Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    16/04/2021, 12:01

General

  • Target
    ed5872028e073a00549aa0ffe151dc4d641eae83694c1fcc3dc545183c091d97.exe
  • Size 283KB
  • Sample210416-bjfkp7eabj
  • SHA256 ed5872028e073a00549aa0ffe151dc4d641eae83694c1fcc3dc545183c091d97
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • DcRat

    DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

  • DiamondFox

    DiamondFox is a multipurpose botnet with many capabilities.

  • DiamondFox payload 3 IoCs

    Detects DiamondFox payload in file/memory.

  • NirSoft WebBrowserPassView 3 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 3 IoCs
  • Drops startup file 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • 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 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 56 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ed5872028e073a00549aa0ffe151dc4d641eae83694c1fcc3dc545183c091d97.exe
    "C:\Users\Admin\AppData\Local\Temp\ed5872028e073a00549aa0ffe151dc4d641eae83694c1fcc3dc545183c091d97.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:912
    • C:\Users\Admin\AppData\Local\Temp\ed5872028e073a00549aa0ffe151dc4d641eae83694c1fcc3dc545183c091d97.exe
      "C:\Users\Admin\AppData\Local\Temp\ed5872028e073a00549aa0ffe151dc4d641eae83694c1fcc3dc545183c091d97.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2880
      • C:\Windows\SysWOW64\Wbem\wmic.exe
        "wmic" /Node:localhost /Namespace:\\root\SecurityCenter2 path AntiVirusProduct get DisplayName /FORMAT:List
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2816
      • C:\Windows\SysWOW64\Wbem\wmic.exe
        "wmic" os get caption /FORMAT:List
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2236
      • C:\Windows\SysWOW64\Wbem\wmic.exe
        "wmic" path win32_VideoController get caption /FORMAT:List
        3⤵
          PID:3916
        • C:\Windows\SysWOW64\Wbem\wmic.exe
          "wmic" path win32_NetworkAdapterConfiguration where IPEnabled=1 get IPAddress /FORMAT:List
          3⤵
            PID:2072
          • C:\Windows\SysWOW64\Wbem\wmic.exe
            "wmic" LogicalDisk Where DriveType=4 get VolumeName /FORMAT:List
            3⤵
              PID:3852
            • C:\Windows\SysWOW64\Wbem\wmic.exe
              "wmic" path win32_PingStatus where address='vladisfoxlink.ru' get StatusCode /FORMAT:List
              3⤵
                PID:1272
              • C:\Windows\SysWOW64\Wbem\wmic.exe
                "wmic" path win32_PingStatus where address='vladisfoxlink.ru' get ResponseTime /FORMAT:List
                3⤵
                  PID:3548
                • C:\Users\Admin\AppData\Local\Temp\ed5872028e073a00549aa0ffe151dc4d641eae83694c1fcc3dc545183c091d97.exe
                  /scomma "C:\Users\Admin\AppData\Local\Temp\1.log"
                  3⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:1940

            Network

                  MITRE ATT&CK Enterprise v6

                  Replay Monitor

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                  Downloads

                  memory/912-121-0x0000000005A20000-0x0000000005A21000-memory.dmp

                  memory/912-117-0x00000000056E0000-0x00000000056E1000-memory.dmp

                  memory/912-118-0x0000000005650000-0x000000000568F000-memory.dmp

                  memory/912-119-0x0000000005980000-0x0000000005981000-memory.dmp

                  memory/912-120-0x00000000056E0000-0x0000000005BDE000-memory.dmp

                  memory/912-114-0x0000000000DE0000-0x0000000000DE1000-memory.dmp

                  memory/912-122-0x00000000056E0000-0x0000000005BDE000-memory.dmp

                  memory/912-116-0x0000000005BE0000-0x0000000005BE1000-memory.dmp

                  memory/912-126-0x0000000006670000-0x0000000006671000-memory.dmp

                  memory/1940-136-0x0000000000400000-0x000000000047C000-memory.dmp

                  memory/1940-134-0x0000000000400000-0x000000000047C000-memory.dmp

                  memory/2880-125-0x0000000000400000-0x0000000000435000-memory.dmp

                  memory/2880-123-0x0000000000400000-0x0000000000435000-memory.dmp