General

  • Target

    https://cdn.discordapp.com/attachments/1292992589783634017/1294525828595449856/Serotonin.dll?ex=670bfd60&is=670aabe0&hm=f261ff7746fa8ee9f947c45bcef95becf98f85663a4d9a08b0bc3fa35b69a6f9&

  • Sample

    241013-epynmsycnh

Malware Config

Targets

    • Target

      https://cdn.discordapp.com/attachments/1292992589783634017/1294525828595449856/Serotonin.dll?ex=670bfd60&is=670aabe0&hm=f261ff7746fa8ee9f947c45bcef95becf98f85663a4d9a08b0bc3fa35b69a6f9&

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • 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.

    • Detected potential entity reuse from brand STEAM.

MITRE ATT&CK Enterprise v15

Tasks