Windows 7 deprecation

Windows 7 will be removed from tria.ge on 2025-03-31

Analysis

  • max time kernel
    94s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/01/2025, 23:26

General

  • Target

    3cbf0de4a009f792d15a2cdc4c31f46ee3de539493849ccc31cde03ec2d2ffdd.exe

  • Size

    783KB

  • MD5

    ed7cbc3cc36f96754bf4b4748c5998b6

  • SHA1

    ae7867de6dc05871e3e4e7d34c0231383e416dd1

  • SHA256

    3cbf0de4a009f792d15a2cdc4c31f46ee3de539493849ccc31cde03ec2d2ffdd

  • SHA512

    eac51f170a344feb0958733eaa6c6ee80b4934f1e70270f932e3593ce572d899bbe9d18e3075c394437d452a30f0341d12da8dc78080da8b93ebc08f458e4744

  • SSDEEP

    12288:GqnOYxdAgpoNeF91rg5iFdr0yQ9gYx+EIpakCYJRU7Q9bWoFzqK:G+OQbpbgsFdAyQvzSqaq8q

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 8 IoCs

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

  • UAC bypass 3 TTPs 3 IoCs
  • DCRat payload 2 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 8 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Drops file in System32 directory 12 IoCs
  • Drops file in Program Files directory 12 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 8 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • System policy modification 1 TTPs 3 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\3cbf0de4a009f792d15a2cdc4c31f46ee3de539493849ccc31cde03ec2d2ffdd.exe
    "C:\Users\Admin\AppData\Local\Temp\3cbf0de4a009f792d15a2cdc4c31f46ee3de539493849ccc31cde03ec2d2ffdd.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 Program Files directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:3088
    • C:\Windows\System32\activeds\lsass.exe
      "C:\Windows\System32\activeds\lsass.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:736
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows\System32\mfc110jpn\winlogon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1156
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "TextInputHost" /sc ONLOGON /tr "'C:\Documents and Settings\TextInputHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4768
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft.NET\RedistList\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2028
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Mail\smss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2080
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Windows\System32\activeds\lsass.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3932
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Program Files (x86)\WindowsPowerShell\Modules\PackageManagement\1.0.0.1\es\StartMenuExperienceHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3852
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows\System32\ucrtbase\winlogon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3068
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "3cbf0de4a009f792d15a2cdc4c31f46ee3de539493849ccc31cde03ec2d2ffdd" /sc ONLOGON /tr "'C:\Documents and Settings\3cbf0de4a009f792d15a2cdc4c31f46ee3de539493849ccc31cde03ec2d2ffdd.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4480

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Windows\System32\activeds\lsass.exe

    Filesize

    783KB

    MD5

    ed7cbc3cc36f96754bf4b4748c5998b6

    SHA1

    ae7867de6dc05871e3e4e7d34c0231383e416dd1

    SHA256

    3cbf0de4a009f792d15a2cdc4c31f46ee3de539493849ccc31cde03ec2d2ffdd

    SHA512

    eac51f170a344feb0958733eaa6c6ee80b4934f1e70270f932e3593ce572d899bbe9d18e3075c394437d452a30f0341d12da8dc78080da8b93ebc08f458e4744

  • memory/3088-17-0x000000001B6A0000-0x000000001B6A8000-memory.dmp

    Filesize

    32KB

  • memory/3088-1-0x0000000000AD0000-0x0000000000B9A000-memory.dmp

    Filesize

    808KB

  • memory/3088-3-0x0000000002D00000-0x0000000002D08000-memory.dmp

    Filesize

    32KB

  • memory/3088-5-0x0000000002D30000-0x0000000002D40000-memory.dmp

    Filesize

    64KB

  • memory/3088-7-0x0000000002D50000-0x0000000002D5C000-memory.dmp

    Filesize

    48KB

  • memory/3088-6-0x0000000002D40000-0x0000000002D48000-memory.dmp

    Filesize

    32KB

  • memory/3088-4-0x0000000002D10000-0x0000000002D18000-memory.dmp

    Filesize

    32KB

  • memory/3088-8-0x0000000002D90000-0x0000000002D9A000-memory.dmp

    Filesize

    40KB

  • memory/3088-9-0x0000000002DA0000-0x0000000002DAA000-memory.dmp

    Filesize

    40KB

  • memory/3088-10-0x0000000002D70000-0x0000000002D78000-memory.dmp

    Filesize

    32KB

  • memory/3088-13-0x000000001B6E0000-0x000000001B6E8000-memory.dmp

    Filesize

    32KB

  • memory/3088-16-0x0000000002D80000-0x0000000002D88000-memory.dmp

    Filesize

    32KB

  • memory/3088-2-0x00007FFE71FB0000-0x00007FFE72A71000-memory.dmp

    Filesize

    10.8MB

  • memory/3088-18-0x000000001B6B0000-0x000000001B6B8000-memory.dmp

    Filesize

    32KB

  • memory/3088-15-0x0000000002D60000-0x0000000002D68000-memory.dmp

    Filesize

    32KB

  • memory/3088-14-0x000000001B720000-0x000000001B728000-memory.dmp

    Filesize

    32KB

  • memory/3088-12-0x000000001B6C0000-0x000000001B6C8000-memory.dmp

    Filesize

    32KB

  • memory/3088-20-0x000000001B6F0000-0x000000001B6F8000-memory.dmp

    Filesize

    32KB

  • memory/3088-22-0x000000001B710000-0x000000001B718000-memory.dmp

    Filesize

    32KB

  • memory/3088-21-0x000000001B700000-0x000000001B70C000-memory.dmp

    Filesize

    48KB

  • memory/3088-19-0x000000001B6D0000-0x000000001B6D8000-memory.dmp

    Filesize

    32KB

  • memory/3088-11-0x0000000002DB0000-0x0000000002DB8000-memory.dmp

    Filesize

    32KB

  • memory/3088-25-0x00007FFE71FB0000-0x00007FFE72A71000-memory.dmp

    Filesize

    10.8MB

  • memory/3088-26-0x00007FFE71FB0000-0x00007FFE72A71000-memory.dmp

    Filesize

    10.8MB

  • memory/3088-0-0x00007FFE71FB3000-0x00007FFE71FB5000-memory.dmp

    Filesize

    8KB

  • memory/3088-44-0x00007FFE71FB0000-0x00007FFE72A71000-memory.dmp

    Filesize

    10.8MB

  • memory/3088-156-0x00007FFE71FB0000-0x00007FFE72A71000-memory.dmp

    Filesize

    10.8MB