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Analysis

  • max time kernel
    123s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    19/12/2024, 01:23

General

  • Target

    a4b36ec5a5def2a86ff298b3c367d7c3fdb4ea5e292f0c2935897ed9b6d63477.exe

  • Size

    686KB

  • MD5

    6ccdfc62326c34cc2593ed95867c418f

  • SHA1

    88a8e133601f9a0b3f5ee56e18e8718d57c151d2

  • SHA256

    a4b36ec5a5def2a86ff298b3c367d7c3fdb4ea5e292f0c2935897ed9b6d63477

  • SHA512

    b8ba9baa803c36963313bba7b48c1ace9a79c5d43107d5775b71bde2966e472f0bf12c6ba2797d39fe0a75116c563bddc8b9e3d7912b1e558977c5b73f0fab28

  • SSDEEP

    12288:5mWhND9yJz+b1FcMLmp2ATTSsdApVHyGbs2CYPHrLpVmCbHDSgpX:5mUNJyJqb1FcMap2ATT5itjCYZ3DSoX

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
  • Loads dropped DLL 2 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 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a4b36ec5a5def2a86ff298b3c367d7c3fdb4ea5e292f0c2935897ed9b6d63477.exe
    "C:\Users\Admin\AppData\Local\Temp\a4b36ec5a5def2a86ff298b3c367d7c3fdb4ea5e292f0c2935897ed9b6d63477.exe"
    1⤵
    • Loads dropped DLL
    • Modifies WinLogon
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: RenamesItself
    • Suspicious use of WriteProcessMemory
    PID:1668
    • 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:2788

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\2ABC.tmp

    Filesize

    12KB

    MD5

    caa300673c11a7627a7b6346e1a93b61

    SHA1

    7ecaf36f1e150c478b6cfc3446ec7f0c662c071a

    SHA256

    42ae110a0ecd0d83c4f12314d42a585354b501856dc3c7b483123fcbc317f2aa

    SHA512

    f11f1182d2fdc14b2c64e2221091e318f76c9a41824977c1a93bf2077300bba919ca4a01c80340c4c20d239ac6dbadf091f544891f0ec72df62a6cc11231faa6

  • C:\Users\Admin\AppData\Local\Temp\4216.tmp

    Filesize

    593B

    MD5

    926512864979bc27cf187f1de3f57aff

    SHA1

    acdeb9d6187932613c7fa08eaf28f0cd8116f4b5

    SHA256

    b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f

    SHA512

    f6f9fd3ca9305bec879cfcd38e64111a18e65e30d25c49e9f2cd546cbab9b2dcd03eca81952f6b77c0eaab20192ef7bef0d8d434f6f371811929e75f8620633b

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

    Filesize

    42KB

    MD5

    f720b6ddcdfc24b153994a4631222fd0

    SHA1

    04097a37a8b2f74038ff0eab0027b013aba6318f

    SHA256

    d645593bc65b648f0822eb3c489d1abcd5663438522a6e1c632fe417506e66dd

    SHA512

    34325646792e580ef9fae2d404d8872c149dd5a387a74f2bb7692dc2c87debfb53b3841afc7c9fafac17fff006c10fca04d0ed9c686ae2a870717b2d78ba8296

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

    Filesize

    42KB

    MD5

    f89f3dd16d0c4872708486d58a52156d

    SHA1

    fb18c2964dbfd12a17f7452fa33a1a0d583595b6

    SHA256

    0ac489595a948ff126ce06964b9c313d447395651e3fae26a192a94b621bb209

    SHA512

    ce1293890ba16b44bf795af476ce3bc95e67b7fe659cdd68e6e4de6051ae80e7de7834924f95fad396ced2597b88ff94ff46970803ec1848ced6f70777419f8b

  • C:\Users\Admin\AppData\Local\Temp\E74C.tmp

    Filesize

    1KB

    MD5

    d42928375f13292b59f3b1353017a133

    SHA1

    7649bd527128540162bf96a3e7d3de922eeb1ddf

    SHA256

    df7298de8e4dff43212ad005cee01f147ae8fc18db83f17d390794b1b1488ac8

    SHA512

    6e17455338136b4b0e360565b19c338f5bfb712607224d2aeab09df682f86bbb822fec706bcf099d4252f398464750870797914ff9059b6ad7f6888cafa6025b

  • \Windows\AppPatch\svchost.exe

    Filesize

    686KB

    MD5

    2c32db39d9de8a653ee6f65cec55dbc5

    SHA1

    250769164def7ea330648736a7ea34f5bc94998a

    SHA256

    94c1ac8935932544215b152037f66b17d161e70dc46a6605c944f1dbec6b7099

    SHA512

    d09501de01ceab583d1452c4dec88593c1bd7219027576f629dc6d89e56a29b7f2659edc4ab6e4604e2c8e63e8baffd5f582667b02fff5f9dd806f756ca84f18

  • memory/1668-12-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2788-63-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-58-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-18-0x0000000002020000-0x00000000020C8000-memory.dmp

    Filesize

    672KB

  • memory/2788-16-0x0000000002020000-0x00000000020C8000-memory.dmp

    Filesize

    672KB

  • memory/2788-14-0x0000000002020000-0x00000000020C8000-memory.dmp

    Filesize

    672KB

  • memory/2788-30-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-28-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-27-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-36-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-40-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-78-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-77-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-76-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-75-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-74-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-73-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-72-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-71-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-70-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-69-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-68-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-67-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-65-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-64-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-24-0x0000000002020000-0x00000000020C8000-memory.dmp

    Filesize

    672KB

  • memory/2788-62-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-61-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-60-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-59-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-22-0x0000000002020000-0x00000000020C8000-memory.dmp

    Filesize

    672KB

  • memory/2788-57-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-56-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-55-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-54-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-53-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-52-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-51-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-50-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-49-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-48-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-47-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-46-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-45-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-44-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-43-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-41-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-39-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-38-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-37-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-66-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-35-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-34-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-20-0x0000000002020000-0x00000000020C8000-memory.dmp

    Filesize

    672KB

  • memory/2788-32-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-42-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-33-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB

  • memory/2788-199-0x0000000002410000-0x00000000024C6000-memory.dmp

    Filesize

    728KB