Resubmissions

11-08-2022 15:42

220811-s5lkxabda5 10

12-07-2022 11:51

220712-n1lynaghdr 10

Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20220718-en
  • resource tags

    arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
  • submitted
    11-08-2022 15:42

General

  • Target

    4adbe2d65372183b94331aa85fbc68fd11c1031a36f316c8fe07e226f04651d2.exe

  • Size

    886KB

  • MD5

    40eaca541433514a31508b7a328db6ef

  • SHA1

    bca267e3a5007147c9c0cb44612bf6027b47ba76

  • SHA256

    4adbe2d65372183b94331aa85fbc68fd11c1031a36f316c8fe07e226f04651d2

  • SHA512

    3fa774f21f13b349e3474ba6da9d0835151d31847f2051f731d24a71e8e6b66be0d35d495b4db9bed7f1697c55533c141b2b70f8d94d53d3e7b50e6cc9ffbf24

Malware Config

Extracted

Family

xtremerat

C2

feelmepkudie.no-ip.org

Signatures

  • Detect XtremeRAT payload 16 IoCs
  • XtremeRAT

    The XtremeRAT was developed by xtremecoder and has been available since at least 2010, and written in Delphi.

  • Modifies Installed Components in the registry 2 TTPs 4 IoCs
  • Adds Run key to start application 2 TTPs 8 IoCs
  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4adbe2d65372183b94331aa85fbc68fd11c1031a36f316c8fe07e226f04651d2.exe
    "C:\Users\Admin\AppData\Local\Temp\4adbe2d65372183b94331aa85fbc68fd11c1031a36f316c8fe07e226f04651d2.exe"
    1⤵
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:308
    • C:\Users\Admin\AppData\Local\Temp\4adbe2d65372183b94331aa85fbc68fd11c1031a36f316c8fe07e226f04651d2.ExE
      "C:\Users\Admin\AppData\Local\Temp\4adbe2d65372183b94331aa85fbc68fd11c1031a36f316c8fe07e226f04651d2.ExE"
      2⤵
      • Modifies Installed Components in the registry
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:2020
      • C:\Windows\SysWOW64\svchost.exe
        svchost.exe
        3⤵
        • Modifies Installed Components in the registry
        • Adds Run key to start application
        PID:1952
      • C:\Program Files\Internet Explorer\iexplore.exe
        "C:\Program Files\Internet Explorer\iexplore.exe"
        3⤵
          PID:1948
        • C:\Windows\SysWOW64\explorer.exe
          explorer.exe
          3⤵
            PID:904
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe"
            3⤵
              PID:1692
            • C:\Windows\SysWOW64\explorer.exe
              explorer.exe
              3⤵
                PID:1172
              • C:\Program Files\Internet Explorer\iexplore.exe
                "C:\Program Files\Internet Explorer\iexplore.exe"
                3⤵
                  PID:1364
                • C:\Windows\SysWOW64\explorer.exe
                  explorer.exe
                  3⤵
                    PID:1960

              Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\Users\Admin\AppData\Local\Temp\WinUpdate\Update.exe

                Filesize

                886KB

                MD5

                40eaca541433514a31508b7a328db6ef

                SHA1

                bca267e3a5007147c9c0cb44612bf6027b47ba76

                SHA256

                4adbe2d65372183b94331aa85fbc68fd11c1031a36f316c8fe07e226f04651d2

                SHA512

                3fa774f21f13b349e3474ba6da9d0835151d31847f2051f731d24a71e8e6b66be0d35d495b4db9bed7f1697c55533c141b2b70f8d94d53d3e7b50e6cc9ffbf24

              • memory/1952-75-0x0000000000C80000-0x0000000000C93000-memory.dmp

                Filesize

                76KB

              • memory/1960-83-0x0000000000C80000-0x0000000000C93000-memory.dmp

                Filesize

                76KB

              • memory/1960-81-0x0000000000C80000-0x0000000000C93000-memory.dmp

                Filesize

                76KB

              • memory/1960-80-0x0000000073021000-0x0000000073023000-memory.dmp

                Filesize

                8KB

              • memory/2020-60-0x0000000000C80000-0x0000000000C93000-memory.dmp

                Filesize

                76KB

              • memory/2020-57-0x0000000000C80000-0x0000000000C93000-memory.dmp

                Filesize

                76KB

              • memory/2020-66-0x0000000000C80000-0x0000000000C93000-memory.dmp

                Filesize

                76KB

              • memory/2020-67-0x0000000075591000-0x0000000075593000-memory.dmp

                Filesize

                8KB

              • memory/2020-68-0x0000000000C80000-0x0000000000C93000-memory.dmp

                Filesize

                76KB

              • memory/2020-69-0x0000000000C80000-0x0000000000C93000-memory.dmp

                Filesize

                76KB

              • memory/2020-64-0x0000000000C80000-0x0000000000C93000-memory.dmp

                Filesize

                76KB

              • memory/2020-56-0x0000000000C80000-0x0000000000C93000-memory.dmp

                Filesize

                76KB

              • memory/2020-63-0x0000000000C80000-0x0000000000C93000-memory.dmp

                Filesize

                76KB

              • memory/2020-61-0x0000000000C80000-0x0000000000C93000-memory.dmp

                Filesize

                76KB

              • memory/2020-62-0x0000000000C80000-0x0000000000C93000-memory.dmp

                Filesize

                76KB

              • memory/2020-82-0x0000000000C80000-0x0000000000C93000-memory.dmp

                Filesize

                76KB

              • memory/2020-59-0x0000000000C80000-0x0000000000C93000-memory.dmp

                Filesize

                76KB