present, and Future
  5. PoS RAM Scraper Malware Mechanism
  6. Alina: Casting a Shadow on POS
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