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Analysis

  • max time kernel
    83s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/11/2022, 18:24

General

  • Target

    9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe

  • Size

    411KB

  • MD5

    05de72909298f6ce51e8c0207db5a6c1

  • SHA1

    7a52632ad804a1a3cd8251f2c0a6517207dbde6e

  • SHA256

    9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25

  • SHA512

    00334d94601f35db1a0d6c3e2d9b6c6981b386bf3845ecbd786e86e5e775578b568c2db75ad1f0587cd17dba1ce36a06f7d2a598cb2872767d9588c57adba2d5

  • SSDEEP

    12288:uSazSusUabSl3jl4EkYHJzhZoTLxFHuiN:uL3R4EjVyLnOiN

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.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe
    "C:\Users\Admin\AppData\Local\Temp\9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4900
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4976
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
        /scomma "C:\Users\Admin\AppData\Local\Temp\c5X6MggClf.ini"
        3⤵
          PID:3592
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\NQP1cz53ek.ini"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:3392
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe" /FSILlzCwXB /C:\Users\Admin\AppData\Roaming\FSILlzCwXB\FSILlzCwXB.exe
        2⤵
        • Adds Run key to start application
        PID:3240

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\c5X6MggClf.ini

      Filesize

      5B

      MD5

      d1ea279fb5559c020a1b4137dc4de237

      SHA1

      db6f8988af46b56216a6f0daf95ab8c9bdb57400

      SHA256

      fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

      SHA512

      720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

    • memory/3240-161-0x0000000075310000-0x00000000758C1000-memory.dmp

      Filesize

      5.7MB

    • memory/3240-160-0x0000000075310000-0x00000000758C1000-memory.dmp

      Filesize

      5.7MB

    • memory/3240-159-0x0000000075310000-0x00000000758C1000-memory.dmp

      Filesize

      5.7MB

    • memory/3240-158-0x0000000000400000-0x0000000000408000-memory.dmp

      Filesize

      32KB

    • memory/3392-153-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/3392-152-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/3392-151-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/3392-149-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/3592-142-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/3592-145-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/3592-146-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/3592-143-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/3592-140-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/4900-154-0x0000000075310000-0x00000000758C1000-memory.dmp

      Filesize

      5.7MB

    • memory/4900-132-0x0000000075310000-0x00000000758C1000-memory.dmp

      Filesize

      5.7MB

    • memory/4900-162-0x0000000075310000-0x00000000758C1000-memory.dmp

      Filesize

      5.7MB

    • memory/4976-155-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/4976-156-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/4976-144-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/4976-136-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/4976-134-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB