Analysis

  • max time kernel
    51s
  • max time network
    54s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 17:29

General

  • Target

    ea33954cd8edcd21ccf3b9a908d1447377af6e72307cecf1dc429500b64af41c.exe

  • Size

    424KB

  • MD5

    c97745989a2fe42883a70ba85031c6a0

  • SHA1

    674bea907233ca122bfc58fbf9b828a6932d124b

  • SHA256

    ea33954cd8edcd21ccf3b9a908d1447377af6e72307cecf1dc429500b64af41c

  • SHA512

    ac3023df1ad2cbce99a768e984a9260a5bb64130379193502a1b1179ee71944ec74411c3d2316bc8e00513a684c3da4761d892178453bafcbd236b26990a2f16

  • SSDEEP

    6144:xhRclwK8QCYXpzDrNazp8PRjqpo1WYuMLcUoWldfIB75x4E3lxm:xhMCqgyZj+o1WY5wU1fIJ5xxm

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 3 IoCs

    Password recovery tool for various email clients

  • Nirsoft 3 IoCs
  • UPX packed file 10 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
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ea33954cd8edcd21ccf3b9a908d1447377af6e72307cecf1dc429500b64af41c.exe
    "C:\Users\Admin\AppData\Local\Temp\ea33954cd8edcd21ccf3b9a908d1447377af6e72307cecf1dc429500b64af41c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1736
    • C:\Users\Admin\AppData\Local\Temp\ea33954cd8edcd21ccf3b9a908d1447377af6e72307cecf1dc429500b64af41c.exe
      C:\Users\Admin\AppData\Local\Temp\ea33954cd8edcd21ccf3b9a908d1447377af6e72307cecf1dc429500b64af41c.exe
      2⤵
      • Suspicious use of SetThreadContext
      • Modifies system certificate store
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:952
      • C:\Users\Admin\AppData\Local\Temp\ea33954cd8edcd21ccf3b9a908d1447377af6e72307cecf1dc429500b64af41c.exe
        /scomma "C:\Users\Admin\AppData\Local\Temp\KQ9LOHkKOj.ini"
        3⤵
          PID:820
        • C:\Users\Admin\AppData\Local\Temp\ea33954cd8edcd21ccf3b9a908d1447377af6e72307cecf1dc429500b64af41c.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\U4QxmTfIt2.ini"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:1724

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\KQ9LOHkKOj.ini

      Filesize

      5B

      MD5

      d1ea279fb5559c020a1b4137dc4de237

      SHA1

      db6f8988af46b56216a6f0daf95ab8c9bdb57400

      SHA256

      fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

      SHA512

      720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

    • memory/820-67-0x00000000004512E0-mapping.dmp

    • memory/820-74-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/820-73-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/820-71-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/820-70-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/820-66-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/952-61-0x0000000000401180-mapping.dmp

    • memory/952-55-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/952-86-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/952-60-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/952-58-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/952-72-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/952-56-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/952-77-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1724-78-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1724-79-0x000000000041C410-mapping.dmp

    • memory/1724-82-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1724-83-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1724-84-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1724-85-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1736-62-0x0000000000310000-0x0000000000314000-memory.dmp

      Filesize

      16KB

    • memory/1736-54-0x0000000075DA1000-0x0000000075DA3000-memory.dmp

      Filesize

      8KB