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Analysis

  • max time kernel
    182s
  • max time network
    187s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/11/2022, 16:13

General

  • Target

    ac474724d9fb41c8252fdeb3cabae9212b7a82bbef5d48cd45aa7c53a38ed34d.exe

  • Size

    316KB

  • MD5

    df3cdfe099877b9e5d8aa57cd6ac6cc4

  • SHA1

    4e76f3993e44826517c0d23c5357c386d2af5ae9

  • SHA256

    ac474724d9fb41c8252fdeb3cabae9212b7a82bbef5d48cd45aa7c53a38ed34d

  • SHA512

    a140c963de1d70246296e263586dfda76d64629cbd83e73d440d37ed53777b57a58b403bd1504e6cd4206874976ed8a8a2e714ab3ce7dc5919b2025313ee810d

  • SSDEEP

    6144:8F3jZLdg8k2nY3hx4rm2KNshkp3nzPO7wGfY0t1y6eeOdT:md3k2nLm2KNshq3zy/YD65KT

Malware Config

Signatures

  • ISR Stealer

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

  • ISR Stealer payload 4 IoCs
  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • Nirsoft 2 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 behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ac474724d9fb41c8252fdeb3cabae9212b7a82bbef5d48cd45aa7c53a38ed34d.exe
    "C:\Users\Admin\AppData\Local\Temp\ac474724d9fb41c8252fdeb3cabae9212b7a82bbef5d48cd45aa7c53a38ed34d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1300
    • C:\Users\Admin\AppData\Local\Temp\ac474724d9fb41c8252fdeb3cabae9212b7a82bbef5d48cd45aa7c53a38ed34d.exe
      C:\Users\Admin\AppData\Local\Temp\ac474724d9fb41c8252fdeb3cabae9212b7a82bbef5d48cd45aa7c53a38ed34d.exe
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1444
      • C:\Users\Admin\AppData\Local\Temp\ac474724d9fb41c8252fdeb3cabae9212b7a82bbef5d48cd45aa7c53a38ed34d.exe
        /scomma "C:\Users\Admin\AppData\Local\Temp\J6IOpKWFuI.ini"
        3⤵
          PID:624
        • C:\Users\Admin\AppData\Local\Temp\ac474724d9fb41c8252fdeb3cabae9212b7a82bbef5d48cd45aa7c53a38ed34d.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\SUDXDk5DWy.ini"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:4352

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\J6IOpKWFuI.ini

      Filesize

      5B

      MD5

      d1ea279fb5559c020a1b4137dc4de237

      SHA1

      db6f8988af46b56216a6f0daf95ab8c9bdb57400

      SHA256

      fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

      SHA512

      720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

    • memory/624-144-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/624-145-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/624-140-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/624-142-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/624-143-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/1300-134-0x0000000000AC0000-0x0000000000AC4000-memory.dmp

      Filesize

      16KB

    • memory/1444-133-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1444-147-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1444-137-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1444-154-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/4352-149-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/4352-151-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/4352-152-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/4352-153-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB