Analysis

  • max time kernel
    111s
  • max time network
    120s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/02/2025, 10:26

General

  • Target
    83b9c68eef5d448a31a604b2f82e7f066991c30a75c24ae96364aa985299bb48N.exe
  • Size 218KB
  • Sample250205-mgpd1asmat
  • SHA256 83b9c68eef5d448a31a604b2f82e7f066991c30a75c24ae96364aa985299bb48
  • 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\83b9c68eef5d448a31a604b2f82e7f066991c30a75c24ae96364aa985299bb48N.exe
    "C:\Users\Admin\AppData\Local\Temp\83b9c68eef5d448a31a604b2f82e7f066991c30a75c24ae96364aa985299bb48N.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:5072
    • 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:2340

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        login[1].htm

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\WQOY74U4\login[1].htm
        • Size 162B
        • SHA256 9e17cb15dd75bbbd5dbb984eda674863c3b10ab72613cf8a39a00c3e11a8492a
        • MD5 SHA1 SHA512

        A372.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\A372.tmp
        • Size 593B
        • SHA256 b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f
        • MD5 SHA1 SHA512

        B569.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\B569.tmp
        • Size 61KB
        • SHA256 8da64497a402276f0d21cd71357067fb16a602b44ac22e3544be34ee905e1a09
        • MD5 SHA1 SHA512 SSDEEP

        B5BB.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\B5BB.tmp
        • Size 24KB
        • SHA256 2e8076ab5ac19a95fa275ec3f57b178a23bf1c5b2a0809a7e6a86cdd79542ec2
        • MD5 SHA1 SHA512 SSDEEP

        B967.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\B967.tmp
        • Size 42KB
        • SHA256 0079d32f59d2e545aa8d5bc8a8f377c3439a57fb7b4390cb3b8edada19747472
        • MD5 SHA1 SHA512 SSDEEP

        svchost.exe

        • Path C:\Windows\apppatch\svchost.exe
        • Size 218KB
        • SHA256 55ae65dbe55d90da029683a188000b374475d5985a94bfc7650e65c62141d769
        • MD5 SHA1 SHA512 SSDEEP

        memory/2340-55-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-51-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-19-0x0000000000400000-0x00000000006D0000-memory.dmp

        memory/2340-20-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-22-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-24-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-30-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-36-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-79-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-78-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-77-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-76-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-75-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-73-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-72-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-71-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-70-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-69-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-68-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-67-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-66-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-65-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-64-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-63-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-61-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-60-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-59-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-58-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-57-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-56-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-15-0x0000000000400000-0x00000000006D0000-memory.dmp

        memory/2340-54-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-52-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-48-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-16-0x0000000000400000-0x00000000006D0000-memory.dmp

        memory/2340-49-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-50-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-46-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-45-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-44-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-43-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-42-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-40-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-39-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-38-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-37-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-35-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-34-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-33-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-32-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-31-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-28-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-29-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-27-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-26-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-74-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-62-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-53-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-47-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-41-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-25-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

        memory/2340-17-0x0000000000400000-0x00000000006D0000-memory.dmp

        memory/2340-18-0x0000000002C00000-0x0000000002CA8000-memory.dmp

        memory/5072-0-0x0000000000400000-0x00000000006D0000-memory.dmp

        memory/5072-2-0x0000000000400000-0x000000000045F000-memory.dmp

        memory/5072-1-0x0000000000840000-0x0000000000891000-memory.dmp

        memory/5072-13-0x0000000000840000-0x0000000000891000-memory.dmp

        memory/5072-14-0x0000000000400000-0x000000000045F000-memory.dmp

        memory/5072-12-0x0000000000400000-0x00000000006D0000-memory.dmp