Analysis

  • max time kernel
    103s
  • max time network
    118s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/11/2024, 22:30

General

  • Target
    35158e5d86fe9a546adcd2fa3b971312ddfc7253be0563120d3d342aa4d0ca68N.exe
  • Size 686KB
  • Sample241102-2ew4dszpgr
  • SHA256 35158e5d86fe9a546adcd2fa3b971312ddfc7253be0563120d3d342aa4d0ca68
  • 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\35158e5d86fe9a546adcd2fa3b971312ddfc7253be0563120d3d342aa4d0ca68N.exe
    "C:\Users\Admin\AppData\Local\Temp\35158e5d86fe9a546adcd2fa3b971312ddfc7253be0563120d3d342aa4d0ca68N.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:3120
    • 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:3568

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\GRYMSCZU\login[1].htm
        • Size 162B
        • SHA256 9e17cb15dd75bbbd5dbb984eda674863c3b10ab72613cf8a39a00c3e11a8492a
        • MD5 SHA1 SHA512

        38D2.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\38D2.tmp
        • Size 593B
        • SHA256 b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f
        • MD5 SHA1 SHA512

        7BEB.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\7BEB.tmp
        • Size 24KB
        • SHA256 a64932bbafc546101bd98ec87e4a9af0223f3860c7c216e86c952b066dd52842
        • MD5 SHA1 SHA512 SSDEEP

        7D1B.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\7D1B.tmp
        • Size 42KB
        • SHA256 d22603fdc00882dd655ab79e9baa782531944178a63dcb53ed6baeabbe0b6739
        • MD5 SHA1 SHA512 SSDEEP

        A0D2.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\A0D2.tmp
        • Size 57KB
        • SHA256 3674a9c30b5c3571a86c6c80bcc5f906d6270886f41fa5386807fd399a567c9d
        • MD5 SHA1 SHA512 SSDEEP

        svchost.exe

        • Path C:\Windows\apppatch\svchost.exe
        • Size 686KB
        • SHA256 f7fc78badc4b97f415b131adc632e53ba1845c3924c848bb857439bf7f9a4991
        • MD5 SHA1 SHA512 SSDEEP

        memory/3568-48-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-36-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-14-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-16-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-17-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-39-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-38-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-68-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-74-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-73-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-72-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-71-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-70-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-67-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-65-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-66-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-64-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-63-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-61-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-59-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-60-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-58-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-57-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-56-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-55-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-54-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-52-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-50-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-10-0x0000000002A00000-0x0000000002AA8000-memory.dmp

        memory/3568-47-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-13-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-46-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-32-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-43-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-42-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-41-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-45-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-35-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-34-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-31-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-29-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-25-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-24-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-23-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-22-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-21-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-62-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-53-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-51-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-49-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-40-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-37-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-18-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-33-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-44-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-30-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-28-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-27-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-26-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-20-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-19-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3568-306-0x0000000002BB0000-0x0000000002C66000-memory.dmp