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Analysis

  • max time kernel
    110s
  • max time network
    119s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/12/2024, 07:07

General

  • Target

    ca41bde4f18fa9c7ef5db812a5778746e37a790cc83f61162bdb457105828200.exe

  • Size

    218KB

  • MD5

    3a1f35d8a236091c3c538363386a5866

  • SHA1

    2495a6178448a911aaeb7a3b1102e0fce9b563b5

  • SHA256

    ca41bde4f18fa9c7ef5db812a5778746e37a790cc83f61162bdb457105828200

  • SHA512

    b0ec350d256cffeefe2a13bb3aa24700900d7172bef67371fc847249a89fd0a49a9f12bcd9be3cb5ea40428653c27ddde9df583b754f68fffe34cf8cf68346e3

  • SSDEEP

    6144:xEQBDdO1z7L/EIhZDE9oLfFWlMZT7+DGaMwICC:xEGDdQNHEwWlMxYG/wIL

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\ca41bde4f18fa9c7ef5db812a5778746e37a790cc83f61162bdb457105828200.exe
    "C:\Users\Admin\AppData\Local\Temp\ca41bde4f18fa9c7ef5db812a5778746e37a790cc83f61162bdb457105828200.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:4080
    • 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:2876

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\8B3ZU6S9\login[2].htm

    Filesize

    162B

    MD5

    4f8e702cc244ec5d4de32740c0ecbd97

    SHA1

    3adb1f02d5b6054de0046e367c1d687b6cdf7aff

    SHA256

    9e17cb15dd75bbbd5dbb984eda674863c3b10ab72613cf8a39a00c3e11a8492a

    SHA512

    21047fea5269fee75a2a187aa09316519e35068cb2f2f76cfaf371e5224445e9d5c98497bd76fb9608d2b73e9dac1a3f5bfadfdc4623c479d53ecf93d81d3c9f

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\O4PTG2YB\login[2].htm

    Filesize

    593B

    MD5

    3b03d93d3487806337b5c6443ce7a62d

    SHA1

    93a7a790bb6348606cbdaf5daeaaf4ea8cf731d0

    SHA256

    7392749832c70fcfc2d440d7afc2f880000dd564930d95d634eb1199fa15de30

    SHA512

    770977beaeedafc5c98d0c32edc8c6c850f05e9f363bc9997fa73991646b02e5d40ceed0017b06caeab0db86423844bc4b0a9f0df2d8239230e423a7bfbd4a88

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\O4PTG2YB\login[4].htm

    Filesize

    168B

    MD5

    d57e3a550060f85d44a175139ea23021

    SHA1

    2c5cb3428a322c9709a34d04dd86fe7628f8f0a6

    SHA256

    43edf068d34276e8ade4113d4d7207de19fc98a2ae1c07298e593edae2a8774c

    SHA512

    0364fe6a010fce7a3f4a6344c84468c64b20fd131f3160fc649db78f1075ba52d8a1c4496e50dbe27c357e01ee52e94cdcda8f7927cba28d5f2f45b9da690063

  • C:\Users\Admin\AppData\Local\Temp\59E6.tmp

    Filesize

    61KB

    MD5

    3ee437afda17e82ca513cf2665a1d72b

    SHA1

    243a4e0c6cce18edeb478ca4975c5a4417b64c53

    SHA256

    8d615644eeda3349c9ecffcd0ed95158f8e5cc8781ea3eec0b54a6e646102e9c

    SHA512

    123d5e0542fcac66ce89151097db6c42e6bf0af22504c6ad7d449d07513e455c249eb91b7071527562912335a99e99a97671ed4e0696d7af53d825da2d79de07

  • C:\Users\Admin\AppData\Local\Temp\5A46.tmp

    Filesize

    1KB

    MD5

    068331b010e29a82743b1b4dc543f89a

    SHA1

    7be4c145bd5ec13a638161f6e7f97ffacddc6286

    SHA256

    c3e766ee987de2deb332e1ad65e4d3bd463688c0300f59227223a8274503d300

    SHA512

    0aaaf11bf810e62dd203cbee5c3590265313636211fa32b68677d5a97a9ae7bcae07a9f1c5b4af6894ce980366d3b97b0c0389c1e5b62d21c0503a75bf43343a

  • C:\Users\Admin\AppData\Local\Temp\7F53.tmp

    Filesize

    593B

    MD5

    926512864979bc27cf187f1de3f57aff

    SHA1

    acdeb9d6187932613c7fa08eaf28f0cd8116f4b5

    SHA256

    b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f

    SHA512

    f6f9fd3ca9305bec879cfcd38e64111a18e65e30d25c49e9f2cd546cbab9b2dcd03eca81952f6b77c0eaab20192ef7bef0d8d434f6f371811929e75f8620633b

  • C:\Users\Admin\AppData\Local\Temp\9C3B.tmp

    Filesize

    42KB

    MD5

    5b5a6544c2ffd685963fa4676b0ea2e5

    SHA1

    55209d0c3d8ee4314d6989d67ad7bb79689eaf09

    SHA256

    3d8171a68dee2b420fe57f5f30fe464c1d1e86ab8162b5ff9718e9ae488e8e68

    SHA512

    b7851bed41f61637f238df8fcf67ef1c72a8e9820fb91483877c375d24fade7e59817e7bd175b7d50a4f5f2f339fadf125c3117ca378c257dd92d5fd8b255ee2

  • C:\Users\Admin\AppData\Local\Temp\9C3B.tmp

    Filesize

    42KB

    MD5

    545bc08d8f64e91ab83e52ec65eabadb

    SHA1

    47bf51f936eca90de29d9a9b681ccfaeb5f5cfad

    SHA256

    f52093ae2ff5b7cbc419375ffafd21c83bad02c3911ea727b80f4342ecf8b011

    SHA512

    9752510e599681139e053a6d0104cd3d42adec707203726a80d9ce8d40ce0594a7c9783aa27a44fc93131e86963d282816f1015190a63138b5959871c3c64a25

  • C:\Users\Admin\AppData\Local\Temp\9C5F.tmp

    Filesize

    61KB

    MD5

    37342d6773b68130eaa51c1bb1f0bf49

    SHA1

    53c7713cb26a0bdc9408cc02350bb3a732beb16a

    SHA256

    2ffe44cd47983cb961262ae16f0b2e7ea530c1b68677308340b7af277a9b6d06

    SHA512

    deb704b0f624fa9439fd1253e14c89deac159d1261a9d942c9e20e0ae9565065540f4e0f55bfdcf9ef4719417a14882426e91428bc6a5d1b24c67d0bdca9c38b

  • C:\Users\Admin\AppData\Local\Temp\BB83.tmp

    Filesize

    1KB

    MD5

    1e76af6ef5af7cf2c0186b3f3df1a727

    SHA1

    7a5757bc536a020491507edcd311f2091def40de

    SHA256

    c48e951d7c85df2bf07b9c05387495536f098c4e805dfaecbd3299b5f5bb2752

    SHA512

    d37dab2d128d4a41d9d9fdcd1beb6245f68216456ad3b5ceb0c4011e3910198b204eda405b51a3829f1b0efc11a6cf7f842392bb563b1606ab2f00cd10381192

  • C:\Windows\apppatch\svchost.exe

    Filesize

    218KB

    MD5

    dcb06041449378435c3d993ffb29febb

    SHA1

    6df2f001a13d51b7dc7110379ffde0d47ea16b79

    SHA256

    94122c634b0538f776719f8d675b29d6a8bda741a510dca37551c5ca1b3970d8

    SHA512

    0f9556fb36d991ef84eb7964cf888fdf559dd351e16464f020da62b6ade3ec1cf4e4ebed639cb0327cc24014132126e1e3a80ce07630c3d187cca5d2397c6c48

  • memory/2876-52-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-44-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-28-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-63-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-79-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-78-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-77-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-76-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-75-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-74-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-24-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB

  • memory/2876-72-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-71-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-70-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-69-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-68-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-66-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-65-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-64-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-62-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-61-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-60-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-59-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-58-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-57-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-56-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-55-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-54-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-53-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-21-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-51-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-49-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-48-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-46-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-45-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-19-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-43-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-42-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-41-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-40-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-39-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-37-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-36-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-35-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-34-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-33-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-32-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-31-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-73-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-29-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-67-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-27-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-50-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-47-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-26-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-38-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-25-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-30-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-23-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/2876-13-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB

  • memory/2876-16-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB

  • memory/2876-17-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB

  • memory/2876-18-0x0000000002C00000-0x0000000002CA8000-memory.dmp

    Filesize

    672KB

  • memory/4080-0-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB

  • memory/4080-1-0x0000000002420000-0x0000000002471000-memory.dmp

    Filesize

    324KB

  • memory/4080-2-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/4080-15-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/4080-14-0x0000000002420000-0x0000000002471000-memory.dmp

    Filesize

    324KB

  • memory/4080-12-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB