Analysis

  • max time kernel
    276s
  • max time network
    289s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 18:55

General

  • Target

    6fdf1fe343cf7d18b43ea736ce78f63283ff53913dfff32c07b6806c456fc456.exe

  • Size

    68KB

  • MD5

    1ddadc8836c58e6cf1e0520d01cae656

  • SHA1

    b4a51e1f8dd03bf4309e6982de7bc2d3ac1a32c9

  • SHA256

    6fdf1fe343cf7d18b43ea736ce78f63283ff53913dfff32c07b6806c456fc456

  • SHA512

    656034a1280f3788a52ffd6bc7d110e7ad4241dcf18eaacdf50ff47e30cc0187a0c75741fdc5beef17b07a15cfb9ae7b1c4a64877521702ed0ea5bde35e1f6b4

  • SSDEEP

    1536:OjcznvDjY/u7RLw5gbNsGKRlCY19TO21EUghNHzrztTZd4e:OjIvDjnxrno0Y1I21EUq/B1

Score
10/10

Malware Config

Signatures

  • Modifies firewall policy service 2 TTPs 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6fdf1fe343cf7d18b43ea736ce78f63283ff53913dfff32c07b6806c456fc456.exe
    "C:\Users\Admin\AppData\Local\Temp\6fdf1fe343cf7d18b43ea736ce78f63283ff53913dfff32c07b6806c456fc456.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4596
    • C:\Users\Admin\AppData\Local\Temp\6fdf1fe343cf7d18b43ea736ce78f63283ff53913dfff32c07b6806c456fc456.exe
      C:\Users\Admin\AppData\Local\Temp\6fdf1fe343cf7d18b43ea736ce78f63283ff53913dfff32c07b6806c456fc456.exe
      2⤵
      • Modifies firewall policy service
      • Checks computer location settings
      • Adds Run key to start application
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:4724
      • C:\Users\Admin\Microsoft-Driver-1-82-8475-5627-5645\winrsvn.exe
        "C:\Users\Admin\Microsoft-Driver-1-82-8475-5627-5645\winrsvn.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:1756
        • C:\Users\Admin\Microsoft-Driver-1-82-8475-5627-5645\winrsvn.exe
          C:\Users\Admin\Microsoft-Driver-1-82-8475-5627-5645\winrsvn.exe
          4⤵
            PID:1332
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 1756 -s 288
            4⤵
            • Program crash
            PID:3080
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1756 -ip 1756
      1⤵
        PID:2108

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\Users\Admin\Microsoft-Driver-1-82-8475-5627-5645\winrsvn.exe

        Filesize

        68KB

        MD5

        1ddadc8836c58e6cf1e0520d01cae656

        SHA1

        b4a51e1f8dd03bf4309e6982de7bc2d3ac1a32c9

        SHA256

        6fdf1fe343cf7d18b43ea736ce78f63283ff53913dfff32c07b6806c456fc456

        SHA512

        656034a1280f3788a52ffd6bc7d110e7ad4241dcf18eaacdf50ff47e30cc0187a0c75741fdc5beef17b07a15cfb9ae7b1c4a64877521702ed0ea5bde35e1f6b4

      • C:\Users\Admin\Microsoft-Driver-1-82-8475-5627-5645\winrsvn.exe

        Filesize

        68KB

        MD5

        1ddadc8836c58e6cf1e0520d01cae656

        SHA1

        b4a51e1f8dd03bf4309e6982de7bc2d3ac1a32c9

        SHA256

        6fdf1fe343cf7d18b43ea736ce78f63283ff53913dfff32c07b6806c456fc456

        SHA512

        656034a1280f3788a52ffd6bc7d110e7ad4241dcf18eaacdf50ff47e30cc0187a0c75741fdc5beef17b07a15cfb9ae7b1c4a64877521702ed0ea5bde35e1f6b4

      • memory/1756-148-0x0000000000400000-0x0000000000428000-memory.dmp

        Filesize

        160KB

      • memory/1756-147-0x0000000000400000-0x0000000000428000-memory.dmp

        Filesize

        160KB

      • memory/1756-144-0x0000000000000000-mapping.dmp

      • memory/4596-141-0x0000000000400000-0x0000000000428000-memory.dmp

        Filesize

        160KB

      • memory/4596-132-0x0000000000400000-0x0000000000428000-memory.dmp

        Filesize

        160KB

      • memory/4724-138-0x0000000000400000-0x000000000040B000-memory.dmp

        Filesize

        44KB

      • memory/4724-142-0x0000000000400000-0x000000000040B000-memory.dmp

        Filesize

        44KB

      • memory/4724-143-0x0000000000400000-0x000000000040B000-memory.dmp

        Filesize

        44KB

      • memory/4724-137-0x0000000000400000-0x000000000040B000-memory.dmp

        Filesize

        44KB

      • memory/4724-136-0x0000000000400000-0x000000000040B000-memory.dmp

        Filesize

        44KB

      • memory/4724-135-0x0000000000400000-0x000000000040B000-memory.dmp

        Filesize

        44KB

      • memory/4724-133-0x0000000000000000-mapping.dmp

      • memory/4724-134-0x0000000000400000-0x000000000040B000-memory.dmp

        Filesize

        44KB