Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/01/2024, 19:13

General

  • Target

    6dd05e374c550f42a7b400753a1a5a40.exe

  • Size

    255KB

  • MD5

    6dd05e374c550f42a7b400753a1a5a40

  • SHA1

    b266fcb55bb01402f373a751a4d9e2018f489fb3

  • SHA256

    040b879f7816d317d02b442f12abaa24d75362340878cdfbdce01c9b2c4eed10

  • SHA512

    638f143ea51eb88f96475b5fa6c2d0f09e0f9b48c32cf7db1296f210bc0f4ebff2189cb93965171b2c761f10fd43a30c5b2e078e2a9f1b10c3b34fcffea645f2

  • SSDEEP

    3072:LZ49oLUdKthw+vJ/Ya5ZT1oTwZTu0NQwPHNE0paqah8JAWzvtijyW2EM2DIcgU:LZHlTW0ZTyuYwPtuCxTvEM2DIG

Malware Config

Extracted

Family

metasploit

Version

encoder/call4_dword_xor

Signatures

  • MetaSploit

    Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.

  • Modifies firewall policy service 2 TTPs 8 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • UPX packed file 9 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Maps connected drives based on registry 3 TTPs 4 IoCs

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

  • Drops file in System32 directory 5 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3496
      • C:\Users\Admin\AppData\Local\Temp\6dd05e374c550f42a7b400753a1a5a40.exe
        "C:\Users\Admin\AppData\Local\Temp\6dd05e374c550f42a7b400753a1a5a40.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4064
        • C:\Users\Admin\AppData\Local\Temp\6dd05e374c550f42a7b400753a1a5a40.exe
          "C:\Users\Admin\AppData\Local\Temp\6dd05e374c550f42a7b400753a1a5a40.exe"
          3⤵
          • Checks computer location settings
          • Maps connected drives based on registry
          • Drops file in System32 directory
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4160
          • C:\Windows\SysWOW64\igfxcs32.exe
            "C:\Windows\SysWOW64\igfxcs32.exe" C:\Users\Admin\AppData\Local\Temp\6DD05E~1.EXE
            4⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:3176
            • C:\Windows\SysWOW64\igfxcs32.exe
              "C:\Windows\SysWOW64\igfxcs32.exe" C:\Users\Admin\AppData\Local\Temp\6DD05E~1.EXE
              5⤵
              • Modifies firewall policy service
              • Deletes itself
              • Executes dropped EXE
              • Adds Run key to start application
              • Maps connected drives based on registry
              • Drops file in System32 directory
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:1688

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\igfxcs32.exe

            Filesize

            255KB

            MD5

            6dd05e374c550f42a7b400753a1a5a40

            SHA1

            b266fcb55bb01402f373a751a4d9e2018f489fb3

            SHA256

            040b879f7816d317d02b442f12abaa24d75362340878cdfbdce01c9b2c4eed10

            SHA512

            638f143ea51eb88f96475b5fa6c2d0f09e0f9b48c32cf7db1296f210bc0f4ebff2189cb93965171b2c761f10fd43a30c5b2e078e2a9f1b10c3b34fcffea645f2

          • memory/1688-46-0x0000000000400000-0x0000000000467000-memory.dmp

            Filesize

            412KB

          • memory/1688-47-0x0000000000400000-0x0000000000467000-memory.dmp

            Filesize

            412KB

          • memory/1688-51-0x0000000000400000-0x0000000000467000-memory.dmp

            Filesize

            412KB

          • memory/1688-57-0x0000000000400000-0x0000000000467000-memory.dmp

            Filesize

            412KB

          • memory/4160-0-0x0000000000400000-0x0000000000467000-memory.dmp

            Filesize

            412KB

          • memory/4160-2-0x0000000000400000-0x0000000000467000-memory.dmp

            Filesize

            412KB

          • memory/4160-4-0x0000000000400000-0x0000000000467000-memory.dmp

            Filesize

            412KB

          • memory/4160-31-0x0000000000400000-0x0000000000467000-memory.dmp

            Filesize

            412KB

          • memory/4160-39-0x0000000000400000-0x0000000000467000-memory.dmp

            Filesize

            412KB