Analysis

  • max time kernel
    45s
  • max time network
    66s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    29-11-2022 03:30

General

  • Target

    ab17327ee4a1c40b4df98948d69e66949d77619d9fb912265a91fa0cac15e999.exe

  • Size

    906KB

  • MD5

    a2404c8be4795675d7f4a099bc1f7f23

  • SHA1

    f62d28b712c4f302c8b6fca67025bc822322790c

  • SHA256

    ab17327ee4a1c40b4df98948d69e66949d77619d9fb912265a91fa0cac15e999

  • SHA512

    bfd2f510ce6f549d74ae9b374b077027861f837e616d71c5a9ac93b2795af6b72e2bae265d4cdc4beab1076c4d35a4bffa9a9272d741f5399b70f3e1175e5188

  • SSDEEP

    24576:YM4Yhyf7AyLs++JOorZg44nN5fNH4D0zkmcr:SYUA+2cc

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 3 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 5 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 8 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • 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 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ab17327ee4a1c40b4df98948d69e66949d77619d9fb912265a91fa0cac15e999.exe
    "C:\Users\Admin\AppData\Local\Temp\ab17327ee4a1c40b4df98948d69e66949d77619d9fb912265a91fa0cac15e999.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1240
    • C:\Users\Admin\AppData\Local\Temp\ab17327ee4a1c40b4df98948d69e66949d77619d9fb912265a91fa0cac15e999.exe
      C:\Users\Admin\AppData\Local\Temp\ab17327ee4a1c40b4df98948d69e66949d77619d9fb912265a91fa0cac15e999.exe
      2⤵
      • Suspicious use of SetThreadContext
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1644
      • C:\Users\Admin\AppData\Local\Temp\ab17327ee4a1c40b4df98948d69e66949d77619d9fb912265a91fa0cac15e999.exe
        "C:\Users\Admin\AppData\Local\Temp\ab17327ee4a1c40b4df98948d69e66949d77619d9fb912265a91fa0cac15e999.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1424
        • C:\Users\Admin\AppData\Local\Temp\ab17327ee4a1c40b4df98948d69e66949d77619d9fb912265a91fa0cac15e999.exe
          "C:\Users\Admin\AppData\Local\Temp\ab17327ee4a1c40b4df98948d69e66949d77619d9fb912265a91fa0cac15e999.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data.dmp
          4⤵
            PID:288
          • C:\Users\Admin\AppData\Local\Temp\ab17327ee4a1c40b4df98948d69e66949d77619d9fb912265a91fa0cac15e999.exe
            "C:\Users\Admin\AppData\Local\Temp\ab17327ee4a1c40b4df98948d69e66949d77619d9fb912265a91fa0cac15e999.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data2.dmp
            4⤵
            • Accesses Microsoft Outlook accounts
            PID:1812
          • C:\Users\Admin\AppData\Local\Temp\ab17327ee4a1c40b4df98948d69e66949d77619d9fb912265a91fa0cac15e999.exe
            "C:\Users\Admin\AppData\Local\Temp\ab17327ee4a1c40b4df98948d69e66949d77619d9fb912265a91fa0cac15e999.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data1.dmp
            4⤵
              PID:1040

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/288-103-0x0000000000400000-0x0000000000454000-memory.dmp

        Filesize

        336KB

      • memory/288-101-0x0000000000400000-0x0000000000454000-memory.dmp

        Filesize

        336KB

      • memory/288-93-0x0000000000400000-0x0000000000454000-memory.dmp

        Filesize

        336KB

      • memory/288-86-0x0000000000400000-0x0000000000454000-memory.dmp

        Filesize

        336KB

      • memory/288-83-0x0000000000400000-0x0000000000454000-memory.dmp

        Filesize

        336KB

      • memory/1240-54-0x0000000075931000-0x0000000075933000-memory.dmp

        Filesize

        8KB

      • memory/1240-55-0x0000000074770000-0x0000000074D1B000-memory.dmp

        Filesize

        5.7MB

      • memory/1240-56-0x0000000074770000-0x0000000074D1B000-memory.dmp

        Filesize

        5.7MB

      • memory/1240-65-0x0000000074770000-0x0000000074D1B000-memory.dmp

        Filesize

        5.7MB

      • memory/1424-80-0x0000000000400000-0x000000000045F000-memory.dmp

        Filesize

        380KB

      • memory/1424-85-0x0000000000400000-0x000000000045F000-memory.dmp

        Filesize

        380KB

      • memory/1424-72-0x0000000000400000-0x000000000045F000-memory.dmp

        Filesize

        380KB

      • memory/1424-75-0x0000000000400000-0x000000000045F000-memory.dmp

        Filesize

        380KB

      • memory/1424-74-0x0000000000400000-0x000000000045F000-memory.dmp

        Filesize

        380KB

      • memory/1424-73-0x0000000000400000-0x000000000045F000-memory.dmp

        Filesize

        380KB

      • memory/1424-76-0x0000000000400000-0x000000000045F000-memory.dmp

        Filesize

        380KB

      • memory/1424-78-0x0000000000400000-0x000000000045F000-memory.dmp

        Filesize

        380KB

      • memory/1424-70-0x0000000000400000-0x000000000045F000-memory.dmp

        Filesize

        380KB

      • memory/1424-81-0x0000000000400000-0x000000000045F000-memory.dmp

        Filesize

        380KB

      • memory/1424-96-0x0000000000400000-0x000000000045F000-memory.dmp

        Filesize

        380KB

      • memory/1424-69-0x0000000000400000-0x000000000045F000-memory.dmp

        Filesize

        380KB

      • memory/1644-58-0x0000000000400000-0x0000000000470000-memory.dmp

        Filesize

        448KB

      • memory/1644-62-0x0000000000400000-0x0000000000470000-memory.dmp

        Filesize

        448KB

      • memory/1644-82-0x0000000000401000-0x0000000000414000-memory.dmp

        Filesize

        76KB

      • memory/1644-60-0x0000000000400000-0x0000000000470000-memory.dmp

        Filesize

        448KB

      • memory/1644-57-0x0000000000400000-0x0000000000470000-memory.dmp

        Filesize

        448KB

      • memory/1644-66-0x0000000000400000-0x0000000000470000-memory.dmp

        Filesize

        448KB

      • memory/1812-89-0x0000000000400000-0x000000000041F000-memory.dmp

        Filesize

        124KB

      • memory/1812-98-0x0000000000400000-0x000000000041F000-memory.dmp

        Filesize

        124KB

      • memory/1812-100-0x0000000000400000-0x000000000041F000-memory.dmp

        Filesize

        124KB

      • memory/1812-92-0x0000000000400000-0x000000000041F000-memory.dmp

        Filesize

        124KB

      • memory/1812-102-0x0000000000400000-0x000000000041F000-memory.dmp

        Filesize

        124KB

      • memory/1812-104-0x0000000000400000-0x000000000041F000-memory.dmp

        Filesize

        124KB