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Analysis

  • max time kernel
    94s
  • max time network
    114s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/04/2024, 06:13

General

  • Target

    f76d8260aeef01c0040deb7e4987aced_JaffaCakes118.exe

  • Size

    1.3MB

  • MD5

    f76d8260aeef01c0040deb7e4987aced

  • SHA1

    52794a6360e479738a7c418a3e8275378239ef33

  • SHA256

    e8cd0ef98abb8b7f8c3a7c05c7e1748963d0e4c23ef29d0dc350ed1373833a7c

  • SHA512

    0f4bccb9fa5457255847dd1c6fbccc64cb82a057fd2daf47f7fdb83b6363d82b81b0bed75830bb4a15ee7ec9342dbce5628d5867d9b827b18879d6fad978c426

  • SSDEEP

    24576:TNR2zaQBt37/CZ0w1PeWnzqhqCC6+PEDdZp/K/LsOBQ8tcp/:yUsrC6aEpZpbZ

Malware Config

Signatures

  • ISR Stealer

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

  • ISR Stealer payload 3 IoCs
  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • Nirsoft 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • UPX packed file 10 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 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f76d8260aeef01c0040deb7e4987aced_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\f76d8260aeef01c0040deb7e4987aced_JaffaCakes118.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2168
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1416
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
        /scomma "C:\Users\Admin\AppData\Local\Temp\47ICxFp7rk.ini"
        3⤵
          PID:876
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\u9DY80IbPK.ini"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:2284

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\47ICxFp7rk.ini

      Filesize

      5B

      MD5

      d1ea279fb5559c020a1b4137dc4de237

      SHA1

      db6f8988af46b56216a6f0daf95ab8c9bdb57400

      SHA256

      fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

      SHA512

      720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

    • memory/876-10-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/876-5-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/876-7-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/876-9-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/876-11-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/1416-0-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1416-2-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1416-21-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2284-14-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2284-16-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2284-18-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2284-20-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2284-19-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB