Analysis

  • max time kernel
    142s
  • max time network
    146s
  • 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, 21:32

General

  • Target
    397527e1590046b533dd6a1080c01d273b5dc6393cec20df1b3d6da2ad8c1340.exe
  • Size 208KB
  • Sample241102-1d16aaypdl
  • SHA256 397527e1590046b533dd6a1080c01d273b5dc6393cec20df1b3d6da2ad8c1340
  • 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\397527e1590046b533dd6a1080c01d273b5dc6393cec20df1b3d6da2ad8c1340.exe
    "C:\Users\Admin\AppData\Local\Temp\397527e1590046b533dd6a1080c01d273b5dc6393cec20df1b3d6da2ad8c1340.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:4740
    • 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:4980

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        23E3.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\23E3.tmp
        • Size 593B
        • SHA256 7392749832c70fcfc2d440d7afc2f880000dd564930d95d634eb1199fa15de30
        • MD5 SHA1 SHA512

        23E3.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\23E3.tmp
        • Size 593B
        • SHA256 b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f
        • MD5 SHA1 SHA512

        4EBF.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\4EBF.tmp
        • Size 24KB
        • SHA256 784eec97a82ad64acedd1b2c216badba647a8216ad4fafa9b255b827b4d719ac
        • MD5 SHA1 SHA512 SSDEEP

        4F55.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\4F55.tmp
        • Size 57KB
        • SHA256 43928f8f7296f061c26835a1924a0160077c230ff5fab35a157cbdfa8b4057ba
        • MD5 SHA1 SHA512 SSDEEP

        5300.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\5300.tmp
        • Size 42KB
        • SHA256 d228677eaab7c7a77c31832ed784a99058c1bb057e475d29e9d485fa6fa69e1b
        • MD5 SHA1 SHA512 SSDEEP

        5300.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\5300.tmp
        • Size 42KB
        • SHA256 7b40d139de0c89ed4b03ce743778d1cc2cc03ad27877e4c635c3c0affde645e0
        • MD5 SHA1 SHA512 SSDEEP

        svchost.exe

        • Path C:\Windows\apppatch\svchost.exe
        • Size 208KB
        • SHA256 45bce8a2d7e7d5cf7f2f7007bb2d4ab525458c954a15c674cb931c8b6f374e48
        • MD5 SHA1 SHA512 SSDEEP

        memory/4740-0-0x0000000000570000-0x0000000000573000-memory.dmp

        memory/4740-1-0x0000000000400000-0x000000000045F000-memory.dmp

        memory/4740-10-0x0000000000400000-0x0000000000467000-memory.dmp

        memory/4740-13-0x0000000000400000-0x000000000045F000-memory.dmp

        memory/4740-12-0x0000000000570000-0x0000000000573000-memory.dmp

        memory/4980-58-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-52-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-22-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-20-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-69-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-79-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-35-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-78-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-77-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-76-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-75-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-74-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-73-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-72-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-71-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-70-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-68-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-67-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-66-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-65-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-64-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-63-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-62-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-61-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-60-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-59-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-17-0x0000000000400000-0x0000000000467000-memory.dmp

        memory/4980-57-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-56-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-54-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-53-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-18-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-51-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-50-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-47-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-48-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-46-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-45-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-44-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-43-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-42-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-41-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-40-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-39-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-38-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-37-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-36-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-34-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-32-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-31-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-30-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-29-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-28-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-26-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-24-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-25-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-23-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-55-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-16-0x0000000002A00000-0x0000000002AA8000-memory.dmp

        memory/4980-15-0x0000000000400000-0x0000000000467000-memory.dmp

        memory/4980-14-0x0000000000400000-0x0000000000467000-memory.dmp

        memory/4980-49-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-33-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/4980-27-0x0000000002BB0000-0x0000000002C66000-memory.dmp