Analysis

  • max time kernel
    111s
  • max time network
    116s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/11/2024, 15:59

General

  • Target
    4f972bde5014947126779960e57fa00de7dcff185f93c472badbc3524d384187N.exe
  • Size 218KB
  • Sample241106-te84ystanf
  • SHA256 4f972bde5014947126779960e57fa00de7dcff185f93c472badbc3524d384187
  • 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\4f972bde5014947126779960e57fa00de7dcff185f93c472badbc3524d384187N.exe
    "C:\Users\Admin\AppData\Local\Temp\4f972bde5014947126779960e57fa00de7dcff185f93c472badbc3524d384187N.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:3568
    • 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:3144

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        login[2].htm

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\JAZ6MGFU\login[2].htm
        • Size 168B
        • SHA256 43edf068d34276e8ade4113d4d7207de19fc98a2ae1c07298e593edae2a8774c
        • MD5 SHA1 SHA512

        7CA6.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\7CA6.tmp
        • Size 24KB
        • SHA256 1b161224d0d20a2022b8c735b025f3873c24b632f5646e8ad63e0fd357c2d692
        • MD5 SHA1 SHA512 SSDEEP

        7CE7.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\7CE7.tmp
        • Size 42KB
        • SHA256 3d844504932c232b07f421a35ca9cc950c2a2154def51b9a082263ff5f8941c8
        • MD5 SHA1 SHA512 SSDEEP

        7CF8.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\7CF8.tmp
        • Size 481B
        • SHA256 5791afbf8e5f975518e00e20f5f227bca9182668d86d14380d0cd2c87c6fa157
        • MD5 SHA1 SHA512

        7D69.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\7D69.tmp
        • Size 57KB
        • SHA256 226b56f529aacb1162079bd62842d2f01e80403dc8d075268e4a1895444b9588
        • MD5 SHA1 SHA512 SSDEEP

        884F.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\884F.tmp
        • Size 593B
        • SHA256 b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f
        • MD5 SHA1 SHA512

        svchost.exe

        • Path C:\Windows\apppatch\svchost.exe
        • Size 218KB
        • SHA256 62058d6fd8af15021359b9e49a78351a2e56fcfa3fc4fb94a1a82f16a763d562
        • MD5 SHA1 SHA512 SSDEEP

        memory/3144-56-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-54-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-19-0x0000000000400000-0x00000000006D0000-memory.dmp

        memory/3144-20-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-24-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-22-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-33-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-34-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-79-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-78-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-77-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-75-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-74-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-73-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-72-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-71-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-14-0x0000000000400000-0x00000000006D0000-memory.dmp

        memory/3144-70-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-69-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-68-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-67-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-16-0x0000000000400000-0x00000000006D0000-memory.dmp

        memory/3144-66-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-65-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-64-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-63-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-62-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-60-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-59-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-58-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-57-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-17-0x0000000000400000-0x00000000006D0000-memory.dmp

        memory/3144-55-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-51-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-18-0x0000000002C00000-0x0000000002CA8000-memory.dmp

        memory/3144-52-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-53-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-50-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-49-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-48-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-47-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-46-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-45-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-42-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-43-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-41-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-40-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-38-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-37-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-36-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-35-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-32-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-31-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-30-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-29-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-28-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-27-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-26-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-76-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-61-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-44-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-39-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3144-25-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/3568-11-0x0000000000400000-0x00000000006D0000-memory.dmp

        memory/3568-0-0x0000000000400000-0x00000000006D0000-memory.dmp

        memory/3568-1-0x00000000008A0000-0x00000000008F1000-memory.dmp

        memory/3568-2-0x0000000000400000-0x000000000045F000-memory.dmp

        memory/3568-15-0x0000000000400000-0x000000000045F000-memory.dmp

        memory/3568-13-0x00000000008A0000-0x00000000008F1000-memory.dmp