Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-06-2024 15:33

General

  • Target

    c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.exe

  • Size

    407KB

  • MD5

    2701aca13e64655f8e63d894b0bb53f4

  • SHA1

    2efd3f99b5ac3bcfe1915513b5549dc04bac854f

  • SHA256

    c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b

  • SHA512

    62f9b9677a11984f6089bf567d2e15fe57cc4cc061b16cfff2be2e93eaa5acd93aef2e26e4a648eff53e99161d29d2aa0522452d92b86ed834d724112c522ed4

  • SSDEEP

    6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4u:gtRfJcNYFNm8UhlZGseu

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 2 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
  • 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\c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.exe
    "C:\Users\Admin\AppData\Local\Temp\c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1780
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\wbbxn.exe "C:\Users\Admin\AppData\Local\Temp\c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4468
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • Runs ping.exe
        PID:1884
      • C:\Users\Admin\AppData\Local\Temp\wbbxn.exe
        C:\Users\Admin\AppData\Local\Temp\\wbbxn.exe "C:\Users\Admin\AppData\Local\Temp\c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1580
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\Program Files\azitmh\ymxte.dll",Verify C:\Users\Admin\AppData\Local\Temp\wbbxn.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
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2096

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    407KB

    MD5

    bed3a3ed7cb17bb55c8a5e91baba3ed9

    SHA1

    2ad7a9805f77a771b8b9f744b63318244919dcbd

    SHA256

    03edb86c05274d600222036585d2461ec6b7f1561006808e6f973c47446a9683

    SHA512

    56532cab5bcfd341861ea8e823bd4930f8e846dfd3ad30a4e8428414acd0479151459ec1359174dd852d2886c0571a79bf4ee4ca1d2835a796b30a1ee0397813

  • \??\c:\Program Files\azitmh\ymxte.dll

    Filesize

    228KB

    MD5

    17fb87ef8557e8d7e1521a158fa08c51

    SHA1

    1b0f1e567f06d63df4c65aa3abb5689acdbf7923

    SHA256

    207042972d469c69dd56ee83fbd90dfb1be3a871dde1128a9620ce1ea6c57eda

    SHA512

    ca176c450644e78f0866de161b4dd0cffab4bbf822c0268b4b76f95166c31fcd718bf1565b5466e4a809a6f08998ce41c3c4a8786ced45a396d8525427700116

  • memory/1580-6-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/1580-8-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/1780-0-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/1780-2-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/2096-11-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/2096-13-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/2096-14-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB