Analysis

  • max time kernel
    115s
  • max time network
    120s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/09/2024, 17:54

General

  • Target

    8304ea0c122589dc46c6a2ba03eaf62940aa0c1ac9739839a9ebaa43727f2697N.exe

  • Size

    397KB

  • MD5

    a9b48b27e35a10068dab58d13fdf0b00

  • SHA1

    98bff5989d1d6db4435f1da4efeffbbcf1bee631

  • SHA256

    8304ea0c122589dc46c6a2ba03eaf62940aa0c1ac9739839a9ebaa43727f2697

  • SHA512

    41695ae0b84f77a43fc86c9825511a8542e0796939a10280c609f9839f5ce08a53dd68f4f7895ffdef57434e638ae1d356612c25537c3d3144f6c8ed0bce0dd2

  • SSDEEP

    6144:oXEmWPDNND9yRPzLq+YXFqaZiMLic9kzVd7EAC4TSs9EiWp5U5ai2:zmWhND9yJz+b1FcMLmp2ATTSsdWp672

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

    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\8304ea0c122589dc46c6a2ba03eaf62940aa0c1ac9739839a9ebaa43727f2697N.exe
    "C:\Users\Admin\AppData\Local\Temp\8304ea0c122589dc46c6a2ba03eaf62940aa0c1ac9739839a9ebaa43727f2697N.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:3536
    • 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:3040
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4380,i,11251706013556949551,5157034131170452377,262144 --variations-seed-version --mojo-platform-channel-handle=4188 /prefetch:8
    1⤵
      PID:4924

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\apppatch\svchost.exe

            Filesize

            397KB

            MD5

            c7456cb4ddd80fe5f80d204786d2812d

            SHA1

            cbc66180e26e659611e4a6d90e4d10cc9c989d38

            SHA256

            8159308103cd43816bae5a941241bbbc30bedd34eac2ba7656db5ef43a8adad4

            SHA512

            dcff730fd6853a3570e42907342288ab9328d7e22001bc095262bd015b98a1f007865bedaa2d64adbf7bbcc91276adbd59675009749739fc8cebc41c56fe1ade

          • memory/3040-10-0x0000000002730000-0x00000000027D8000-memory.dmp

            Filesize

            672KB

          • memory/3040-11-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-15-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-13-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-25-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-27-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-72-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-70-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-69-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-67-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-66-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-65-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-64-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-63-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-62-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-61-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-60-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-59-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-58-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-57-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-56-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-55-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-54-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-53-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-52-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-51-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-50-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-48-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-47-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-46-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-45-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-43-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-42-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-41-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-40-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-39-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-38-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-37-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-36-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-35-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-34-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-33-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-32-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-31-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-30-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-29-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-28-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-26-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-24-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-23-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-22-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-21-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-20-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-19-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-18-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-17-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-71-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-68-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-49-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-44-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-16-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3040-163-0x0000000002B40000-0x0000000002BF6000-memory.dmp

            Filesize

            728KB

          • memory/3536-9-0x0000000000400000-0x0000000000465000-memory.dmp

            Filesize

            404KB