Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    23/04/2026, 02:04

General

  • Target
    Nocturno_2.4.0_x64-setup.exe
  • Size 26.3MB
  • Sample260423-chpfaags4t
  • SHA256 f8a8e4529497331fa0eb09c7d9f8143273d592725e9793ada050058739835ff7
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 6 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 11 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Nocturno_2.4.0_x64-setup.exe
    "C:\Users\Admin\AppData\Local\Temp\Nocturno_2.4.0_x64-setup.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    PID:1432

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsi3FA6.tmp\System.dll
        • Size 12KB
        • SHA256 8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8
        • MD5 SHA1 SHA512 SSDEEP TLSH

        modern-wizard.bmp

        • Path C:\Users\Admin\AppData\Local\Temp\nsi3FA6.tmp\modern-wizard.bmp
        • Size 150KB
        • SHA256 d013b63eee9704679b4c3bc1798bed21a2dabecde6cdb977a7ce46f424de6522
        • MD5 SHA1 SHA512 SSDEEP TLSH

        nsDialogs.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsi3FA6.tmp\nsDialogs.dll
        • Size 9KB
        • SHA256 56b96add1978b1abba286f7f8982b0efbe007d4a48b3ded6a4d408e01d753fe2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        nsis_tauri_utils.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsi3FA6.tmp\nsis_tauri_utils.dll
        • Size 33KB
        • SHA256 3697d11bdbe1e34daa26b1e89d84276d9ff28148906943d0fe888354c3b13620
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1432-12-0x00000000022F0000-0x00000000023B1000-memory.dmp