Analysis

  • max time kernel
    87s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    11-01-2025 06:45

General

  • Target

    b1f5f4c7b4c9919532783142fbd5af48df5768e591a57c08c256125155e01f30.exe

  • Size

    1.5MB

  • MD5

    e6606aa0691b886298e05ae11a4167e2

  • SHA1

    39da4c5f82a23ffd68f3151c9e54f0ea5d7bd076

  • SHA256

    b1f5f4c7b4c9919532783142fbd5af48df5768e591a57c08c256125155e01f30

  • SHA512

    12ae8bc3c473a594b42b85ca6dc2e14f6b287fc126f41c3270a9e278213faf2e333830f95210f7d31fe404800a3b80b463079eea4067d504957f6ec5c681580b

  • SSDEEP

    24576:0NNUtQhWhtqDfDXQdy+N+gfQqRsgFlDRluQ70eJiVbWpRG:EzhWhCXQFN+0IEuQgyiVKu

Malware Config

Signatures

  • DcRat 11 IoCs

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

  • Dcrat family
  • Modifies WinLogon for persistence 2 TTPs 10 IoCs
  • Process spawned unexpected child process 10 IoCs

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

  • UAC bypass 3 TTPs 3 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 11 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 20 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Drops file in System32 directory 32 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 10 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 44 IoCs
  • Suspicious use of AdjustPrivilegeToken 13 IoCs
  • Suspicious use of WriteProcessMemory 36 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\b1f5f4c7b4c9919532783142fbd5af48df5768e591a57c08c256125155e01f30.exe
    "C:\Users\Admin\AppData\Local\Temp\b1f5f4c7b4c9919532783142fbd5af48df5768e591a57c08c256125155e01f30.exe"
    1⤵
    • DcRat
    • Modifies WinLogon for persistence
    • UAC bypass
    • Drops file in Drivers directory
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:2612
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\b1f5f4c7b4c9919532783142fbd5af48df5768e591a57c08c256125155e01f30.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2200
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\PerfLogs\Admin\sppsvc.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:640
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\System32\rasapi32\services.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2192
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\System32\Magnify\services.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2120
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\Windows NT\Accessories\de-DE\taskhost.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2152
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\System32\wbem\wmipcima\WMIADAP.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2148
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\System32\idndl\lsass.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2356
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\System32\PushPrinterConnections\taskhost.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2972
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\System32\PortableDeviceSyncProvider\dwm.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2568
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\System32\dbnetlib\smss.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2984
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\System32\DfsShlEx\lsass.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1628
    • C:\Windows\System32\Magnify\services.exe
      "C:\Windows\System32\Magnify\services.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1212
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\PerfLogs\Admin\sppsvc.exe'" /rl HIGHEST /f
    1⤵
    • DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2176
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Windows\System32\rasapi32\services.exe'" /rl HIGHEST /f
    1⤵
    • DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2808
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Windows\System32\Magnify\services.exe'" /rl HIGHEST /f
    1⤵
    • DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2868
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\Program Files\Windows NT\Accessories\de-DE\taskhost.exe'" /rl HIGHEST /f
    1⤵
    • DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:864
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WMIADAP" /sc ONLOGON /tr "'C:\Windows\System32\wbem\wmipcima\WMIADAP.exe'" /rl HIGHEST /f
    1⤵
    • DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2532
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Windows\System32\idndl\lsass.exe'" /rl HIGHEST /f
    1⤵
    • DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2604
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\Windows\System32\PushPrinterConnections\taskhost.exe'" /rl HIGHEST /f
    1⤵
    • DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3044
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Windows\System32\PortableDeviceSyncProvider\dwm.exe'" /rl HIGHEST /f
    1⤵
    • DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1512
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Windows\System32\dbnetlib\smss.exe'" /rl HIGHEST /f
    1⤵
    • DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1244
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Windows\System32\DfsShlEx\lsass.exe'" /rl HIGHEST /f
    1⤵
    • DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1868

Network

MITRE ATT&CK Enterprise v15

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

    Filesize

    7KB

    MD5

    97bc51e84f802e1e03dc22facb049662

    SHA1

    e686a2ad4782476ccc7471f9a741676a544f918a

    SHA256

    c9e3783e0ef8a6836c388d2969bd90e00f65064a02a120a550f8dcc0d6e2f660

    SHA512

    1eee382334fa7c785c050ba973b11f141913a4cc43a82d30f9cde32c3e9d7bbe6bc8b6dff7d555d6768911cdd8a6ea0bd84ca0d2e36f55b74573706bfff4a65b

  • C:\Windows\System32\Magnify\services.exe

    Filesize

    1.5MB

    MD5

    a064af50f9814c510162ec4013eac053

    SHA1

    78ca05f2bfb7ce038d506c275b5d2c90ebcc6a21

    SHA256

    cbde6e3f3c8737547521280e3f386a1897f740bf86ca682b363f9ade6124f0bf

    SHA512

    89bf806975455b2c42d1d668a10356e08ca625e3edcab96559b0c104ade68a61d739f46d78111d6a1027f14435a9ecc0f7719616cb4ec74e228b32cd3373f5be

  • C:\Windows\System32\wbem\wmipcima\WMIADAP.exe

    Filesize

    1.5MB

    MD5

    e6606aa0691b886298e05ae11a4167e2

    SHA1

    39da4c5f82a23ffd68f3151c9e54f0ea5d7bd076

    SHA256

    b1f5f4c7b4c9919532783142fbd5af48df5768e591a57c08c256125155e01f30

    SHA512

    12ae8bc3c473a594b42b85ca6dc2e14f6b287fc126f41c3270a9e278213faf2e333830f95210f7d31fe404800a3b80b463079eea4067d504957f6ec5c681580b

  • memory/1212-153-0x0000000001200000-0x000000000137E000-memory.dmp

    Filesize

    1.5MB

  • memory/2192-122-0x000000001B670000-0x000000001B952000-memory.dmp

    Filesize

    2.9MB

  • memory/2192-123-0x0000000002710000-0x0000000002718000-memory.dmp

    Filesize

    32KB

  • memory/2612-14-0x0000000000B20000-0x0000000000B2C000-memory.dmp

    Filesize

    48KB

  • memory/2612-17-0x0000000000B50000-0x0000000000B5C000-memory.dmp

    Filesize

    48KB

  • memory/2612-6-0x0000000000610000-0x000000000061A000-memory.dmp

    Filesize

    40KB

  • memory/2612-9-0x00000000005F0000-0x00000000005FC000-memory.dmp

    Filesize

    48KB

  • memory/2612-10-0x0000000000AE0000-0x0000000000AF0000-memory.dmp

    Filesize

    64KB

  • memory/2612-11-0x0000000000AF0000-0x0000000000B00000-memory.dmp

    Filesize

    64KB

  • memory/2612-12-0x0000000000B00000-0x0000000000B08000-memory.dmp

    Filesize

    32KB

  • memory/2612-13-0x0000000000B10000-0x0000000000B1A000-memory.dmp

    Filesize

    40KB

  • memory/2612-0-0x000007FEF56A3000-0x000007FEF56A4000-memory.dmp

    Filesize

    4KB

  • memory/2612-15-0x0000000000B30000-0x0000000000B3A000-memory.dmp

    Filesize

    40KB

  • memory/2612-16-0x0000000000B40000-0x0000000000B48000-memory.dmp

    Filesize

    32KB

  • memory/2612-8-0x0000000000AD0000-0x0000000000AD8000-memory.dmp

    Filesize

    32KB

  • memory/2612-18-0x0000000000B60000-0x0000000000B68000-memory.dmp

    Filesize

    32KB

  • memory/2612-20-0x0000000000B70000-0x0000000000B7C000-memory.dmp

    Filesize

    48KB

  • memory/2612-21-0x0000000000B80000-0x0000000000B88000-memory.dmp

    Filesize

    32KB

  • memory/2612-24-0x000007FEF56A0000-0x000007FEF608C000-memory.dmp

    Filesize

    9.9MB

  • memory/2612-7-0x0000000000AC0000-0x0000000000ACC000-memory.dmp

    Filesize

    48KB

  • memory/2612-5-0x0000000000600000-0x000000000060C000-memory.dmp

    Filesize

    48KB

  • memory/2612-4-0x00000000005D0000-0x00000000005E2000-memory.dmp

    Filesize

    72KB

  • memory/2612-3-0x0000000000440000-0x0000000000448000-memory.dmp

    Filesize

    32KB

  • memory/2612-2-0x000007FEF56A0000-0x000007FEF608C000-memory.dmp

    Filesize

    9.9MB

  • memory/2612-1-0x00000000011B0000-0x000000000132E000-memory.dmp

    Filesize

    1.5MB

  • memory/2612-174-0x000007FEF56A0000-0x000007FEF608C000-memory.dmp

    Filesize

    9.9MB