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Analysis

  • max time kernel
    148s
  • max time network
    151s
  • 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, 21:55

General

  • Target

    23edb53b418a41addc233dd18b8cedde5c27603e53be7e35c976c71f10fa28ff.exe

  • Size

    355KB

  • MD5

    1c1600535fba0d5b6162afed6203fc7f

  • SHA1

    046c6eb7cd3ce56150c34f8665670b2272f1024b

  • SHA256

    23edb53b418a41addc233dd18b8cedde5c27603e53be7e35c976c71f10fa28ff

  • SHA512

    89005095661e6f3326e4535ccebf0e16011aa08bd55743b4c79b76360ccbda4bd89820ca85b9512b24de1340769cd59e44b947442f8f3486755012d4fa3b2290

  • SSDEEP

    6144:igEmWPDNND9yRPzLq+YXFqaZiMLic9kzVd7EAC4TSs9Ei:EmWhND9yJz+b1FcMLmp2ATTSsd

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\23edb53b418a41addc233dd18b8cedde5c27603e53be7e35c976c71f10fa28ff.exe
    "C:\Users\Admin\AppData\Local\Temp\23edb53b418a41addc233dd18b8cedde5c27603e53be7e35c976c71f10fa28ff.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:1028
    • 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:1476

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\A761.tmp

    Filesize

    481B

    MD5

    af70db5716859e084469d8d7ced2aa81

    SHA1

    c31f06e0c1cb81c189ab14213829014cc4ff8282

    SHA256

    91d8c97158abe02f4f90c7314213a182dd0e6c62ebb1db5a8f9073583e5ba3d5

    SHA512

    7dc5fc9d138f67347b7bf65d5e80ef88d17025a4f9332af31f17b50ff1514ffb59903d0639bc82f6ca86e2ebdee974fa78811a374dbfad8a2639aa9c3c7c9e88

  • C:\Windows\apppatch\svchost.exe

    Filesize

    355KB

    MD5

    3a8cd9a82e04ca021d5d382fcb0526d9

    SHA1

    6d4783cb0bc03ff62269d79273775f403b2ba05d

    SHA256

    3638023536bc7065049869418a4bdba7b5221fde73d058b6eadf7e87f319e02c

    SHA512

    8025ae43dc6e46663a22228dc07fa91d2c67aff0ef4bf03586cfc81e95b84c1f4717f8a921cf91aeaabe35d4f20e586d1984936e725215f4aafc3b39a53140fc

  • memory/1028-9-0x00000000000F0000-0x000000000014F000-memory.dmp

    Filesize

    380KB

  • memory/1476-47-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-40-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-16-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-17-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-34-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-73-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-72-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-71-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-70-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-69-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-68-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-67-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-66-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-65-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-14-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-64-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-63-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-62-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-61-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-60-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-59-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-58-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-56-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-55-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-54-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-52-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-51-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-49-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-48-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-10-0x0000000003200000-0x00000000032A8000-memory.dmp

    Filesize

    672KB

  • memory/1476-13-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-46-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-57-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-43-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-42-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-41-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-45-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-39-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-38-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-36-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-35-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-33-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-32-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-31-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-30-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-29-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-28-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-27-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-26-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-25-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-24-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-22-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-21-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-20-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-44-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-18-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-53-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-50-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-37-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-23-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-19-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB

  • memory/1476-179-0x00000000033B0000-0x0000000003466000-memory.dmp

    Filesize

    728KB