Analysis

  • max time kernel
    118s
  • 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
    09-01-2025 02:44

General

  • Target

    feb7b99be67aefead18ffafeddc60a35e394429f35e31d50989200ff7e6e8824N.exe

  • Size

    217KB

  • MD5

    b8003e01d31e99b9303245e26d90ec90

  • SHA1

    1c07923729c731e9d44ae38bc91d64c5ff3e4356

  • SHA256

    feb7b99be67aefead18ffafeddc60a35e394429f35e31d50989200ff7e6e8824

  • SHA512

    a8df6d9071c43327fc2f6376c5acaf0fa15b8b258d81e57e182069d5f0790c0c2c5e91141e0878aba8793752ea03a9499a9d8f11de5a88c836e364f983e8f7a0

  • SSDEEP

    6144:4rRaTyDOnlo7eM+mlkWgRXOqobzWjozm2ulYM6Y:KsTbzu1glovW4EH6Y

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\feb7b99be67aefead18ffafeddc60a35e394429f35e31d50989200ff7e6e8824N.exe
    "C:\Users\Admin\AppData\Local\Temp\feb7b99be67aefead18ffafeddc60a35e394429f35e31d50989200ff7e6e8824N.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:3940
    • 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:1556

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\apppatch\svchost.exe

    Filesize

    217KB

    MD5

    80f70920444888f392792d4b4a5c982c

    SHA1

    3ed22490a16c55e5aef2e77faac4cb6616edb450

    SHA256

    e51bd52118d858a0c71b6588e3e7b7baa8e0a6cb150d687c1c099383523fd856

    SHA512

    71803f1306aa91e0e5b5f5d555c69019e90a9bcc8d3ebf1a1ebb4bb6b2aa14c209abd11662b53b12c75f197ecd050e97d86abdb5bb28501c5df874c217abd4e7

  • memory/1556-59-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-20-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-17-0x0000000000400000-0x0000000000589000-memory.dmp

    Filesize

    1.5MB

  • memory/1556-18-0x00000000028B0000-0x0000000002958000-memory.dmp

    Filesize

    672KB

  • memory/1556-26-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-57-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-58-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-25-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-19-0x0000000000400000-0x0000000000589000-memory.dmp

    Filesize

    1.5MB

  • memory/1556-56-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-24-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-22-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-33-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-45-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-79-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-78-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-77-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-76-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-75-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-73-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-72-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-71-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-70-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-69-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-68-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-67-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-66-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-65-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-64-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-63-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-62-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-61-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-60-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-15-0x0000000000400000-0x0000000000589000-memory.dmp

    Filesize

    1.5MB

  • memory/1556-46-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-51-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-16-0x0000000000400000-0x0000000000589000-memory.dmp

    Filesize

    1.5MB

  • memory/1556-55-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-54-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-53-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-52-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-50-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-49-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-48-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-47-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-44-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-43-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-42-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-41-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-40-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-39-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-38-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-37-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-36-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-35-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-34-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-32-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-31-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-30-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-29-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-28-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-27-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/1556-74-0x0000000002D00000-0x0000000002DB6000-memory.dmp

    Filesize

    728KB

  • memory/3940-1-0x00000000022D0000-0x0000000002321000-memory.dmp

    Filesize

    324KB

  • memory/3940-12-0x0000000000400000-0x0000000000589000-memory.dmp

    Filesize

    1.5MB

  • memory/3940-2-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/3940-0-0x0000000000400000-0x0000000000589000-memory.dmp

    Filesize

    1.5MB

  • memory/3940-14-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/3940-13-0x00000000022D0000-0x0000000002321000-memory.dmp

    Filesize

    324KB