Analysis

  • max time kernel
    122s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20231020-en
  • resource tags

    arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
  • submitted
    18/11/2023, 06:38

General

  • Target

    NEAS.8b63b4a62f39fe51f04bad846500d900.exe

  • Size

    1.6MB

  • MD5

    8b63b4a62f39fe51f04bad846500d900

  • SHA1

    cd57f895dfbdef71daaec73832d686e25c4a9443

  • SHA256

    12d85b878dd9e2e4bf577444948bc0a1db87009f5d51e6e79403d1d8c2b5861d

  • SHA512

    8eb64ea0b612c306eba388c733b2e65ffa93111b6062d2034d4733352be8721c0450f1a130dbcbf9c17510612f2374017a1597ed90a20d5d9dd99d6b4c7c09d5

  • SSDEEP

    24576:dPMYXSRYoY64PXxohpNzb44qv/x8GMpmIB8VDLjyfH4VYiwzcHA8csX1OA:dPCRI+NoHwqRCY2cHAMF

Score
10/10

Malware Config

Signatures

  • DcRat

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

  • Process spawned unexpected child process 21 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • DCRat payload 6 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Executes dropped EXE 1 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 21 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\NEAS.8b63b4a62f39fe51f04bad846500d900.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.8b63b4a62f39fe51f04bad846500d900.exe"
    1⤵
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1960
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\SpsobUXTBt.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3036
      • C:\Windows\system32\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:2944
        • C:\Users\Admin\taskhost.exe
          "C:\Users\Admin\taskhost.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2352
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 12 /tr "'C:\Users\Admin\SendTo\System.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2668
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Users\Admin\SendTo\System.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2508
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 14 /tr "'C:\Users\Admin\SendTo\System.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2564
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 11 /tr "'C:\Users\All Users\Idle.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2592
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Users\All Users\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2756
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 13 /tr "'C:\Users\All Users\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2696
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 11 /tr "'C:\Users\Admin\Downloads\dllhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2572
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Users\Admin\Downloads\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2624
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 6 /tr "'C:\Users\Admin\Downloads\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3004
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\Windows\Installer\{90140000-0011-0000-0000-0000000FF1CE}\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2372
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\Installer\{90140000-0011-0000-0000-0000000FF1CE}\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1984
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\Windows\Installer\{90140000-0011-0000-0000-0000000FF1CE}\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:520
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 8 /tr "'C:\Users\Admin\taskhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1196
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\Users\Admin\taskhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1308
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 10 /tr "'C:\Users\Admin\taskhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2840
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Microsoft Analysis Services\AS OLEDB\wininit.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2736
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Analysis Services\AS OLEDB\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2792
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Microsoft Analysis Services\AS OLEDB\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1396
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 11 /tr "'C:\Users\Default\explorer.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:888
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Users\Default\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3024
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 10 /tr "'C:\Users\Default\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1992

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\SpsobUXTBt.bat

            Filesize

            192B

            MD5

            cec63961d1098609b76d28747fc9fea4

            SHA1

            a604d120a8b54fb2d86ace7ad05d977cc0e61146

            SHA256

            c9568e31379a941fc7daee6baa4bba43aa5ba21b53760631ddab27e917ae9daa

            SHA512

            d0404b6c681157ef421fc200c8508d902eee720397c29eb67daba1ddf08c445c0a7204fc52b6d4f7031c6b029721d955d1776b0b0c02c434786ddcc6d1c754d6

          • C:\Users\Admin\taskhost.exe

            Filesize

            1.6MB

            MD5

            8b63b4a62f39fe51f04bad846500d900

            SHA1

            cd57f895dfbdef71daaec73832d686e25c4a9443

            SHA256

            12d85b878dd9e2e4bf577444948bc0a1db87009f5d51e6e79403d1d8c2b5861d

            SHA512

            8eb64ea0b612c306eba388c733b2e65ffa93111b6062d2034d4733352be8721c0450f1a130dbcbf9c17510612f2374017a1597ed90a20d5d9dd99d6b4c7c09d5

          • C:\Users\Admin\taskhost.exe

            Filesize

            1.6MB

            MD5

            8b63b4a62f39fe51f04bad846500d900

            SHA1

            cd57f895dfbdef71daaec73832d686e25c4a9443

            SHA256

            12d85b878dd9e2e4bf577444948bc0a1db87009f5d51e6e79403d1d8c2b5861d

            SHA512

            8eb64ea0b612c306eba388c733b2e65ffa93111b6062d2034d4733352be8721c0450f1a130dbcbf9c17510612f2374017a1597ed90a20d5d9dd99d6b4c7c09d5

          • C:\Users\Admin\taskhost.exe

            Filesize

            1.6MB

            MD5

            8b63b4a62f39fe51f04bad846500d900

            SHA1

            cd57f895dfbdef71daaec73832d686e25c4a9443

            SHA256

            12d85b878dd9e2e4bf577444948bc0a1db87009f5d51e6e79403d1d8c2b5861d

            SHA512

            8eb64ea0b612c306eba388c733b2e65ffa93111b6062d2034d4733352be8721c0450f1a130dbcbf9c17510612f2374017a1597ed90a20d5d9dd99d6b4c7c09d5

          • memory/1960-6-0x00000000005A0000-0x00000000005A8000-memory.dmp

            Filesize

            32KB

          • memory/1960-13-0x0000000002280000-0x000000000228A000-memory.dmp

            Filesize

            40KB

          • memory/1960-0-0x0000000000AE0000-0x0000000000C7E000-memory.dmp

            Filesize

            1.6MB

          • memory/1960-7-0x0000000000640000-0x0000000000650000-memory.dmp

            Filesize

            64KB

          • memory/1960-8-0x0000000000630000-0x000000000063C000-memory.dmp

            Filesize

            48KB

          • memory/1960-9-0x0000000000650000-0x0000000000662000-memory.dmp

            Filesize

            72KB

          • memory/1960-10-0x0000000000AB0000-0x0000000000ABC000-memory.dmp

            Filesize

            48KB

          • memory/1960-11-0x0000000000AC0000-0x0000000000AC8000-memory.dmp

            Filesize

            32KB

          • memory/1960-12-0x0000000000AD0000-0x0000000000ADC000-memory.dmp

            Filesize

            48KB

          • memory/1960-5-0x0000000000580000-0x0000000000596000-memory.dmp

            Filesize

            88KB

          • memory/1960-4-0x00000000002C0000-0x00000000002D0000-memory.dmp

            Filesize

            64KB

          • memory/1960-3-0x0000000000350000-0x000000000036C000-memory.dmp

            Filesize

            112KB

          • memory/1960-82-0x000007FEF6140000-0x000007FEF6B2C000-memory.dmp

            Filesize

            9.9MB

          • memory/1960-2-0x000000001B100000-0x000000001B180000-memory.dmp

            Filesize

            512KB

          • memory/1960-1-0x000007FEF6140000-0x000007FEF6B2C000-memory.dmp

            Filesize

            9.9MB

          • memory/2352-85-0x00000000013E0000-0x000000000157E000-memory.dmp

            Filesize

            1.6MB

          • memory/2352-86-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

            Filesize

            9.9MB

          • memory/2352-87-0x000000001B280000-0x000000001B300000-memory.dmp

            Filesize

            512KB

          • memory/2352-88-0x00000000005A0000-0x00000000005B2000-memory.dmp

            Filesize

            72KB

          • memory/2352-89-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

            Filesize

            9.9MB