Analysis

  • max time kernel
    119s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    20-01-2025 04:30

General

  • Target

    877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e19.exe

  • Size

    1.8MB

  • MD5

    3d213353948aba4d80c28823d8661951

  • SHA1

    8c7dadac2ee5f348a8940ab47187b39fd025bead

  • SHA256

    877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e19

  • SHA512

    36ba2c76563094e5c8248a05c088ad9c496573ccb6a9799759c38ef77f89e61b9832c617abc7322646c7c029ec8e573f82a4a1cc25b656bee5af82a188cab6c1

  • SSDEEP

    24576:/r34Nhem94rOh31QzGpKHaHYSvvv22db+PowhGhomMJV4ynedX4QD/d5lBxdU7it:/I6g1AqY2v22pVfSJKyiXRd5lKu

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.

  • Drops file in System32 directory 1 IoCs
  • Drops file in Program Files directory 6 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 1 IoCs
  • 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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 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\877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e19.exe
    "C:\Users\Admin\AppData\Local\Temp\877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e19.exe"
    1⤵
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2192
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\Dljc6B4G7N.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2684
      • C:\Windows\system32\chcp.com
        chcp 65001
        3⤵
          PID:1632
        • C:\Windows\system32\PING.EXE
          ping -n 10 localhost
          3⤵
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:1876
        • C:\Users\Admin\AppData\Local\Temp\877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e19.exe
          "C:\Users\Admin\AppData\Local\Temp\877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e19.exe"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1860
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 13 /tr "'C:\Program Files\Windows Journal\es-ES\wininit.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1972
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files\Windows Journal\es-ES\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1052
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 5 /tr "'C:\Program Files\Windows Journal\es-ES\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2476
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 11 /tr "'C:\Windows\en-US\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1744
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\en-US\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:272
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Windows\en-US\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1576
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e198" /sc MINUTE /mo 9 /tr "'C:\Program Files\7-Zip\Lang\877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e19.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:536
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e19" /sc ONLOGON /tr "'C:\Program Files\7-Zip\Lang\877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e19.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:376
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e198" /sc MINUTE /mo 8 /tr "'C:\Program Files\7-Zip\Lang\877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e19.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1580
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Runtime\x86\explorer.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2696
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Runtime\x86\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1788
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Runtime\x86\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2936
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 6 /tr "'C:\Recovery\1b8b1de2-69f6-11ef-9774-62cb582c238c\explorer.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3060
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Recovery\1b8b1de2-69f6-11ef-9774-62cb582c238c\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1928
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 12 /tr "'C:\Recovery\1b8b1de2-69f6-11ef-9774-62cb582c238c\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:356
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e198" /sc MINUTE /mo 6 /tr "'C:\Users\Admin\AppData\Local\Temp\877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e19.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1916
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e19" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Local\Temp\877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e19.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1992
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e198" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\AppData\Local\Temp\877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e19.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1684

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Program Files\Windows Journal\es-ES\wininit.exe

      Filesize

      1.8MB

      MD5

      3d213353948aba4d80c28823d8661951

      SHA1

      8c7dadac2ee5f348a8940ab47187b39fd025bead

      SHA256

      877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e19

      SHA512

      36ba2c76563094e5c8248a05c088ad9c496573ccb6a9799759c38ef77f89e61b9832c617abc7322646c7c029ec8e573f82a4a1cc25b656bee5af82a188cab6c1

    • C:\Users\Admin\AppData\Local\Temp\Dljc6B4G7N.bat

      Filesize

      230B

      MD5

      0ac5601f90c0fd214464840498e367ad

      SHA1

      87a85701b51965a7288d4f690ddf59515dc8392e

      SHA256

      116566242c41dcb53d7c123da4891ad764e10417e48bf9d37b7e580556931194

      SHA512

      4c5eac193f29d463f303b946183702caf5d55867003f821232fbd24f8733ce22c0eb61eb99c40e4d4fac0d9df5d6c9b8a74ecd533634b7eebfdf5b783a6e91fd

    • memory/1860-35-0x00000000002E0000-0x00000000004BE000-memory.dmp

      Filesize

      1.9MB

    • memory/2192-15-0x0000000000210000-0x000000000021E000-memory.dmp

      Filesize

      56KB

    • memory/2192-17-0x000007FEF6350000-0x000007FEF6D3C000-memory.dmp

      Filesize

      9.9MB

    • memory/2192-6-0x0000000000200000-0x000000000020E000-memory.dmp

      Filesize

      56KB

    • memory/2192-10-0x000007FEF6350000-0x000007FEF6D3C000-memory.dmp

      Filesize

      9.9MB

    • memory/2192-16-0x000007FEF6350000-0x000007FEF6D3C000-memory.dmp

      Filesize

      9.9MB

    • memory/2192-0-0x000007FEF6353000-0x000007FEF6354000-memory.dmp

      Filesize

      4KB

    • memory/2192-13-0x000007FEF6350000-0x000007FEF6D3C000-memory.dmp

      Filesize

      9.9MB

    • memory/2192-4-0x000007FEF6350000-0x000007FEF6D3C000-memory.dmp

      Filesize

      9.9MB

    • memory/2192-12-0x0000000000430000-0x0000000000448000-memory.dmp

      Filesize

      96KB

    • memory/2192-9-0x0000000000410000-0x000000000042C000-memory.dmp

      Filesize

      112KB

    • memory/2192-7-0x000007FEF6350000-0x000007FEF6D3C000-memory.dmp

      Filesize

      9.9MB

    • memory/2192-3-0x000007FEF6350000-0x000007FEF6D3C000-memory.dmp

      Filesize

      9.9MB

    • memory/2192-2-0x000007FEF6350000-0x000007FEF6D3C000-memory.dmp

      Filesize

      9.9MB

    • memory/2192-34-0x000007FEF6350000-0x000007FEF6D3C000-memory.dmp

      Filesize

      9.9MB

    • memory/2192-1-0x0000000000230000-0x000000000040E000-memory.dmp

      Filesize

      1.9MB