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Analysis

  • max time kernel
    149s
  • 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
    17/01/2025, 07:31

General

  • Target

    0f9e8c0ca92989e50a62c5ea1e47eb74.exe

  • Size

    2.7MB

  • MD5

    0f9e8c0ca92989e50a62c5ea1e47eb74

  • SHA1

    6076489eb7df53fe1116b3dfd0ff5d87cdfeb3d6

  • SHA256

    524eadc0b5758167ac92dbfbf5b6119abefe8648eaf3c1171ab8a227d3720611

  • SHA512

    8819dc1e48e2343d29ee0420a598ee4e062a19b36190af80a204f08a28cde1e3cbe097d438566d1b12cf3d37f1afb889060fb9b141840de1d005be5087302970

  • SSDEEP

    49152:yqyJUSQelMhlk1w19BlUobhENGZXxRWi0UAuqYqqnc:PyJlQgGk1wPko1oO30UA7Yqq

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 21 IoCs

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

  • UAC bypass 3 TTPs 6 IoCs
  • DCRat payload 4 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
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 15 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 21 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\0f9e8c0ca92989e50a62c5ea1e47eb74.exe
    "C:\Users\Admin\AppData\Local\Temp\0f9e8c0ca92989e50a62c5ea1e47eb74.exe"
    1⤵
    • UAC bypass
    • Checks computer location settings
    • Checks whether UAC is enabled
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:3396
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\Xsfud8LVuy.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:532
      • C:\Windows\system32\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:4440
        • C:\Windows\Containers\serviced\StartMenuExperienceHost.exe
          "C:\Windows\Containers\serviced\StartMenuExperienceHost.exe"
          3⤵
          • UAC bypass
          • Executes dropped EXE
          • Checks whether UAC is enabled
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • System policy modification
          PID:3372
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 14 /tr "'C:\Windows\Downloaded Program Files\sysmon.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3688
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Windows\Downloaded Program Files\sysmon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1892
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 10 /tr "'C:\Windows\Downloaded Program Files\sysmon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2040
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 9 /tr "'C:\Windows\ja-JP\upfc.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4712
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "upfc" /sc ONLOGON /tr "'C:\Windows\ja-JP\upfc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1556
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 13 /tr "'C:\Windows\ja-JP\upfc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2316
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 5 /tr "'C:\Windows\Containers\serviced\StartMenuExperienceHost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4208
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Windows\Containers\serviced\StartMenuExperienceHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:684
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 7 /tr "'C:\Windows\Containers\serviced\StartMenuExperienceHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4764
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 14 /tr "'C:\Program Files\Java\jdk-1.8\bin\lsass.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3404
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Program Files\Java\jdk-1.8\bin\lsass.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4648
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 5 /tr "'C:\Program Files\Java\jdk-1.8\bin\lsass.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2864
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 10 /tr "'C:\Program Files\Java\jdk-1.8\sppsvc.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1564
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Program Files\Java\jdk-1.8\sppsvc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1552
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 14 /tr "'C:\Program Files\Java\jdk-1.8\sppsvc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1312
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 7 /tr "'C:\Users\Default\Downloads\dwm.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3172
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Users\Default\Downloads\dwm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3808
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 9 /tr "'C:\Users\Default\Downloads\dwm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1808
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Windows NT\TableTextService\en-US\sysmon.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4008
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows NT\TableTextService\en-US\sysmon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3464
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Windows NT\TableTextService\en-US\sysmon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1612

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Program Files (x86)\Windows NT\TableTextService\en-US\sysmon.exe

      Filesize

      2.7MB

      MD5

      80b32b9cee6269c5b10154bbbf7e7f87

      SHA1

      a51ebf8caa9ff961160b5ca9fdc84c7593d5b557

      SHA256

      af02e4a4c49d17f511fb1b52a14650448cc66861a018d28aba7d0216b7bf5527

      SHA512

      1affb108727b90f03d2dc41c0a620d97341b0727cb5df442adbb3671e449bdfc4d9cd6cf0545f3b9ee3937dc5b6f6c38ce1c7ed5738ee44c29ad6dffede65717

    • C:\Program Files\Java\jdk-1.8\sppsvc.exe

      Filesize

      2.7MB

      MD5

      0f9e8c0ca92989e50a62c5ea1e47eb74

      SHA1

      6076489eb7df53fe1116b3dfd0ff5d87cdfeb3d6

      SHA256

      524eadc0b5758167ac92dbfbf5b6119abefe8648eaf3c1171ab8a227d3720611

      SHA512

      8819dc1e48e2343d29ee0420a598ee4e062a19b36190af80a204f08a28cde1e3cbe097d438566d1b12cf3d37f1afb889060fb9b141840de1d005be5087302970

    • C:\Program Files\Java\jdk-1.8\sppsvc.exe

      Filesize

      2.7MB

      MD5

      6331ee6637268e8737e8fa5e2f5cae96

      SHA1

      d767d24beaf81bd9967ca0476b91951a35b3904c

      SHA256

      eb943cc4f4eb1db55b3a1a7c6340ccb283886652bc869ebc43d7749d8276e30d

      SHA512

      fe7493bd7cee0af2def03168b6438ec3dc6a0bd44d63a0df9ca66d2607345aa79f255093ff3841fcf92c45b00f51157eab8f3a6c13f7909aa4bf8e254d7991ae

    • C:\Users\Admin\AppData\Local\Temp\Xsfud8LVuy.bat

      Filesize

      223B

      MD5

      e7e4c06b245197ef9dc96373fef66f74

      SHA1

      25a60649e62978576bf06d3d44fc31e952ee7c62

      SHA256

      33e0d791760bc18f860dba8ac9456d19b00152f7423aa3dff270f2de5cf56b87

      SHA512

      6617a0870462595db1c1fd3bbd81831a6f93a3cea80f3e0da805f2ef405848de3b311bd9a6bd8927e5b6e36b029b9a812ce1494b756d296098775f43177da86e

    • memory/3396-12-0x000000001BA30000-0x000000001BA38000-memory.dmp

      Filesize

      32KB

    • memory/3396-17-0x000000001BC40000-0x000000001BC4C000-memory.dmp

      Filesize

      48KB

    • memory/3396-9-0x000000001BA20000-0x000000001BA28000-memory.dmp

      Filesize

      32KB

    • memory/3396-8-0x000000001BA00000-0x000000001BA16000-memory.dmp

      Filesize

      88KB

    • memory/3396-7-0x000000001B3A0000-0x000000001B3B0000-memory.dmp

      Filesize

      64KB

    • memory/3396-10-0x000000001BA40000-0x000000001BA4A000-memory.dmp

      Filesize

      40KB

    • memory/3396-6-0x00000000010E0000-0x00000000010E8000-memory.dmp

      Filesize

      32KB

    • memory/3396-11-0x000000001BAA0000-0x000000001BAF6000-memory.dmp

      Filesize

      344KB

    • memory/3396-0-0x00007FFD6F323000-0x00007FFD6F325000-memory.dmp

      Filesize

      8KB

    • memory/3396-13-0x000000001BAF0000-0x000000001BB02000-memory.dmp

      Filesize

      72KB

    • memory/3396-14-0x000000001C050000-0x000000001C578000-memory.dmp

      Filesize

      5.2MB

    • memory/3396-5-0x000000001BA50000-0x000000001BAA0000-memory.dmp

      Filesize

      320KB

    • memory/3396-16-0x000000001BB30000-0x000000001BB38000-memory.dmp

      Filesize

      32KB

    • memory/3396-19-0x000000001BB50000-0x000000001BB5C000-memory.dmp

      Filesize

      48KB

    • memory/3396-18-0x000000001BB40000-0x000000001BB4E000-memory.dmp

      Filesize

      56KB

    • memory/3396-15-0x000000001BB20000-0x000000001BB28000-memory.dmp

      Filesize

      32KB

    • memory/3396-20-0x000000001BB60000-0x000000001BB6A000-memory.dmp

      Filesize

      40KB

    • memory/3396-21-0x000000001BB70000-0x000000001BB7C000-memory.dmp

      Filesize

      48KB

    • memory/3396-4-0x000000001B380000-0x000000001B39C000-memory.dmp

      Filesize

      112KB

    • memory/3396-3-0x00000000010D0000-0x00000000010DE000-memory.dmp

      Filesize

      56KB

    • memory/3396-2-0x00007FFD6F320000-0x00007FFD6FDE1000-memory.dmp

      Filesize

      10.8MB

    • memory/3396-128-0x00007FFD6F320000-0x00007FFD6FDE1000-memory.dmp

      Filesize

      10.8MB

    • memory/3396-1-0x00000000004E0000-0x0000000000794000-memory.dmp

      Filesize

      2.7MB