Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/10/2024, 10:32

General

  • Target
    cd278921d2633b1147bca213bc3f2e62fcc8a9ff0eee1d4d80ae93730efe7376N.exe
  • Size 208KB
  • Sample241029-mk8xtavrhq
  • SHA256 cd278921d2633b1147bca213bc3f2e62fcc8a9ff0eee1d4d80ae93730efe7376
  • 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\cd278921d2633b1147bca213bc3f2e62fcc8a9ff0eee1d4d80ae93730efe7376N.exe
    "C:\Users\Admin\AppData\Local\Temp\cd278921d2633b1147bca213bc3f2e62fcc8a9ff0eee1d4d80ae93730efe7376N.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:4628
    • 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:2692

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        A609.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\A609.tmp
        • Size 24KB
        • SHA256 65c29a06be10a0ce74837b34b84eac3e6fdae56af366582fd7f501d1a7327d8e
        • MD5 SHA1 SHA512 SSDEEP

        CBFF.tmp

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

        E0E9.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\E0E9.tmp
        • Size 62KB
        • SHA256 8bed0e1490c11b7416afe51bda1432f63199fe8db2f93bad676a4ab73c6fa496
        • MD5 SHA1 SHA512 SSDEEP

        E17A.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\E17A.tmp
        • Size 42KB
        • SHA256 10613d03915cb41a38e7d42e955759fc99f4b6b8a07901be4aa8bdf4664a4e58
        • MD5 SHA1 SHA512 SSDEEP

        svchost.exe

        • Path C:\Windows\apppatch\svchost.exe
        • Size 208KB
        • SHA256 c97432498ad731746f744317df6897403d434ab963b9e96d0c7e02b7ac52ce10
        • MD5 SHA1 SHA512 SSDEEP

        memory/2692-55-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-51-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-13-0x0000000000400000-0x00000000004C7000-memory.dmp

        memory/2692-19-0x0000000000400000-0x00000000004C7000-memory.dmp

        memory/2692-20-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-24-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-22-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-26-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-79-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-78-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-77-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-76-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-74-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-73-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-72-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-71-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-70-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-69-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-68-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-67-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-66-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-65-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-64-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-63-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-62-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-61-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-60-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-59-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-58-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-57-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-16-0x0000000000400000-0x00000000004C7000-memory.dmp

        memory/2692-54-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-53-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-48-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-17-0x0000000000400000-0x00000000004C7000-memory.dmp

        memory/2692-49-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-50-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-47-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-46-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-45-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-44-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-42-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-40-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-41-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-39-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-37-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-36-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-35-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-34-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-33-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-32-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-31-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-28-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-29-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-27-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-25-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-75-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-56-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-52-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-43-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-38-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-30-0x0000000002BF0000-0x0000000002CA6000-memory.dmp

        memory/2692-18-0x0000000002A00000-0x0000000002AA8000-memory.dmp

        memory/4628-0-0x0000000000400000-0x00000000004C7000-memory.dmp

        memory/4628-2-0x0000000000400000-0x000000000045F000-memory.dmp

        memory/4628-1-0x0000000000670000-0x00000000006C1000-memory.dmp

        memory/4628-12-0x0000000000400000-0x00000000004C7000-memory.dmp

        memory/4628-15-0x0000000000400000-0x000000000045F000-memory.dmp

        memory/4628-14-0x0000000000670000-0x00000000006C1000-memory.dmp