Analysis

  • max time kernel
    142s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240319-en
  • resource tags

    arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system
  • submitted
    01/04/2024, 11:20

General

  • Target
    Hitomi Downloader.exe
  • Size 9.7MB
  • Sample240401-nfenvada2t
  • SHA256 2b5bf75c0aede1169e7aa2b4c760b1852f34990d5b8ce27ca2fa21efa35e0635
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • RisePro

    RisePro stealer is an infostealer distributed by PrivateLoader.

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Hitomi Downloader.exe
    "C:\Users\Admin\AppData\Local\Temp\Hitomi Downloader.exe"
    1⤵
    • Loads dropped DLL
    • Accesses Microsoft Outlook profiles
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: RenamesItself
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    • outlook_win_path
    PID:2524
    • C:\Users\Admin\AppData\Local\Temp\Update.exe
      "C:\Users\Admin\AppData\Local\Temp\Update.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      PID:2580

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        Update.exe

        • Path \Users\Admin\AppData\Local\Temp\Update.exe
        • Size 6.4MB
        • SHA256 9b08bf9b0ee4f62f21592107a5fc5e4cc9080aa4b0f1e049cf45ba0ee2296eb7
        • MD5 SHA1 SHA512 SSDEEP

        memory/2524-0-0x0000000074D80000-0x000000007532B000-memory.dmp

        memory/2524-1-0x0000000074D80000-0x000000007532B000-memory.dmp

        memory/2524-2-0x0000000000BF0000-0x0000000000C30000-memory.dmp

        memory/2524-3-0x0000000000BF0000-0x0000000000C30000-memory.dmp

        memory/2524-4-0x0000000074D80000-0x000000007532B000-memory.dmp

        memory/2524-5-0x0000000000BF0000-0x0000000000C30000-memory.dmp

        memory/2524-57-0x0000000000BF0000-0x0000000000C30000-memory.dmp

        memory/2524-55-0x0000000000BF0000-0x0000000000C30000-memory.dmp

        memory/2580-24-0x0000000000DB0000-0x0000000000DB1000-memory.dmp

        memory/2580-39-0x0000000000DE0000-0x0000000000DE1000-memory.dmp

        memory/2580-16-0x0000000000250000-0x0000000000251000-memory.dmp

        memory/2580-20-0x0000000000DB0000-0x0000000000DB1000-memory.dmp

        memory/2580-22-0x0000000000DB0000-0x0000000000DB1000-memory.dmp

        memory/2580-18-0x0000000000260000-0x0000000000DA2000-memory.dmp

        memory/2580-27-0x0000000000DC0000-0x0000000000DC1000-memory.dmp

        memory/2580-29-0x0000000000DC0000-0x0000000000DC1000-memory.dmp

        memory/2580-32-0x0000000000DD0000-0x0000000000DD1000-memory.dmp

        memory/2580-34-0x0000000000DD0000-0x0000000000DD1000-memory.dmp

        memory/2580-37-0x0000000000DE0000-0x0000000000DE1000-memory.dmp

        memory/2580-19-0x0000000000250000-0x0000000000251000-memory.dmp

        memory/2580-42-0x0000000000DF0000-0x0000000000DF1000-memory.dmp

        memory/2580-44-0x0000000000DF0000-0x0000000000DF1000-memory.dmp

        memory/2580-45-0x0000000000E80000-0x0000000000E81000-memory.dmp

        memory/2580-47-0x0000000000E80000-0x0000000000E81000-memory.dmp

        memory/2580-49-0x0000000000E80000-0x0000000000E81000-memory.dmp

        memory/2580-51-0x0000000077C20000-0x0000000077C21000-memory.dmp

        memory/2580-54-0x0000000000260000-0x0000000000DA2000-memory.dmp

        memory/2580-15-0x0000000000260000-0x0000000000DA2000-memory.dmp

        memory/2580-13-0x0000000000250000-0x0000000000251000-memory.dmp