Analysis

  • max time kernel
    149s
  • max time network
    151s
  • 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, 00:32

General

  • Target

    1f35a53d85676d42b288490df1629bcf32b66a883373238acfd891f1c5915273.exe

  • Size

    414KB

  • MD5

    8ed6fc461fb1cad41bbbe997fc33524b

  • SHA1

    c8ab52a0ac4be3b5a87e029e4d19fae59318069e

  • SHA256

    1f35a53d85676d42b288490df1629bcf32b66a883373238acfd891f1c5915273

  • SHA512

    9e18a5f23c9f27c8798b136c9d88ae2d918643623bf96c4c9f5b85aa85cc2bd26cb974b8f8376e34cc8cd8f13229a99921defb963456d7129c87fc74868970b7

  • SSDEEP

    6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4:gtRfJcNYFNm8UhlZGse

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\1f35a53d85676d42b288490df1629bcf32b66a883373238acfd891f1c5915273.exe
    "C:\Users\Admin\AppData\Local\Temp\1f35a53d85676d42b288490df1629bcf32b66a883373238acfd891f1c5915273.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2280
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\yokty.exe "C:\Users\Admin\AppData\Local\Temp\1f35a53d85676d42b288490df1629bcf32b66a883373238acfd891f1c5915273.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:3436
      • 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:2132
      • C:\Users\Admin\AppData\Local\Temp\yokty.exe
        C:\Users\Admin\AppData\Local\Temp\\yokty.exe "C:\Users\Admin\AppData\Local\Temp\1f35a53d85676d42b288490df1629bcf32b66a883373238acfd891f1c5915273.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:1632
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\Program Files\atdmw\yqamp.dll",Verify C:\Users\Admin\AppData\Local\Temp\yokty.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:3428

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          414KB

          MD5

          3c50782070f5ccad175c48a83abc605b

          SHA1

          e13715edc0e50a552bd8c30bc197ba9c000fb450

          SHA256

          db9f3c81166c2e24929b31a55da6e65b70e72e0a44e0cb0b068b26635669260b

          SHA512

          cb98ad7258c503f20a088fff8ef26c8ae51276070f262557494e5fb7aaeb1e807411fc20456e9bc8691d66937b656ca54589fa30122174e4a49ad30f34b7fe61

        • \??\c:\Program Files\atdmw\yqamp.dll

          Filesize

          228KB

          MD5

          b6a726eafb7e3265201e015195eaed40

          SHA1

          5bedaca3b024092c4bc68c7f2184bee7ce229bff

          SHA256

          08e9ea35b7556bc84f5a18cdb65e362d8d907256e3b3024eb2434f1998def93a

          SHA512

          08773e331d3652ce99ba54f29adbf67ed95bb71263746744746cae50123a8cfa4980958d8ba523ae8485f903a2f71ca376e0ea743d014c0f7ca620ac952ba60e

        • memory/1632-7-0x0000000000400000-0x0000000000464000-memory.dmp

          Filesize

          400KB

        • memory/2280-0-0x0000000000400000-0x0000000000464000-memory.dmp

          Filesize

          400KB

        • memory/2280-2-0x0000000000400000-0x0000000000464000-memory.dmp

          Filesize

          400KB

        • memory/3428-10-0x0000000010000000-0x0000000010080000-memory.dmp

          Filesize

          512KB

        • memory/3428-11-0x0000000010000000-0x0000000010080000-memory.dmp

          Filesize

          512KB

        • memory/3428-13-0x0000000010000000-0x0000000010080000-memory.dmp

          Filesize

          512KB