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Analysis

  • max time kernel
    68s
  • max time network
    53s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    27/11/2022, 00:49

General

  • Target

    16b775d01e522b0631272e77daa42cb756e53b52528545f07a1d5f712227fdae.exe

  • Size

    339KB

  • MD5

    a2cf6d18298eb04d2959f5a6c70099d3

  • SHA1

    87e5e13e2d434a8d61988df6bd401ea27b354f8f

  • SHA256

    16b775d01e522b0631272e77daa42cb756e53b52528545f07a1d5f712227fdae

  • SHA512

    8c32f78af6945ab660f7277e58b9d17a5df96327b14d55dde2c5418a782d871cacca27f150f504c8e32ad6129ded765fb5b3df12d055087b36db40fbb2555281

  • SSDEEP

    6144:G8cPjWN+vQIMmBhnNMIRW6qS9JK6n0GbFL/dxVjiN7nfP8DHY:G8aSN+vQtm/DqkjFLFLwfPK4

Malware Config

Signatures

  • ISR Stealer

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

  • ISR Stealer payload 6 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.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\16b775d01e522b0631272e77daa42cb756e53b52528545f07a1d5f712227fdae.exe
    "C:\Users\Admin\AppData\Local\Temp\16b775d01e522b0631272e77daa42cb756e53b52528545f07a1d5f712227fdae.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1600
    • C:\Windows\SysWOW64\svchost.exe
      "C:\Windows\system32\svchost.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1728
      • C:\Windows\SysWOW64\svchost.exe
        /scomma "C:\Users\Admin\AppData\Local\Temp\5Ckq2qR01t.ini"
        3⤵
          PID:1732
        • C:\Windows\SysWOW64\svchost.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\6ao2rMdNiO.ini"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:2024

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\5Ckq2qR01t.ini

      Filesize

      5B

      MD5

      d1ea279fb5559c020a1b4137dc4de237

      SHA1

      db6f8988af46b56216a6f0daf95ab8c9bdb57400

      SHA256

      fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

      SHA512

      720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

    • memory/1600-66-0x0000000074100000-0x00000000746AB000-memory.dmp

      Filesize

      5.7MB

    • memory/1600-54-0x00000000752B1000-0x00000000752B3000-memory.dmp

      Filesize

      8KB

    • memory/1728-78-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1728-60-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1728-58-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1728-86-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1728-55-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1728-70-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1728-56-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1732-74-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/1732-73-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/1732-75-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/1732-72-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/1732-67-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/2024-79-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2024-83-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2024-84-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2024-85-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB