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Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    13/01/2025, 02:15

General

  • Target

    46cf8f5e46c3dbdd32c5f300f6fd395a7f12c0ec611de9e518bf7312f187590c.exe

  • Size

    2.3MB

  • MD5

    02d4afb627db486201d4700854e390d9

  • SHA1

    f63533f82c2a434f9104ccc9beee3216796aeb14

  • SHA256

    46cf8f5e46c3dbdd32c5f300f6fd395a7f12c0ec611de9e518bf7312f187590c

  • SHA512

    0ccaa408f5e1e3481b413ab07dea2b77540e500097a7ab194f6052161517b2c29214d680e7731b9a39a300edf3b88a3b564f85c8008386099474e82c028109fc

  • SSDEEP

    49152:uAHOUI3tHsLi/P025up1V40tz/i4Eq/qo8ychEcMPbVxFAK6E00:uIQ3L/zULV/qWch7MPxxFh6E0

Score
10/10

Malware Config

Signatures

  • DcRat

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

  • Dcrat family
  • Process spawned unexpected child process 18 IoCs

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

  • DCRat payload 3 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

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

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 18 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 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\46cf8f5e46c3dbdd32c5f300f6fd395a7f12c0ec611de9e518bf7312f187590c.exe
    "C:\Users\Admin\AppData\Local\Temp\46cf8f5e46c3dbdd32c5f300f6fd395a7f12c0ec611de9e518bf7312f187590c.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2876
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\AbHAxMDrDz.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2556
      • C:\Windows\system32\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:3032
        • C:\Program Files\Microsoft Office\Office14\wininit.exe
          "C:\Program Files\Microsoft Office\Office14\wininit.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1352
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 7 /tr "'C:\Recovery\18fc4542-69f6-11ef-a46c-62cb582c238c\explorer.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2632
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Recovery\18fc4542-69f6-11ef-a46c-62cb582c238c\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2820
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 9 /tr "'C:\Recovery\18fc4542-69f6-11ef-a46c-62cb582c238c\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2572
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 13 /tr "'C:\Users\Admin\Templates\OSPPSVC.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1940
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\Users\Admin\Templates\OSPPSVC.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2160
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 12 /tr "'C:\Users\Admin\Templates\OSPPSVC.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:604
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 13 /tr "'C:\Recovery\18fc4542-69f6-11ef-a46c-62cb582c238c\Idle.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:600
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Recovery\18fc4542-69f6-11ef-a46c-62cb582c238c\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1432
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 12 /tr "'C:\Recovery\18fc4542-69f6-11ef-a46c-62cb582c238c\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2944
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 7 /tr "'C:\Program Files\Microsoft Office\Office14\wininit.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2672
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files\Microsoft Office\Office14\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2524
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 8 /tr "'C:\Program Files\Microsoft Office\Office14\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2396
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 12 /tr "'C:\Program Files\Windows Defender\ja-JP\OSPPSVC.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2296
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\Program Files\Windows Defender\ja-JP\OSPPSVC.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2680
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 8 /tr "'C:\Program Files\Windows Defender\ja-JP\OSPPSVC.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2564
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 13 /tr "'C:\MSOCache\All Users\taskhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2980
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\MSOCache\All Users\taskhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2968
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\taskhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2636

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Program Files\Windows Defender\ja-JP\OSPPSVC.exe

      Filesize

      2.3MB

      MD5

      02d4afb627db486201d4700854e390d9

      SHA1

      f63533f82c2a434f9104ccc9beee3216796aeb14

      SHA256

      46cf8f5e46c3dbdd32c5f300f6fd395a7f12c0ec611de9e518bf7312f187590c

      SHA512

      0ccaa408f5e1e3481b413ab07dea2b77540e500097a7ab194f6052161517b2c29214d680e7731b9a39a300edf3b88a3b564f85c8008386099474e82c028109fc

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

      Filesize

      219B

      MD5

      55cd6056f3658fb07c0d111f3601131c

      SHA1

      2698020d093d918e389d8c2cf38b7545032b5ee6

      SHA256

      f66e7ee0b79ee4f598ac0e106ddc735fb33c4487bc278587d109f445e56ba7eb

      SHA512

      bece0776d82a75ef4b03fad7a9d7ba7763f51bfefd85dfc9df089a6ad1473b399bfe232dd2d3a91928c6d7f8a4ee8536bdd23a2a4c3704c36290393c916fecb8

    • memory/1352-28-0x00000000000D0000-0x000000000031E000-memory.dmp

      Filesize

      2.3MB

    • memory/2876-0-0x000007FEF5FB3000-0x000007FEF5FB4000-memory.dmp

      Filesize

      4KB

    • memory/2876-1-0x00000000009D0000-0x0000000000C1E000-memory.dmp

      Filesize

      2.3MB

    • memory/2876-2-0x000007FEF5FB0000-0x000007FEF699C000-memory.dmp

      Filesize

      9.9MB

    • memory/2876-3-0x00000000002D0000-0x00000000002EC000-memory.dmp

      Filesize

      112KB

    • memory/2876-4-0x0000000000400000-0x0000000000416000-memory.dmp

      Filesize

      88KB

    • memory/2876-5-0x0000000002290000-0x00000000022E6000-memory.dmp

      Filesize

      344KB

    • memory/2876-6-0x0000000000420000-0x0000000000432000-memory.dmp

      Filesize

      72KB

    • memory/2876-7-0x0000000000430000-0x000000000043E000-memory.dmp

      Filesize

      56KB

    • memory/2876-25-0x000007FEF5FB0000-0x000007FEF699C000-memory.dmp

      Filesize

      9.9MB