Analysis

  • max time kernel
    114s
  • max time network
    119s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/01/2025, 16:03

General

  • Target
    45ba15303dd96b4524e85152812d5309ca8d8156333fe826033a9f84b6f699ec.exe
  • Size 218KB
  • Sample250121-thkkrsslar
  • SHA256 45ba15303dd96b4524e85152812d5309ca8d8156333fe826033a9f84b6f699ec
  • 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\45ba15303dd96b4524e85152812d5309ca8d8156333fe826033a9f84b6f699ec.exe
    "C:\Users\Admin\AppData\Local\Temp\45ba15303dd96b4524e85152812d5309ca8d8156333fe826033a9f84b6f699ec.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:1032
    • 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:3436

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        AFF1.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\AFF1.tmp
        • Size 481B
        • SHA256 bb54c087fdadcac059512d62b2aabba9cbc64bf2d5e0d0d466dec2024b401178
        • MD5 SHA1 SHA512

        svchost.exe

        • Path C:\Windows\apppatch\svchost.exe
        • Size 218KB
        • SHA256 fd4474c636166542ed75220322007b8b5c63ccadf7ecf174e7a45d22064b3e36
        • MD5 SHA1 SHA512 SSDEEP

        memory/1032-0-0x0000000000750000-0x00000000007A1000-memory.dmp

        memory/1032-1-0x0000000000400000-0x000000000045F000-memory.dmp

        memory/1032-13-0x0000000000400000-0x000000000045F000-memory.dmp

        memory/1032-12-0x0000000000750000-0x00000000007A1000-memory.dmp

        memory/1032-11-0x0000000000400000-0x00000000005AE000-memory.dmp

        memory/3436-14-0x0000000000400000-0x00000000005AE000-memory.dmp

        memory/3436-15-0x0000000000400000-0x00000000005AE000-memory.dmp

        memory/3436-16-0x00000000028D0000-0x0000000002978000-memory.dmp

        memory/3436-17-0x0000000000400000-0x00000000005AE000-memory.dmp

        memory/3436-22-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-20-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-18-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-23-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-79-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-78-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-76-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-75-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-74-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-73-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-72-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-71-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-70-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-69-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-68-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-67-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-66-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-65-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-64-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-63-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-62-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-60-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-59-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-58-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-57-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-56-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-55-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-54-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-53-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-52-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-51-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-50-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-49-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-48-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-47-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-45-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-44-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-43-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-42-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-41-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-40-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-39-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-38-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-37-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-36-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-35-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-34-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-33-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-31-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-30-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-29-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-28-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-27-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-25-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-24-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-77-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-61-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-46-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-32-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/3436-26-0x0000000002D00000-0x0000000002DB6000-memory.dmp