Analysis

  • max time kernel
    106s
  • 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, 14:11

General

  • Target

    25208ab0683672a9d4c63e3a8ae3def66131fe7b6f560d9d5db0904ba6a8706fN.exe

  • Size

    355KB

  • MD5

    e24702f462209a54914da9e8a665e0b0

  • SHA1

    c6968be32548ab46cb85a6c9e26edc33728ee43a

  • SHA256

    25208ab0683672a9d4c63e3a8ae3def66131fe7b6f560d9d5db0904ba6a8706f

  • SHA512

    70f3cd8a90b2a167bb7791438aa79471da9fce6f2b935d4bbe564bcd739c3b5529d49b9136b51d113a1aa88c69e039876563559dc6980b1ea493a311deea011e

  • SSDEEP

    6144:I3EmWPDNND9yRPzLq+YXFqaZiMLic9kzVd7EAC4TSs9EiS:TmWhND9yJz+b1FcMLmp2ATTSsdS

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\25208ab0683672a9d4c63e3a8ae3def66131fe7b6f560d9d5db0904ba6a8706fN.exe
    "C:\Users\Admin\AppData\Local\Temp\25208ab0683672a9d4c63e3a8ae3def66131fe7b6f560d9d5db0904ba6a8706fN.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:3612
    • 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:4948

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\8835.tmp

          Filesize

          481B

          MD5

          d6b7ebe5c5691ff3b236859f13a209cf

          SHA1

          0e00c58ac7ed908f5f60c59f6d7d1d19d70f89d8

          SHA256

          2a6bc34b8f84b3fe6b0251f184386cefbbaec71e56a970a19b7cdf2bf9ec0819

          SHA512

          e03a71299e1626dff849e2ab6379ded29ba5255e713be909ad264e6b55dc61364c917d93f52cdf23cb7c8775a0bae6711702cb3ee5f02929590b93d360a48516

        • C:\Windows\apppatch\svchost.exe

          Filesize

          355KB

          MD5

          7ef22343e7367928bffd70710fc01267

          SHA1

          07bff131efdfae32a09cc89786e9e03fbcb50016

          SHA256

          66648148e023069bfc5da3f35656dc146afb1c3f478e7c915d8254381c94a1eb

          SHA512

          625cec9538801bf3e09b57b39a6a9e900d3de7788a6ec82721977d08bd6d1ab7f9935fdfc7b791e360e5f92617fa9abe3920bb577a218a7b735ada39eb57d132

        • memory/3612-9-0x0000000000400000-0x000000000045F000-memory.dmp

          Filesize

          380KB

        • memory/4948-10-0x0000000002710000-0x00000000027B8000-memory.dmp

          Filesize

          672KB

        • memory/4948-13-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-14-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-16-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-25-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-73-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-72-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-71-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-70-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-69-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-67-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-64-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-63-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-62-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-61-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-60-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-59-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-58-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-56-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-55-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-54-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-52-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-51-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-49-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-48-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-47-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-46-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-45-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-43-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-42-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-41-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-40-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-39-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-38-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-37-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-36-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-35-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-33-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-32-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-31-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-30-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-29-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-28-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-26-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-24-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-23-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-68-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-66-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-65-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-22-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-57-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-21-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-53-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-20-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-50-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-19-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-44-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-18-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-34-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-17-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-27-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB

        • memory/4948-165-0x0000000002B00000-0x0000000002BB6000-memory.dmp

          Filesize

          728KB