Analysis

  • max time kernel
    107s
  • max time network
    119s
  • 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, 12:12

General

  • Target

    2b05c4a36ab6245b80384d16424f6b51eef7998253a860004efabee8303997c4N.exe

  • Size

    686KB

  • MD5

    0250626b95d52fad3640bbdb4af79290

  • SHA1

    685fc21b80ba037e9d4a69939eb23d99ce0d0a93

  • SHA256

    2b05c4a36ab6245b80384d16424f6b51eef7998253a860004efabee8303997c4

  • SHA512

    791591b6abf5cd1ef40a7ee4537a1156dd8788e8ca914852b392916880db4ec4cb788bd0384d0b0457e8ac40fce2be29c15febff8a220cbc685d4301c4e09051

  • SSDEEP

    12288:nmWhND9yJz+b1FcMLmp2ATTSsdApVHyGbs2CYPHrLpVmCbHDSgp:nmUNJyJqb1FcMap2ATT5itjCYZ3DSo

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\2b05c4a36ab6245b80384d16424f6b51eef7998253a860004efabee8303997c4N.exe
    "C:\Users\Admin\AppData\Local\Temp\2b05c4a36ab6245b80384d16424f6b51eef7998253a860004efabee8303997c4N.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:1520
    • 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:4952

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\BF0E.tmp

          Filesize

          24KB

          MD5

          6770a0860603241a726573e950cc143a

          SHA1

          e99890e532f670b2eff524529077870f1353b182

          SHA256

          ee462dabc2e61ef7d5eb38fac5806a434f32f3557fa0210dbb9b76f4dd335ef3

          SHA512

          b5a74bf414295183316558051970a83c0c099a5c5cd3229b6615eef9d51d08fbd377903f2e16f2a82837651aa1b09da61bd2a96e8e8ea8dbcf99c8cc2099c897

        • C:\Windows\apppatch\svchost.exe

          Filesize

          686KB

          MD5

          782641bb9012e009ca84f09dffeeeb70

          SHA1

          784680a9b2ceaeeab4d59dd92dc845b21b38cd3a

          SHA256

          d43f518c88f34c4f69dfc0bb7d64bf3df827ec60ac23008cc8528ddf56101e5f

          SHA512

          a0f0a28aa8fe597ada0b770f9fd8f4ff3187f12c6537c977fe661c2ef513a622056ee73fc69d9eb95a6979b973837df5adf1aab5fe21791f1466d4d69e11b316

        • memory/4952-10-0x0000000002A00000-0x0000000002AA8000-memory.dmp

          Filesize

          672KB

        • memory/4952-13-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-16-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-14-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-17-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-22-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-48-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-74-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-72-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-71-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-70-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-69-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-68-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-67-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-66-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-65-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-64-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-63-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-62-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-61-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-60-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-59-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-58-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-56-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-55-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-54-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-53-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-51-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-50-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-49-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-47-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-46-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-45-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-44-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-43-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-42-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-41-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-40-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-39-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-38-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-37-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-35-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-34-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-33-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-32-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-31-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-29-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-28-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-27-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-26-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-25-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-24-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-73-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-57-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-52-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-21-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-20-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-36-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-19-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-18-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-30-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-23-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB

        • memory/4952-164-0x0000000002BB0000-0x0000000002C66000-memory.dmp

          Filesize

          728KB