Analysis

  • max time kernel
    115s
  • 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
    06/11/2024, 04:25

General

  • Target
    ff03b0e46c9b1672bc761f8f761d0f74e678a9b60eb2bae762213a33aa1e58fbN.exe
  • Size 208KB
  • Sample241106-e15w4atnfs
  • SHA256 ff03b0e46c9b1672bc761f8f761d0f74e678a9b60eb2bae762213a33aa1e58fb
  • 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\ff03b0e46c9b1672bc761f8f761d0f74e678a9b60eb2bae762213a33aa1e58fbN.exe
    "C:\Users\Admin\AppData\Local\Temp\ff03b0e46c9b1672bc761f8f761d0f74e678a9b60eb2bae762213a33aa1e58fbN.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:2780
    • 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:3116

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        A50E.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\A50E.tmp
        • Size 57KB
        • SHA256 b22328de35be299bcc03958964ae23c8236c2af89cba9f4c80e695c1f02bd89a
        • MD5 SHA1 SHA512 SSDEEP

        A5EF.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\A5EF.tmp
        • Size 42KB
        • SHA256 26646e99f8342e37f740f546ad280d9d01cb1fb29c8cb78c3e849375b979238f
        • MD5 SHA1 SHA512 SSDEEP

        A5FF.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\A5FF.tmp
        • Size 481B
        • SHA256 eb31ce53a476aabc67154961558119f0d5d5fa1de0bdfb754d46cc62765a5a31
        • MD5 SHA1 SHA512

        svchost.exe

        • Path C:\Windows\apppatch\svchost.exe
        • Size 208KB
        • SHA256 c31321aa3c93ae424493b8728a8989765c44646fd1b5724ae7b6129a509b9b7a
        • MD5 SHA1 SHA512 SSDEEP

        memory/2780-0-0x00007FFA06690000-0x00007FFA06885000-memory.dmp

        memory/2780-10-0x0000000000400000-0x0000000000467000-memory.dmp

        memory/3116-11-0x00007FFA06690000-0x00007FFA06885000-memory.dmp

        memory/3116-12-0x0000000002A00000-0x0000000002AA8000-memory.dmp

        memory/3116-13-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-17-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-15-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-18-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-26-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-74-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-72-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-70-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-71-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-69-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-68-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-67-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-66-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-65-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-64-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-63-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-62-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-61-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-60-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-59-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-58-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-57-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-56-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-55-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-54-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-53-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-52-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-51-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-50-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-49-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-48-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-47-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-45-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-44-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-43-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-42-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-41-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-40-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-39-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-38-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-35-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-36-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-34-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-33-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-32-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-31-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-30-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-29-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-28-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-27-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-25-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-24-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-23-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-22-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-21-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-20-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-19-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-73-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-46-0x0000000002BB0000-0x0000000002C66000-memory.dmp

        memory/3116-37-0x0000000002BB0000-0x0000000002C66000-memory.dmp