Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-01-2025 13:01

General

  • Target

    0ba179fecafc8c823fcd576e0d2f31fff23072e64dbeffb0a2c7d42631cacc0d.exe

  • Size

    1.2MB

  • MD5

    3e486391221891462495325b3bbf8b13

  • SHA1

    c65d92a465ec8967a7fba171ac6e62f3aaae2ff0

  • SHA256

    0ba179fecafc8c823fcd576e0d2f31fff23072e64dbeffb0a2c7d42631cacc0d

  • SHA512

    066ebb9cdfe3b45f893ec031237319d49a1d323e1f928a2ffde324e718adef84bb6c397f2cc12814a069ea71106b44996abf538ac2b8bd7e456cfc3ec76138ff

  • SSDEEP

    24576:Zrtb29jyTS6MoaS0BPXM3l9HDesNM1w3HzjM4LjvTCdPILP+4h:jb29j5jf/GB6eZLGo

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 6 IoCs

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

  • UAC bypass 3 TTPs 6 IoCs
  • DCRat payload 7 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 6 IoCs
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Drops file in System32 directory 5 IoCs
  • Drops file in Windows directory 10 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 6 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 6 IoCs
  • System policy modification 1 TTPs 6 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\0ba179fecafc8c823fcd576e0d2f31fff23072e64dbeffb0a2c7d42631cacc0d.exe
    "C:\Users\Admin\AppData\Local\Temp\0ba179fecafc8c823fcd576e0d2f31fff23072e64dbeffb0a2c7d42631cacc0d.exe"
    1⤵
    • UAC bypass
    • Checks computer location settings
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:1056
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\nE9G1IfIwG.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4084
      • C:\Windows\system32\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:3476
        • C:\Windows\WMSysPr9\sysmon.exe
          "C:\Windows\WMSysPr9\sysmon.exe"
          3⤵
          • UAC bypass
          • Executes dropped EXE
          • Checks whether UAC is enabled
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • System policy modification
          PID:3276
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "0ba179fecafc8c823fcd576e0d2f31fff23072e64dbeffb0a2c7d42631cacc0d" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Local\Temp\jusched\0ba179fecafc8c823fcd576e0d2f31fff23072e64dbeffb0a2c7d42631cacc0d.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5000
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "0ba179fecafc8c823fcd576e0d2f31fff23072e64dbeffb0a2c7d42631cacc0d" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Local\Temp\dd_vcredistUI33C5\0ba179fecafc8c823fcd576e0d2f31fff23072e64dbeffb0a2c7d42631cacc0d.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1088
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Windows\System32\LanguageComponentsInstaller\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2568
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Windows\ServiceProfiles\dwm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:900
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Windows\WMSysPr9\sysmon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3888
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\sppsvc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5052

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\dd_vcredistUI33C5\0ba179fecafc8c823fcd576e0d2f31fff23072e64dbeffb0a2c7d42631cacc0d.exe

      Filesize

      1.2MB

      MD5

      7725a97f043df4d824b673f636779c04

      SHA1

      8aa385ea80b498e5b93ed9fc84bcbe7cbcee1eeb

      SHA256

      6f181a700714886f826221a9450eb0afb691126e2b893fc6fd82894deb6652f3

      SHA512

      290c0ca137e0729fc07fa1dfef25225e945a2505bc322ca4246c5db7e33fbe738ea182ee3dfa24221a295939cbe523b0924689e783b3e6c504978f686328d5ec

    • C:\Users\Admin\AppData\Local\Temp\jusched\0ba179fecafc8c823fcd576e0d2f31fff23072e64dbeffb0a2c7d42631cacc0d.exe

      Filesize

      1.2MB

      MD5

      9b6eb8afe38f9947d0d1b74011b6b2be

      SHA1

      e14152ae60f5291d2a0c849f221c8d38bba0fb99

      SHA256

      3d3dd165eacd13dcc86ee412ee358537d1f8390915451ccb338d7e2497ae81b2

      SHA512

      7158fbbdebf0c0e8066a85c2a7a12e7c3530dab4c4d25d687e4648fe4849e9f5ea048d3d1196efcb841ec40aaee5654bbd5493168ff8af297574a56a4f0de07f

    • C:\Users\Admin\AppData\Local\Temp\nE9G1IfIwG.bat

      Filesize

      194B

      MD5

      889cc0ed2d70207af8c98a2794d4b4dc

      SHA1

      65d0204fe87cf2854578d634cf1a95f24f7d5917

      SHA256

      4ac0abf3e2a5a5ced66db5045efa63960ecd8c97b03228abfd91f45e3c2456ac

      SHA512

      ab8d7dc71020634dce7c52b95faec106d4ee92c143904a4d811129f3d33048378056f00cd851716f2c47b772f56498d9eb131c68e6e6e3362c398ef5dd2832d7

    • C:\Windows\ServiceProfiles\dwm.exe

      Filesize

      1.2MB

      MD5

      76698d1cc503ae29a20402f7c9ab9bf2

      SHA1

      b82e185e23d4e63a886a7446e0d1abb6e6d5e3e4

      SHA256

      e610c97b8cf806f72f96d10690a061b3e43b1d6154ae59e1b8fba089dd1445d8

      SHA512

      c7d4dc1b3943b8ab65d7950037642d4d71f98e4b920cc64e4374534f8e752d0e575a1331dc29d23c107b70618b5965242059cb40ff6cf2de3e402c7ec2099848

    • C:\Windows\System32\LanguageComponentsInstaller\spoolsv.exe

      Filesize

      1.2MB

      MD5

      a141e62ccbc760900fd7b9d1090b9053

      SHA1

      e0199175dc38b276e5434d87ce2d37ae9e1d4e1e

      SHA256

      e631f7bc33ba00c08afa273585a707e3e9635d97e4c409749a1ff09453e0fecc

      SHA512

      3366bdff6d6f29b6b36a61259cc7f74d87e71a2ec638b27cc00edc5fd0cccc1c6463b27ce884c536520060d1aa3dbb7ddca92448d48c71ba7885926029fdad14

    • C:\Windows\WMSysPr9\sysmon.exe

      Filesize

      1.2MB

      MD5

      3e486391221891462495325b3bbf8b13

      SHA1

      c65d92a465ec8967a7fba171ac6e62f3aaae2ff0

      SHA256

      0ba179fecafc8c823fcd576e0d2f31fff23072e64dbeffb0a2c7d42631cacc0d

      SHA512

      066ebb9cdfe3b45f893ec031237319d49a1d323e1f928a2ffde324e718adef84bb6c397f2cc12814a069ea71106b44996abf538ac2b8bd7e456cfc3ec76138ff

    • C:\Windows\WMSysPr9\sysmon.exe

      Filesize

      1.2MB

      MD5

      77760d25680549a6e33d813225f15ae0

      SHA1

      3ba98784170c929615f2a606c1865bbcca860140

      SHA256

      cfe5bf369e60e17054176b8926c7336e53d0489e1a65815610a794886d1d90d2

      SHA512

      6e758c1402852a2ee6c669208b491160eefb086c1b5bc52b698d9292ad933e8e71a66413e367b6f6c36f1df841e145b8ee5f06035deceba678a481279ebbcbac

    • memory/1056-4-0x0000000001400000-0x000000000140C000-memory.dmp

      Filesize

      48KB

    • memory/1056-8-0x0000000002CF0000-0x0000000002CFC000-memory.dmp

      Filesize

      48KB

    • memory/1056-7-0x00000000013F0000-0x00000000013F8000-memory.dmp

      Filesize

      32KB

    • memory/1056-6-0x00000000013E0000-0x00000000013EA000-memory.dmp

      Filesize

      40KB

    • memory/1056-5-0x0000000001410000-0x000000000141C000-memory.dmp

      Filesize

      48KB

    • memory/1056-0-0x00007FFC04313000-0x00007FFC04315000-memory.dmp

      Filesize

      8KB

    • memory/1056-3-0x00000000013D0000-0x00000000013E0000-memory.dmp

      Filesize

      64KB

    • memory/1056-2-0x00007FFC04310000-0x00007FFC04DD1000-memory.dmp

      Filesize

      10.8MB

    • memory/1056-98-0x00007FFC04310000-0x00007FFC04DD1000-memory.dmp

      Filesize

      10.8MB

    • memory/1056-1-0x00000000009F0000-0x0000000000B24000-memory.dmp

      Filesize

      1.2MB