Analysis

  • max time kernel
    52s
  • max time network
    117s
  • platform
    windows7_x64
  • resource
    win7-20220715-en
  • resource tags

    arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system
  • submitted
    19-07-2022 19:35

General

  • Target

    4fded95fb71c1918c15f2ec21cedad80698fa1bd8e34c01e2f23c90237050226.exe

  • Size

    1.0MB

  • MD5

    669fc906d8becd3d67f3d13317e53334

  • SHA1

    80e9a8fe7084fd5d36ed4b1324ca1532ef5dc0c3

  • SHA256

    4fded95fb71c1918c15f2ec21cedad80698fa1bd8e34c01e2f23c90237050226

  • SHA512

    6b346ccf649d4bd1db953e2509442fdd2da21e182e237d43b116ffcb8af64b2403ca43a0f844f1a2fcc545a5fac6aba2ff144808dee11130af367e672275d2be

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 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.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4fded95fb71c1918c15f2ec21cedad80698fa1bd8e34c01e2f23c90237050226.exe
    "C:\Users\Admin\AppData\Local\Temp\4fded95fb71c1918c15f2ec21cedad80698fa1bd8e34c01e2f23c90237050226.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1044
    • C:\Users\Admin\AppData\Local\Temp\4fded95fb71c1918c15f2ec21cedad80698fa1bd8e34c01e2f23c90237050226.exe
      "C:\Users\Admin\AppData\Local\Temp\4fded95fb71c1918c15f2ec21cedad80698fa1bd8e34c01e2f23c90237050226.exe"
      2⤵
        PID:1960
      • C:\Users\Admin\AppData\Local\Temp\4fded95fb71c1918c15f2ec21cedad80698fa1bd8e34c01e2f23c90237050226.exe
        "C:\Users\Admin\AppData\Local\Temp\4fded95fb71c1918c15f2ec21cedad80698fa1bd8e34c01e2f23c90237050226.exe"
        2⤵
          PID:1720
        • C:\Users\Admin\AppData\Local\Temp\4fded95fb71c1918c15f2ec21cedad80698fa1bd8e34c01e2f23c90237050226.exe
          "C:\Users\Admin\AppData\Local\Temp\4fded95fb71c1918c15f2ec21cedad80698fa1bd8e34c01e2f23c90237050226.exe"
          2⤵
            PID:1072
          • C:\Users\Admin\AppData\Local\Temp\4fded95fb71c1918c15f2ec21cedad80698fa1bd8e34c01e2f23c90237050226.exe
            "C:\Users\Admin\AppData\Local\Temp\4fded95fb71c1918c15f2ec21cedad80698fa1bd8e34c01e2f23c90237050226.exe"
            2⤵
            • Suspicious use of SetThreadContext
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:1532
            • C:\Users\Admin\AppData\Local\Temp\4fded95fb71c1918c15f2ec21cedad80698fa1bd8e34c01e2f23c90237050226.exe
              /scomma "C:\Users\Admin\AppData\Local\Temp\NjsEVeXGa6.ini"
              3⤵
                PID:1660
              • C:\Users\Admin\AppData\Local\Temp\4fded95fb71c1918c15f2ec21cedad80698fa1bd8e34c01e2f23c90237050226.exe
                /scomma "C:\Users\Admin\AppData\Local\Temp\YxcwBLrHGz.ini"
                3⤵
                • Accesses Microsoft Outlook accounts
                PID:1548

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • memory/1044-65-0x00000000741A0000-0x000000007474B000-memory.dmp

            Filesize

            5.7MB

          • memory/1044-55-0x00000000741A0000-0x000000007474B000-memory.dmp

            Filesize

            5.7MB

          • memory/1044-54-0x00000000752D1000-0x00000000752D3000-memory.dmp

            Filesize

            8KB

          • memory/1532-66-0x0000000000400000-0x0000000000448000-memory.dmp

            Filesize

            288KB

          • memory/1532-59-0x0000000000400000-0x0000000000448000-memory.dmp

            Filesize

            288KB

          • memory/1532-60-0x0000000000400000-0x0000000000448000-memory.dmp

            Filesize

            288KB

          • memory/1532-56-0x0000000000400000-0x0000000000448000-memory.dmp

            Filesize

            288KB

          • memory/1532-74-0x0000000000400000-0x0000000000448000-memory.dmp

            Filesize

            288KB

          • memory/1548-67-0x0000000000400000-0x000000000041F000-memory.dmp

            Filesize

            124KB

          • memory/1548-71-0x0000000000400000-0x000000000041F000-memory.dmp

            Filesize

            124KB

          • memory/1548-72-0x0000000000400000-0x000000000041F000-memory.dmp

            Filesize

            124KB

          • memory/1548-73-0x0000000000400000-0x000000000041F000-memory.dmp

            Filesize

            124KB

          • memory/1548-75-0x0000000000400000-0x000000000041F000-memory.dmp

            Filesize

            124KB