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Analysis

  • max time kernel
    24s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    29/11/2022, 04:37

General

  • Target

    9b933a1465ef307beccd52d53b5f087862a32997199d2f475a0856baea1470be.exe

  • Size

    357KB

  • MD5

    87745db6b706ee4ac5900838c661e1d3

  • SHA1

    c6dd4ce078b86f216dc50c6107b116fea55dcf48

  • SHA256

    9b933a1465ef307beccd52d53b5f087862a32997199d2f475a0856baea1470be

  • SHA512

    0ae59abeb0be99519dcfbddce89f19e367dd80c84259fb0548e88d2ee3380d9cbcaf29448555936fb487d2d30e84382dc334b7aba40ac72c289469e45cbf7289

  • SSDEEP

    6144:qowYxgI2hA+Uk2CNxcenTLt1ukosGo4M52QJTbGVzxNX3d1vpTMK3fmlj0+B2Vfe:qowYxL2urqxNvDdl5JQxNXnxTjx+B2Vf

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
  • 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 use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9b933a1465ef307beccd52d53b5f087862a32997199d2f475a0856baea1470be.exe
    "C:\Users\Admin\AppData\Local\Temp\9b933a1465ef307beccd52d53b5f087862a32997199d2f475a0856baea1470be.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:748
    • C:\Users\Admin\AppData\Local\Temp\9b933a1465ef307beccd52d53b5f087862a32997199d2f475a0856baea1470be.exe
      C:\Users\Admin\AppData\Local\Temp\9b933a1465ef307beccd52d53b5f087862a32997199d2f475a0856baea1470be.exe
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1160
      • C:\Users\Admin\AppData\Local\Temp\9b933a1465ef307beccd52d53b5f087862a32997199d2f475a0856baea1470be.exe
        /scomma "C:\Users\Admin\AppData\Local\Temp\J78IoAd3yd.ini"
        3⤵
          PID:916
        • C:\Users\Admin\AppData\Local\Temp\9b933a1465ef307beccd52d53b5f087862a32997199d2f475a0856baea1470be.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\0qCRuQrWoZ.ini"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:1948

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\J78IoAd3yd.ini

      Filesize

      5B

      MD5

      d1ea279fb5559c020a1b4137dc4de237

      SHA1

      db6f8988af46b56216a6f0daf95ab8c9bdb57400

      SHA256

      fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

      SHA512

      720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

    • memory/916-71-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/916-73-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/916-72-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/916-74-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/916-67-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/916-70-0x0000000075B11000-0x0000000075B13000-memory.dmp

      Filesize

      8KB

    • memory/1160-54-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1160-57-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1160-61-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1160-55-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1948-77-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1948-81-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1948-82-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1948-83-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB