Analysis

  • max time kernel
    138s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/11/2024, 05:26

General

  • Target
    fe358ca8ffa50a8cb2c70d1b7baa5e2235c56a8f9291a3d98d659e04fc53673a.exe
  • Size 686KB
  • Sample241124-f41bfsslfj
  • SHA256 fe358ca8ffa50a8cb2c70d1b7baa5e2235c56a8f9291a3d98d659e04fc53673a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • simda

Attributes
  • dga

    gatyfus.com

    lyvyxor.com

    vojyqem.com

    qetyfuv.com

    puvyxil.com

    gahyqah.com

    lyryfyd.com

    vocyzit.com

    qegyqaq.com

    purydyv.com

    gacyzuz.com

    lygymoj.com

    vowydef.com

    qexylup.com

    pufymoq.com

    gaqydeb.com

    lyxylux.com

    vofymik.com

    qeqysag.com

    puzylyp.com

    gadyniw.com

    lymysan.com

    volykyc.com

    qedynul.com

    pumypog.com

    galykes.com

    lysynur.com

    vonypom.com

    qekykev.com

    pupybul.com

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Simda family
  • simda

    Simda is an infostealer written in C++.

  • Executes dropped EXE 1 IoCs
  • Modifies WinLogon 2 TTPs 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fe358ca8ffa50a8cb2c70d1b7baa5e2235c56a8f9291a3d98d659e04fc53673a.exe
    "C:\Users\Admin\AppData\Local\Temp\fe358ca8ffa50a8cb2c70d1b7baa5e2235c56a8f9291a3d98d659e04fc53673a.exe"
    1⤵
    • Modifies WinLogon
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: RenamesItself
    • Suspicious use of WriteProcessMemory
    PID:4760
    • C:\Windows\apppatch\svchost.exe
      "C:\Windows\apppatch\svchost.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Executes dropped EXE
      • Modifies WinLogon
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:3336

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        login[1].htm

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\PGH3GSHW\login[1].htm
        • Size 162B
        • SHA256 9e17cb15dd75bbbd5dbb984eda674863c3b10ab72613cf8a39a00c3e11a8492a
        • MD5 SHA1 SHA512

        158A.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\158A.tmp
        • Size 593B
        • SHA256 b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f
        • MD5 SHA1 SHA512

        3879.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\3879.tmp
        • Size 61KB
        • SHA256 985f2addce4bb3a6353ac6d312094c6045bafdf5e60752da1a024317b07b2b19
        • MD5 SHA1 SHA512 SSDEEP

        391D.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\391D.tmp
        • Size 42KB
        • SHA256 83baebd4653959d0b04bcbd86512a6e63a6ddf43cd5e1bad7b8f214fa47ac7ce
        • MD5 SHA1 SHA512 SSDEEP

        391D.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\391D.tmp
        • Size 42KB
        • SHA256 fe0dacdf66481b81f1d1b6fa2fab9b539c659350ee7e6aa9c88940c6e0d30473
        • MD5 SHA1 SHA512 SSDEEP

        71A9.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\71A9.tmp
        • Size 1KB
        • SHA256 69b300ae0454ed943380d2f3a36c95f85235dc5ad1a68ded79d58b785ea0594b
        • MD5 SHA1 SHA512

        svchost.exe

        • Path C:\Windows\apppatch\svchost.exe
        • Size 686KB
        • SHA256 25d0686439d8cc2e9b132125e0e0c6cb18a8b65d363ace357ea78240d0395fbf
        • MD5 SHA1 SHA512 SSDEEP

        memory/3336-50-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-43-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-14-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-18-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-22-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-74-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-73-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-72-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-71-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-69-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-67-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-68-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-66-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-65-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-64-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-45-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-62-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-61-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-60-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-59-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-58-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-57-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-56-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-53-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-54-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-52-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-51-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-13-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-49-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-48-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-16-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-47-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-63-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-44-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-46-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-42-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-41-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-40-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-39-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-37-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-36-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-34-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-33-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-32-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-31-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-30-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-29-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-28-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-27-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-26-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-25-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-24-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-21-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-20-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-19-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-70-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-55-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-38-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-10-0x0000000002A00000-0x0000000002AA8000-memory.dmp

        memory/3336-35-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-23-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-17-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3336-176-0x0000000002BB0000-0x0000000002C66000-memory.dmp