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Analysis

  • max time kernel
    42s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    26/11/2022, 03:58

General

  • Target

    6d516cacdafd6aba0cb19db4b66b1fce73d3079d6c0775d14b463a2ef2fd27c4.exe

  • Size

    1.1MB

  • MD5

    fd284de48fceb1580a3a4f69e382cdb4

  • SHA1

    dee73f2265bac5427da3920e49a8bf5f1f3e7d93

  • SHA256

    6d516cacdafd6aba0cb19db4b66b1fce73d3079d6c0775d14b463a2ef2fd27c4

  • SHA512

    9a87fb545b73ff818d0b45e998a12a8a9e2ed0eb8400e029bbc65c19f48c324050214ae5a55458609a24f4a114e2065b64984eb9ae5c5262f855f508326cdb79

  • SSDEEP

    12288:/aWzgMg7v3qnCiMErQohh0F4CCJ8lny/Qo6oImr69oGE15jSsFZyoopSqM14C:iaHMv6Corjqny/Qo6DcsoRNFZyomW4C

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 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6d516cacdafd6aba0cb19db4b66b1fce73d3079d6c0775d14b463a2ef2fd27c4.exe
    "C:\Users\Admin\AppData\Local\Temp\6d516cacdafd6aba0cb19db4b66b1fce73d3079d6c0775d14b463a2ef2fd27c4.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1480
    • C:\Users\Admin\AppData\Local\Temp\6d516cacdafd6aba0cb19db4b66b1fce73d3079d6c0775d14b463a2ef2fd27c4.exe
      "C:\Users\Admin\AppData\Local\Temp\6d516cacdafd6aba0cb19db4b66b1fce73d3079d6c0775d14b463a2ef2fd27c4.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:304
      • C:\Users\Admin\AppData\Local\Temp\6d516cacdafd6aba0cb19db4b66b1fce73d3079d6c0775d14b463a2ef2fd27c4.exe
        /scomma "C:\Users\Admin\AppData\Local\Temp\qjjA8OPRlS.ini"
        3⤵
          PID:1116
        • C:\Users\Admin\AppData\Local\Temp\6d516cacdafd6aba0cb19db4b66b1fce73d3079d6c0775d14b463a2ef2fd27c4.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\c65nsMRVdi.ini"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:2028

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\qjjA8OPRlS.ini

      Filesize

      5B

      MD5

      d1ea279fb5559c020a1b4137dc4de237

      SHA1

      db6f8988af46b56216a6f0daf95ab8c9bdb57400

      SHA256

      fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

      SHA512

      720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

    • memory/304-55-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/304-56-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/304-58-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/304-60-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/304-82-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/304-81-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1116-71-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/1116-70-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/1116-72-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/1116-69-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/1116-65-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/1480-54-0x0000000076201000-0x0000000076203000-memory.dmp

      Filesize

      8KB

    • memory/2028-74-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2028-78-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2028-79-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2028-80-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB