Analysis

  • max time kernel
    118s
  • max time network
    121s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/11/2024, 17:16

General

  • Target
    ac37cb2a4fb22b0e1e5bf7e0b77d641a174d147ea6e6e1a6744e24e05bf73755.exe
  • Size 375KB
  • Sample241124-vs6reswnfr
  • SHA256 ac37cb2a4fb22b0e1e5bf7e0b77d641a174d147ea6e6e1a6744e24e05bf73755
  • 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\ac37cb2a4fb22b0e1e5bf7e0b77d641a174d147ea6e6e1a6744e24e05bf73755.exe
    "C:\Users\Admin\AppData\Local\Temp\ac37cb2a4fb22b0e1e5bf7e0b77d641a174d147ea6e6e1a6744e24e05bf73755.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:440
    • 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:1940

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7503.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\7503.tmp
        • Size 1KB
        • SHA256 c2316ac0066f66f3c3084f7bb02a02ac25671c5346b8b88cbadf402372d7e586
        • MD5 SHA1 SHA512

        ECB5.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\ECB5.tmp
        • Size 593B
        • SHA256 b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f
        • MD5 SHA1 SHA512

        svchost.exe

        • Path C:\Windows\apppatch\svchost.exe
        • Size 375KB
        • SHA256 37e49c37cc83dfe8eea9cf78cf7754ec0d535c2269e9b912b6e28ed701fb2d3e
        • MD5 SHA1 SHA512 SSDEEP

        memory/440-0-0x0000000000400000-0x0000000000464000-memory.dmp

        memory/440-12-0x0000000000400000-0x0000000000464000-memory.dmp

        memory/1940-58-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-53-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-16-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-19-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-17-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-36-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-30-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-25-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-23-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-20-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-45-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-77-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-76-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-74-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-73-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-72-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-71-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-70-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-69-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-68-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-67-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-65-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-64-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-63-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-62-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-61-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-60-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-59-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-9-0x0000000000400000-0x0000000000464000-memory.dmp

        memory/1940-57-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-13-0x0000000002940000-0x00000000029E8000-memory.dmp

        memory/1940-56-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-43-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-55-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-52-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-51-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-49-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-48-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-47-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-44-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-54-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-42-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-41-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-40-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-39-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-38-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-37-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-35-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-33-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-34-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-32-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-31-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-29-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-28-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-27-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-26-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-24-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-21-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-22-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-66-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-50-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-46-0x0000000002B30000-0x0000000002BE6000-memory.dmp

        memory/1940-180-0x0000000000400000-0x0000000000464000-memory.dmp

        memory/1940-181-0x0000000002B30000-0x0000000002BE6000-memory.dmp