Analysis

  • max time kernel
    141s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/03/2025, 08:48

General

  • Target
    c49eb21ed61c75a7174227879e2059dbbd273070caecad6267a6b64011706bb2.exe
  • Size 213KB
  • Sample250315-kqhayaspx4
  • SHA256 c49eb21ed61c75a7174227879e2059dbbd273070caecad6267a6b64011706bb2
  • 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\c49eb21ed61c75a7174227879e2059dbbd273070caecad6267a6b64011706bb2.exe
    "C:\Users\Admin\AppData\Local\Temp\c49eb21ed61c75a7174227879e2059dbbd273070caecad6267a6b64011706bb2.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:4352
    • 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:2400

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7759.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\7759.tmp
        • Size 28KB
        • SHA256 b7967c532f5c0d6b05f9e9f5a22b9e93983342f095fadd77da17c254741eeae2
        • MD5 SHA1 SHA512 SSDEEP

        svchost.exe

        • Path C:\Windows\apppatch\svchost.exe
        • Size 213KB
        • SHA256 dc605f184b8a3fe44267bc8bc4503cebb979cc03c199d7f73c2107f2efc375b1
        • MD5 SHA1 SHA512 SSDEEP

        memory/2400-58-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-55-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-18-0x0000000002D50000-0x0000000002DF8000-memory.dmp

        memory/2400-15-0x0000000000400000-0x000000000064B000-memory.dmp

        memory/2400-34-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-50-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-19-0x0000000000400000-0x000000000064B000-memory.dmp

        memory/2400-20-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-24-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-22-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-25-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-42-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-79-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-78-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-77-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-76-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-75-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-74-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-73-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-72-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-71-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-70-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-69-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-68-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-66-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-65-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-64-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-63-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-62-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-61-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-60-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-59-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-16-0x0000000000400000-0x000000000064B000-memory.dmp

        memory/2400-54-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-17-0x0000000000400000-0x000000000064B000-memory.dmp

        memory/2400-56-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-57-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-53-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-52-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-51-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-48-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-49-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-47-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-46-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-45-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-44-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-43-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-41-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-40-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-39-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-38-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-37-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-36-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-35-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-33-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-32-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-31-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-30-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-29-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-67-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-28-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-27-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/2400-26-0x0000000003140000-0x00000000031F6000-memory.dmp

        memory/4352-2-0x0000000000400000-0x000000000045F000-memory.dmp

        memory/4352-1-0x0000000002770000-0x00000000027C1000-memory.dmp

        memory/4352-0-0x0000000000400000-0x000000000064B000-memory.dmp

        memory/4352-12-0x0000000000400000-0x000000000064B000-memory.dmp

        memory/4352-14-0x0000000000400000-0x000000000045F000-memory.dmp

        memory/4352-13-0x0000000002770000-0x00000000027C1000-memory.dmp