Analysis

  • max time kernel
    149s
  • 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
    20/11/2024, 04:16

General

  • Target
    d231a385059afa6806713b75e56492a4f2c93bf9fc7c8ac67fad4d7304311de1.exe
  • Size 218KB
  • Sample241120-ev5ddazrfs
  • SHA256 d231a385059afa6806713b75e56492a4f2c93bf9fc7c8ac67fad4d7304311de1
  • 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\d231a385059afa6806713b75e56492a4f2c93bf9fc7c8ac67fad4d7304311de1.exe
    "C:\Users\Admin\AppData\Local\Temp\d231a385059afa6806713b75e56492a4f2c93bf9fc7c8ac67fad4d7304311de1.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:4368
    • 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:1996

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        8ACB.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\8ACB.tmp
        • Size 24KB
        • SHA256 f279b35e48cdeb2392696d58355731d50e42db100009e65a8d46ba917bed0b50
        • MD5 SHA1 SHA512 SSDEEP

        C4D8.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\C4D8.tmp
        • Size 1KB
        • SHA256 2e7dda9a860428c02e36d8953308c6dc34259519b2b6ea1ae64e145bb38a64d0
        • MD5 SHA1 SHA512

        DC79.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\DC79.tmp
        • Size 593B
        • SHA256 b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f
        • MD5 SHA1 SHA512

        EDE4.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\EDE4.tmp
        • Size 61KB
        • SHA256 bc230b7f4d5b50530a3adbbc05d16f9b8dc5db608abba8399a369a30bf24f522
        • MD5 SHA1 SHA512 SSDEEP

        EE68.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\EE68.tmp
        • Size 41KB
        • SHA256 c919bcadf9e5193ba63d1f40954c3944d99dc845f1e2a5ca8ad0a77751d61b2b
        • MD5 SHA1 SHA512 SSDEEP

        EE68.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\EE68.tmp
        • Size 41KB
        • SHA256 a6f0f4fc0b2ed62da23ad29a546253124342b4669b215fd33469638e2d1f852f
        • MD5 SHA1 SHA512 SSDEEP

        svchost.exe

        • Path C:\Windows\apppatch\svchost.exe
        • Size 218KB
        • SHA256 bbdb01339dd69a47d670c75ccb635c865561e2df4d591a7ecdd694a2a0569888
        • MD5 SHA1 SHA512 SSDEEP

        memory/1996-56-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-53-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-19-0x0000000000400000-0x00000000006D0000-memory.dmp

        memory/1996-22-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-24-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-20-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-25-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-26-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-69-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-79-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-78-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-77-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-76-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-75-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-74-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-73-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-72-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-71-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-70-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-68-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-67-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-66-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-64-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-63-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-65-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-62-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-61-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-60-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-59-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-58-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-57-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-12-0x0000000000400000-0x00000000006D0000-memory.dmp

        memory/1996-55-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-49-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-16-0x0000000000400000-0x00000000006D0000-memory.dmp

        memory/1996-50-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-52-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-48-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-47-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-46-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-45-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-44-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-43-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-42-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-40-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-39-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-38-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-37-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-36-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-35-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-34-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-32-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-31-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-30-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-29-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-28-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-27-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-54-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-51-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-41-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-33-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/1996-17-0x0000000000400000-0x00000000006D0000-memory.dmp

        memory/1996-18-0x0000000002C00000-0x0000000002CA8000-memory.dmp

        memory/4368-0-0x0000000000400000-0x00000000006D0000-memory.dmp

        memory/4368-1-0x0000000002420000-0x0000000002471000-memory.dmp

        memory/4368-15-0x0000000000400000-0x000000000045F000-memory.dmp

        memory/4368-2-0x0000000000400000-0x000000000045F000-memory.dmp

        memory/4368-14-0x0000000002420000-0x0000000002471000-memory.dmp

        memory/4368-13-0x0000000000400000-0x00000000006D0000-memory.dmp