Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    05/06/2024, 02:09

General

  • Target
    2a4c4774b3dc169e1bcd80dcba50c680_NeikiAnalytics.exe
  • Size 1.9MB
  • Sample240605-cldsysbh96
  • SHA256 cab29c9ab55e8abba46f02e6002a5f34169ed7b8b370280011cd44eb5475bb3d
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • DcRat

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

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Process spawned unexpected child process 6 IoCs

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

  • DCRat payload 5 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 4 IoCs
  • Creates scheduled task(s) 1 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 49 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 18 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\2a4c4774b3dc169e1bcd80dcba50c680_NeikiAnalytics.exe
    "C:\Users\Admin\AppData\Local\Temp\2a4c4774b3dc169e1bcd80dcba50c680_NeikiAnalytics.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Adds Run key to start application
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2796
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\2a4c4774b3dc169e1bcd80dcba50c680_NeikiAnalytics.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2404
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\security\ApplicationId\PolicyManagement\Idle.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:764
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\Microsoft Office\Office14\1033\spoolsv.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1636
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\B2zC3mwCkt.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2884
      • C:\Windows\system32\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:1628
        • C:\Program Files\Microsoft Office\Office14\1033\spoolsv.exe
          "C:\Program Files\Microsoft Office\Office14\1033\spoolsv.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2120
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 11 /tr "'C:\Windows\security\ApplicationId\PolicyManagement\Idle.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2804
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Windows\security\ApplicationId\PolicyManagement\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2484
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 11 /tr "'C:\Windows\security\ApplicationId\PolicyManagement\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2476
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 12 /tr "'C:\Program Files\Microsoft Office\Office14\1033\spoolsv.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2492
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Program Files\Microsoft Office\Office14\1033\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2620
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 10 /tr "'C:\Program Files\Microsoft Office\Office14\1033\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2464

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          spoolsv.exe

          • Path C:\Program Files\Microsoft Office\Office14\1033\spoolsv.exe
          • Size 1.7MB
          • SHA256 6e1cdb3636837e916055dd7de57ab29b9d3f0e2fd150bed47e57cb43fc9ce578
          • MD5 SHA1 SHA512 SSDEEP

          spoolsv.exe

          • Path C:\Program Files\Microsoft Office\Office14\1033\spoolsv.exe
          • Size 448KB
          • SHA256 b2c29957a411c89dc3b12fbf7eb61ddba5b374ca5af1b51b8a7f6fcabd1d9cfd
          • MD5 SHA1 SHA512 SSDEEP

          B2zC3mwCkt.bat

          • Path C:\Users\Admin\AppData\Local\Temp\B2zC3mwCkt.bat
          • Size 224B
          • SHA256 5dd6c2bcf5262780a934203e459d462c6f193faecb7393e350d44477b7275c6e
          • MD5 SHA1 SHA512

          590aee7bdd69b59b.customDestinations-ms

          • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
          • Size 7KB
          • SHA256 9e3a14fb5317fa6aaf48c44029594afd9b5bd6726e71b8135001a60213518980
          • MD5 SHA1 SHA512 SSDEEP

          Idle.exe

          • Path C:\Windows\security\ApplicationId\PolicyManagement\Idle.exe
          • Size 1.9MB
          • SHA256 cab29c9ab55e8abba46f02e6002a5f34169ed7b8b370280011cd44eb5475bb3d
          • MD5 SHA1 SHA512 SSDEEP

          memory/2120-66-0x00000000001E0000-0x00000000003DA000-memory.dmp

          memory/2404-62-0x000000001B650000-0x000000001B932000-memory.dmp

          memory/2404-63-0x0000000001F60000-0x0000000001F68000-memory.dmp

          memory/2796-19-0x000000001A8A0000-0x000000001A8AA000-memory.dmp

          memory/2796-11-0x00000000023A0000-0x00000000023AC000-memory.dmp

          memory/2796-18-0x000000001A890000-0x000000001A89C000-memory.dmp

          memory/2796-17-0x000000001A880000-0x000000001A88E000-memory.dmp

          memory/2796-21-0x000007FEF5830000-0x000007FEF621C000-memory.dmp

          memory/2796-20-0x000000001A8B0000-0x000000001A8BC000-memory.dmp

          memory/2796-0-0x000007FEF5833000-0x000007FEF5834000-memory.dmp

          memory/2796-16-0x000000001A870000-0x000000001A878000-memory.dmp

          memory/2796-15-0x00000000023E0000-0x00000000023EE000-memory.dmp

          memory/2796-13-0x00000000023C0000-0x00000000023C8000-memory.dmp

          memory/2796-12-0x00000000023B0000-0x00000000023BC000-memory.dmp

          memory/2796-14-0x00000000023D0000-0x00000000023DC000-memory.dmp

          memory/2796-9-0x0000000002360000-0x000000000236C000-memory.dmp

          memory/2796-7-0x00000000009C0000-0x00000000009D6000-memory.dmp

          memory/2796-6-0x00000000009B0000-0x00000000009C0000-memory.dmp

          memory/2796-10-0x0000000002370000-0x0000000002382000-memory.dmp

          memory/2796-8-0x0000000002350000-0x0000000002360000-memory.dmp

          memory/2796-4-0x0000000000980000-0x0000000000988000-memory.dmp

          memory/2796-61-0x000007FEF5830000-0x000007FEF621C000-memory.dmp

          memory/2796-5-0x0000000000990000-0x00000000009AC000-memory.dmp

          memory/2796-3-0x00000000004D0000-0x00000000004DE000-memory.dmp

          memory/2796-2-0x000007FEF5830000-0x000007FEF621C000-memory.dmp

          memory/2796-1-0x00000000009E0000-0x0000000000BDA000-memory.dmp