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Analysis

  • max time kernel
    150s
  • max time network
    181s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/11/2022, 23:27

General

  • Target

    7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe

  • Size

    624KB

  • MD5

    a6fc40105117a5663929134ace126bab

  • SHA1

    92448ef679c4bd601b20c9efb1afc3ebfd6dd5bc

  • SHA256

    7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f

  • SHA512

    cfbce633174f2b92c5e348b9a7477ba132befd82343b99090cd0d502ba1d774b25facbb131de1e692bd4b623dc4258f0b4b1cef90a1a113a8aa0a97211675794

  • SSDEEP

    12288:teO2NPnq1aOX5gfIRD2oZAaN7CANofcwrxBieAjgy7FJaGaY/mXO:tGxp254uLzIF0wrX9OxJam/me

Malware Config

Signatures

  • ISR Stealer

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

  • ISR Stealer payload 5 IoCs
  • NirSoft MailPassView 3 IoCs

    Password recovery tool for various email clients

  • Nirsoft 3 IoCs
  • UPX packed file 9 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe
    "C:\Users\Admin\AppData\Local\Temp\7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3296
    • C:\Users\Admin\AppData\Local\Temp\7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe
      "C:\Users\Admin\AppData\Local\Temp\7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2000
      • C:\Users\Admin\AppData\Local\Temp\7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe
        /scomma "C:\Users\Admin\AppData\Local\Temp\5AxwbblGa9.ini"
        3⤵
          PID:4284
        • C:\Users\Admin\AppData\Local\Temp\7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\Eh0yZi6UuM.ini"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:3916

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\5AxwbblGa9.ini

      Filesize

      5B

      MD5

      d1ea279fb5559c020a1b4137dc4de237

      SHA1

      db6f8988af46b56216a6f0daf95ab8c9bdb57400

      SHA256

      fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

      SHA512

      720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

    • memory/2000-145-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2000-135-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2000-155-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2000-154-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/3916-151-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/3916-148-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/3916-150-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/3916-152-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/3916-153-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/4284-144-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/4284-143-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/4284-142-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/4284-140-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB