Analysis

  • max time kernel
    149s
  • max time network
    136s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-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 8 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 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 12 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:832
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ukoya.exe "C:\Users\Admin\AppData\Local\Temp\55d72e541ff5d50ada69084e6a7746784caf8569e7e1576a71d3d03ea335ca5c.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:3608
      • 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:3716
      • C:\Users\Admin\AppData\Local\Temp\ukoya.exe
        C:\Users\Admin\AppData\Local\Temp\\ukoya.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:3068
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\Program Files\nipyz\pzvmf.dll",Verify C:\Users\Admin\AppData\Local\Temp\ukoya.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:4480

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\ukoya.exe

          Filesize

          415KB

          MD5

          cc8d46b403a9b940be027b45189e4636

          SHA1

          3f95905e6b2420618156099871868529ddfc798c

          SHA256

          71c02316defde871368d1084d0fa0eb03d7a84ffe697ff9fe18d460b88f78437

          SHA512

          a7ca7d232ef05f1ffea10e10e3396b96cebaf7cdb4b70fb57950719d21ddbcb0311ec3d6f37643027a46c68d44ebad3e39394bf32bb231bb31c460be6246c147

        • \??\c:\Program Files\nipyz\pzvmf.dll

          Filesize

          228KB

          MD5

          935ca88d0dd1afd784a372e7dd3c6489

          SHA1

          8f60743a13967284a53786edea827b0f6f37aa65

          SHA256

          29bd7931118b13a2aed8c4888623b2d419fc70f01665fba405c704db5e46bd3e

          SHA512

          667ae817c2f598e31e4a2609591a1f561ca506f47dfc87f2e416654f2fcc192f9bafbd393458c9c1b7e87ed40ba06ccd8b5e634ed9ddf12a1b857ecb22038cb5

        • memory/832-0-0x0000000000400000-0x0000000000464000-memory.dmp

          Filesize

          400KB

        • memory/832-2-0x0000000000400000-0x0000000000464000-memory.dmp

          Filesize

          400KB

        • memory/3068-7-0x0000000000400000-0x0000000000464000-memory.dmp

          Filesize

          400KB

        • memory/4480-10-0x0000000010000000-0x0000000010080000-memory.dmp

          Filesize

          512KB

        • memory/4480-11-0x0000000010000000-0x0000000010080000-memory.dmp

          Filesize

          512KB

        • memory/4480-13-0x0000000010000000-0x0000000010080000-memory.dmp

          Filesize

          512KB