Resubmissions

21/01/2024, 14:53

240121-r9a5asead210

30/06/2023, 14:46

230630-r492faee4v10

Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230621-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/06/2023, 14:46

General

  • Target
    Trigona.exe
  • Size 1.1MB
  • Sample230630-r492faee4v
  • SHA256 b49bf3a4baf637e067a8db7360051eba39713b7958519b49f8e236b6014c8477
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detects Trigona ransomware 13 IoCs
  • Trigona

    A ransomware first seen at the beginning of the 2022.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Creates a large amount of network flows 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Drops desktop.ini file(s) 4 IoCs
  • Drops file in Program Files directory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Trigona.exe
    "C:\Users\Admin\AppData\Local\Temp\Trigona.exe"
    1⤵
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    PID:1436

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        desktop.ini

        • Path C:\$Recycle.Bin\S-1-5-21-4129409437-3162877118-52503038-1000\desktop.ini
        • Size 2KB
        • SHA256 1c1663faed9b8ad4b412aa945ce3747c50f5e6de42b5166108ef21c06eebd260
        • MD5 SHA1 SHA512

        how_to_decrypt.hta

        • Path C:\how_to_decrypt.hta
        • Size 11KB
        • SHA256 ff0e1e4120a114018ff457d63d23668d73b01f138c8c43cb097dcc945349d02c
        • MD5 SHA1 SHA512 SSDEEP

        memory/1436-138-0x0000000000400000-0x0000000000526000-memory.dmp

        memory/1436-816-0x0000000000400000-0x0000000000526000-memory.dmp

        memory/1436-133-0x0000000000400000-0x0000000000526000-memory.dmp

        memory/1436-147-0x0000000000400000-0x0000000000526000-memory.dmp

        memory/1436-148-0x0000000000400000-0x0000000000526000-memory.dmp

        memory/1436-135-0x0000000000400000-0x0000000000526000-memory.dmp

        memory/1436-134-0x0000000000400000-0x0000000000526000-memory.dmp

        memory/1436-137-0x0000000000400000-0x0000000000526000-memory.dmp

        memory/1436-1931-0x0000000000400000-0x0000000000526000-memory.dmp

        memory/1436-6708-0x0000000000400000-0x0000000000526000-memory.dmp

        memory/1436-9725-0x0000000000400000-0x0000000000526000-memory.dmp

        memory/1436-11130-0x0000000000400000-0x0000000000526000-memory.dmp

        memory/1436-14297-0x0000000000400000-0x0000000000526000-memory.dmp

        memory/1436-16986-0x0000000000400000-0x0000000000526000-memory.dmp