Analysis

  • max time kernel
    141s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-01-2025 05:01

General

  • Target

    91520b0ecc4a419419920f18b4ae825e75b58f5fc228224279307c0a34ca3068.exe

  • Size

    213KB

  • MD5

    67f9897e999d205250aac92530c06672

  • SHA1

    1d86d425d675f9235f2e075a0f4aa43a120b17b8

  • SHA256

    91520b0ecc4a419419920f18b4ae825e75b58f5fc228224279307c0a34ca3068

  • SHA512

    bea1140e3ea9a2e94408475fc953150767d02b9250e3199dc908845174d0efded8435fdc2f1768ab2565c6445466df4cd6fd9033bdb664018e2b76230f2a19d1

  • SSDEEP

    6144:LQfbXnEreyARNf+fIfvEEDi3EJ3FzbPotDy:sXkej+f4VDOEVdbgt

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\91520b0ecc4a419419920f18b4ae825e75b58f5fc228224279307c0a34ca3068.exe
    "C:\Users\Admin\AppData\Local\Temp\91520b0ecc4a419419920f18b4ae825e75b58f5fc228224279307c0a34ca3068.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:3832
    • 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:876

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\H6N4U6J0\login[1].htm

    Filesize

    162B

    MD5

    4f8e702cc244ec5d4de32740c0ecbd97

    SHA1

    3adb1f02d5b6054de0046e367c1d687b6cdf7aff

    SHA256

    9e17cb15dd75bbbd5dbb984eda674863c3b10ab72613cf8a39a00c3e11a8492a

    SHA512

    21047fea5269fee75a2a187aa09316519e35068cb2f2f76cfaf371e5224445e9d5c98497bd76fb9608d2b73e9dac1a3f5bfadfdc4623c479d53ecf93d81d3c9f

  • C:\Users\Admin\AppData\Local\Temp\5544.tmp

    Filesize

    12KB

    MD5

    e1f035b24ce0e8137682b703d19315b5

    SHA1

    18712fd6ad888c146237d187332ccc904ff1f032

    SHA256

    117ea4f0f411e1aaeab307c087a57678abcba7e6aa96a5bd1f2d5d7026d453a0

    SHA512

    17a428fcea9d064e8318f0ef30da88c713209f5d591d2a4e9725d56663acdb96996569693804071aea17ddc793eade219409c4548e48d1ddc8814662236bae7d

  • C:\Users\Admin\AppData\Local\Temp\5544.tmp

    Filesize

    12KB

    MD5

    caa300673c11a7627a7b6346e1a93b61

    SHA1

    7ecaf36f1e150c478b6cfc3446ec7f0c662c071a

    SHA256

    42ae110a0ecd0d83c4f12314d42a585354b501856dc3c7b483123fcbc317f2aa

    SHA512

    f11f1182d2fdc14b2c64e2221091e318f76c9a41824977c1a93bf2077300bba919ca4a01c80340c4c20d239ac6dbadf091f544891f0ec72df62a6cc11231faa6

  • C:\Users\Admin\AppData\Local\Temp\92E9.tmp

    Filesize

    593B

    MD5

    926512864979bc27cf187f1de3f57aff

    SHA1

    acdeb9d6187932613c7fa08eaf28f0cd8116f4b5

    SHA256

    b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f

    SHA512

    f6f9fd3ca9305bec879cfcd38e64111a18e65e30d25c49e9f2cd546cbab9b2dcd03eca81952f6b77c0eaab20192ef7bef0d8d434f6f371811929e75f8620633b

  • C:\Users\Admin\AppData\Local\Temp\A03B.tmp

    Filesize

    61KB

    MD5

    a73fe0730893801cbd78e679722fe65f

    SHA1

    cd30b60def5900c52ec647f77f12ea519316b71a

    SHA256

    894f298eae744da2fa6150d6af562d0d1e044533dea0ac82a7bfe92c43e9d48d

    SHA512

    9732ada065dcf572ed9ae2d77ad3c610a8c0b4057a25e1176845e10c8cd7ba8e9517b5b5f75a4ced8e27b8ba20b33651ca7277371485d126c1b4840a1ef4f7fb

  • C:\Windows\apppatch\svchost.exe

    Filesize

    213KB

    MD5

    5d94e996b9fece90129626205729acb0

    SHA1

    1d6f6889e1cfa1e70150aa4ae9427e4e32eaa647

    SHA256

    6324517020fac21f8e0756a15a7a271e51900887a8883865b712b09ad99872f1

    SHA512

    0d9b11ed3c6cbac07a2694b77ae7dd371b9cff36d4ad0ccc58806ffa5c04a1f54c3f683c002b61026617bd8460fa3fa0813fc8a08fc8c5a7e6b0e81aa19ef2f0

  • memory/876-56-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-24-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-15-0x0000000000400000-0x000000000064B000-memory.dmp

    Filesize

    2.3MB

  • memory/876-19-0x0000000000400000-0x000000000064B000-memory.dmp

    Filesize

    2.3MB

  • memory/876-20-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-50-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-22-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-38-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-40-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-49-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-77-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-76-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-75-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-74-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-73-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-72-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-71-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-69-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-68-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-67-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-66-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-65-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-64-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-63-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-62-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-61-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-60-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-59-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-58-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-57-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-51-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-55-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-54-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-52-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-16-0x0000000000400000-0x000000000064B000-memory.dmp

    Filesize

    2.3MB

  • memory/876-17-0x0000000000400000-0x000000000064B000-memory.dmp

    Filesize

    2.3MB

  • memory/876-79-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-48-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-47-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-46-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-45-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-44-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-43-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-42-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-39-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-37-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-36-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-35-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-34-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-33-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-31-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-30-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-29-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-28-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-27-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-26-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-78-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-70-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-53-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-41-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-32-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-25-0x0000000003140000-0x00000000031F6000-memory.dmp

    Filesize

    728KB

  • memory/876-18-0x0000000002D50000-0x0000000002DF8000-memory.dmp

    Filesize

    672KB

  • memory/3832-0-0x0000000000400000-0x000000000064B000-memory.dmp

    Filesize

    2.3MB

  • memory/3832-2-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/3832-1-0x00000000023D0000-0x0000000002421000-memory.dmp

    Filesize

    324KB

  • memory/3832-11-0x0000000000400000-0x000000000064B000-memory.dmp

    Filesize

    2.3MB

  • memory/3832-13-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/3832-12-0x00000000023D0000-0x0000000002421000-memory.dmp

    Filesize

    324KB