Analysis

  • max time kernel
    127s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    24-09-2024 16:48

General

  • Target

    0a53456ad2ce6a20c459e38a8fb0be2751c7543a0d8a47f52bb48a8b6d24d335.exe

  • Size

    158KB

  • MD5

    d0a55dda2e691dbb7eedcd02cc7eaffa

  • SHA1

    37433d28c8f89e0f3b63e145d592e86e9da9b22f

  • SHA256

    0a53456ad2ce6a20c459e38a8fb0be2751c7543a0d8a47f52bb48a8b6d24d335

  • SHA512

    de5975c1c76799649b917b5e43c681ea2aff06813f43d363d4dc2ec8c99d33ba17026cb07a26931e6f637e26add9090be0eccc95f753f625461c75fe2b07327a

  • SSDEEP

    3072:wbzmH+0OoCthfbEFtbcfjF45gjryKKqH6JY2doszEmQotEPPcfPzdO8Y:wbzme0ODhTEPgnjuIJzo+PPcfPzQ8

Malware Config

Extracted

Family

arrowrat

Botnet

Client

C2

26.137.109.175:1337

Mutex

pqjvqGUKv

Signatures

  • ArrowRat

    Remote access tool with various capabilities first seen in late 2021.

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 11 IoCs
  • Suspicious behavior: EnumeratesProcesses 22 IoCs
  • Suspicious use of AdjustPrivilegeToken 12 IoCs
  • Suspicious use of FindShellTrayWindow 27 IoCs
  • Suspicious use of SendNotifyMessage 16 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\0a53456ad2ce6a20c459e38a8fb0be2751c7543a0d8a47f52bb48a8b6d24d335.exe
    "C:\Users\Admin\AppData\Local\Temp\0a53456ad2ce6a20c459e38a8fb0be2751c7543a0d8a47f52bb48a8b6d24d335.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2884
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      2⤵
      • Boot or Logon Autostart Execution: Active Setup
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:3020
      • C:\Windows\system32\ctfmon.exe
        ctfmon.exe
        3⤵
          PID:2808
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 26.137.109.175 1337 pqjvqGUKv
        2⤵
          PID:2212
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 26.137.109.175 1337 pqjvqGUKv
          2⤵
            PID:2720
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 26.137.109.175 1337 pqjvqGUKv
            2⤵
              PID:2856
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 26.137.109.175 1337 pqjvqGUKv
              2⤵
                PID:2628
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
                "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 26.137.109.175 1337 pqjvqGUKv
                2⤵
                  PID:2624
                • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
                  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 26.137.109.175 1337 pqjvqGUKv
                  2⤵
                    PID:2740
                  • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
                    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 26.137.109.175 1337 pqjvqGUKv
                    2⤵
                      PID:2844
                    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
                      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 26.137.109.175 1337 pqjvqGUKv
                      2⤵
                        PID:2776
                      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
                        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 26.137.109.175 1337 pqjvqGUKv
                        2⤵
                          PID:2648
                        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
                          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 26.137.109.175 1337 pqjvqGUKv
                          2⤵
                            PID:2716
                          • C:\Windows\System32\ComputerDefaults.exe
                            "C:\Windows\System32\ComputerDefaults.exe"
                            2⤵
                              PID:2660

                          Network

                          MITRE ATT&CK Enterprise v15

                          Replay Monitor

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                          Downloads

                          • memory/2884-0-0x000007FEF5D93000-0x000007FEF5D94000-memory.dmp

                            Filesize

                            4KB

                          • memory/2884-1-0x00000000011D0000-0x00000000011FE000-memory.dmp

                            Filesize

                            184KB

                          • memory/2884-3-0x000007FEF5D90000-0x000007FEF677C000-memory.dmp

                            Filesize

                            9.9MB

                          • memory/2884-4-0x000007FEF5D93000-0x000007FEF5D94000-memory.dmp

                            Filesize

                            4KB

                          • memory/2884-5-0x000007FEF5D90000-0x000007FEF677C000-memory.dmp

                            Filesize

                            9.9MB

                          • memory/3020-9-0x0000000003D70000-0x0000000003D80000-memory.dmp

                            Filesize

                            64KB