Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    16/10/2024, 00:29

General

  • Target

    55d72e541ff5d50ada69084e6a7746784caf8569e7e1576a71d3d03ea335ca5c.exe

  • Size

    414KB

  • MD5

    aea5688722a46cecd76528b7796ec87d

  • SHA1

    d03bf13043d96747e4b8dc01d05384e9fdbbbbc3

  • SHA256

    55d72e541ff5d50ada69084e6a7746784caf8569e7e1576a71d3d03ea335ca5c

  • SHA512

    2b3520efbd81bcfdd317c8f435e8dd0ab905169f581cdcf83befc5a9a1d145b3e31c799e3342a6bc7149af7a2262d2728efb8b1d39edec09937f9eec6563f124

  • SSDEEP

    6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4X:gtRfJcNYFNm8UhlZGseX

Malware Config

Signatures

  • Blocklisted process makes network request 10 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\55d72e541ff5d50ada69084e6a7746784caf8569e7e1576a71d3d03ea335ca5c.exe
    "C:\Users\Admin\AppData\Local\Temp\55d72e541ff5d50ada69084e6a7746784caf8569e7e1576a71d3d03ea335ca5c.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1712
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\anmob.exe "C:\Users\Admin\AppData\Local\Temp\55d72e541ff5d50ada69084e6a7746784caf8569e7e1576a71d3d03ea335ca5c.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:2080
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:2616
      • C:\Users\Admin\AppData\Local\Temp\anmob.exe
        C:\Users\Admin\AppData\Local\Temp\\anmob.exe "C:\Users\Admin\AppData\Local\Temp\55d72e541ff5d50ada69084e6a7746784caf8569e7e1576a71d3d03ea335ca5c.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2620
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\Program Files\frpaj\ewkyxj.dll",Verify C:\Users\Admin\AppData\Local\Temp\anmob.exe
          4⤵
          • Blocklisted process makes network request
          • Loads dropped DLL
          • Adds Run key to start application
          • Enumerates connected drives
          • Writes to the Master Boot Record (MBR)
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • System Location Discovery: System Language Discovery
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2792

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • \??\c:\Program Files\frpaj\ewkyxj.dll

          Filesize

          228KB

          MD5

          faebb7c95db97cd7a697ab33c6ec2dc6

          SHA1

          d429f569271ba5f85713c75e1bd1661958e14b19

          SHA256

          edf9e93527bf024225737e0d4ddd57d5c8d541cc4afae4b6cad6116085c0debe

          SHA512

          2427e3a6d085c012a2af912bedf894794f75b3b0e1fec519e06f0ed01ad36c4eed3b88ac5f05509182b92a919c32bf3c284e7a4a60e06051db90813fde124bce

        • \Users\Admin\AppData\Local\Temp\anmob.exe

          Filesize

          414KB

          MD5

          41c3f3b90385ec449e85762026beb663

          SHA1

          a5d11518cee04c5f071b940e2e4e92c449bf0ffc

          SHA256

          758fda348ba4f80286c953b47f5a534508621f58ecded9b8f9b3b49730a9fafb

          SHA512

          5031fb532fb6e269766897fa9428aec3c125b7191af3ccc23e8d3837c55c8a8146f355b76cc26eaf4e60f29369a0b7c8b57be87e6fe14d43e7ea33ed7d44d3ba

        • memory/1712-0-0x0000000000400000-0x0000000000464000-memory.dmp

          Filesize

          400KB

        • memory/1712-2-0x0000000000400000-0x0000000000464000-memory.dmp

          Filesize

          400KB

        • memory/2080-7-0x0000000000540000-0x00000000005A4000-memory.dmp

          Filesize

          400KB

        • memory/2080-9-0x0000000000540000-0x00000000005A4000-memory.dmp

          Filesize

          400KB

        • memory/2620-8-0x0000000000400000-0x0000000000464000-memory.dmp

          Filesize

          400KB

        • memory/2620-11-0x0000000000400000-0x0000000000464000-memory.dmp

          Filesize

          400KB

        • memory/2792-18-0x0000000010000000-0x0000000010080000-memory.dmp

          Filesize

          512KB

        • memory/2792-17-0x0000000010000000-0x0000000010080000-memory.dmp

          Filesize

          512KB

        • memory/2792-19-0x0000000010000000-0x0000000010080000-memory.dmp

          Filesize

          512KB

        • memory/2792-21-0x0000000010000000-0x0000000010080000-memory.dmp

          Filesize

          512KB