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Analysis

  • max time kernel
    135s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/11/2022, 07:56

General

  • Target

    38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe

  • Size

    420KB

  • MD5

    3f22d23607e4bdaa606f3bc05c4e7d40

  • SHA1

    70b913508d11009f241c2e948d337a750b654faa

  • SHA256

    38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2

  • SHA512

    42a824b4465f42003e030cf109472fa14668e3ed9f1bb1c132eb6c22bbf2c05a79ec7f28f7d49ac9466eab987eef3edce471e7e99b50896891bb1da112e0c0bd

  • SSDEEP

    6144:lI3F3FgcxNJZAX0bK9FMBLPeW41I10fTEEPlCg0p1/:lIVVgcxNJZAkjpSYEt01/

Malware Config

Signatures

  • ISR Stealer

    ISR Stealer is a modified version of Hackhound Stealer written in visual basic.

  • ISR Stealer payload 3 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe
    "C:\Users\Admin\AppData\Local\Temp\38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:604
    • C:\Users\Admin\AppData\Local\Temp\38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe
      "C:\Users\Admin\AppData\Local\Temp\38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:2032
      • C:\Users\Admin\AppData\Local\Temp\38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe
        "C:\Users\Admin\AppData\Local\Temp\38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe"
        3⤵
          PID:404
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 404 -s 296
            4⤵
            • Program crash
            PID:4068
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 404 -ip 404
      1⤵
        PID:4604

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

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      Downloads

      • memory/404-134-0x0000000000400000-0x0000000000439000-memory.dmp

        Filesize

        228KB

      • memory/404-136-0x0000000000400000-0x0000000000439000-memory.dmp

        Filesize

        228KB

      • memory/404-137-0x0000000000400000-0x0000000000439000-memory.dmp

        Filesize

        228KB