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
    11-12-2024 08:59

General

  • Target

    88F34405800FD589303DD080CB702BF0.exe

  • Size

    2.7MB

  • MD5

    88f34405800fd589303dd080cb702bf0

  • SHA1

    ff0464ed91e346e4a28c66e46b521916daacb839

  • SHA256

    3490a06a34fbdc0f9d3ae55ff159fe407bf962f67b56bde78a9ad0bb312a1610

  • SHA512

    430178b4579e748fb0581090d1a96e3acd234b4d4575a0914f9e083b64ede5351fe929413100b05fa298a4172305ec8cb79c82a53acd849365e165195d1c4765

  • SSDEEP

    49152:kJloZITX1N8fHQxECPA8Wpd9MNZesZb6EIAZwgZILA:kJloSTX1yPQxv0tMNIC6K1Kk

Score
10/10

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 33 IoCs

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

  • 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
  • Drops file in Program Files directory 8 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 33 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 52 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 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\88F34405800FD589303DD080CB702BF0.exe
    "C:\Users\Admin\AppData\Local\Temp\88F34405800FD589303DD080CB702BF0.exe"
    1⤵
    • Checks computer location settings
    • 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
    PID:4440
    • 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:2120
      • C:\Windows\system32\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:3220
        • C:\Program Files\7-Zip\Lang\RuntimeBroker.exe
          "C:\Program Files\7-Zip\Lang\RuntimeBroker.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4092
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "88F34405800FD589303DD080CB702BF08" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\88F34405800FD589303DD080CB702BF0.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2768
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "88F34405800FD589303DD080CB702BF0" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\88F34405800FD589303DD080CB702BF0.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:912
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "88F34405800FD589303DD080CB702BF08" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\88F34405800FD589303DD080CB702BF0.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3040
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 6 /tr "'C:\Program Files\dotnet\swidtag\sysmon.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4844
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Program Files\dotnet\swidtag\sysmon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3644
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 13 /tr "'C:\Program Files\dotnet\swidtag\sysmon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1148
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 10 /tr "'C:\Windows\TAPI\System.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2920
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Windows\TAPI\System.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:372
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 5 /tr "'C:\Windows\TAPI\System.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2756
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 14 /tr "'C:\Program Files\7-Zip\Lang\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3596
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files\7-Zip\Lang\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4000
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 8 /tr "'C:\Program Files\7-Zip\Lang\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2116
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 5 /tr "'C:\Windows\tracing\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3592
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\tracing\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4900
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 11 /tr "'C:\Windows\tracing\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3624
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 11 /tr "'C:\Windows\Setup\State\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2984
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\Setup\State\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4520
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 9 /tr "'C:\Windows\Setup\State\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3620
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 10 /tr "'C:\Windows\Media\Quirky\sihost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3588
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sihost" /sc ONLOGON /tr "'C:\Windows\Media\Quirky\sihost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4816
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 9 /tr "'C:\Windows\Media\Quirky\sihost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5008
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 12 /tr "'C:\Program Files\Java\jre-1.8\bin\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3520
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files\Java\jre-1.8\bin\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1468
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 8 /tr "'C:\Program Files\Java\jre-1.8\bin\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4800
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 8 /tr "'C:\Users\Default\upfc.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:376
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "upfc" /sc ONLOGON /tr "'C:\Users\Default\upfc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3764
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 14 /tr "'C:\Users\Default\upfc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3532
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 14 /tr "'C:\Windows\ImmersiveControlPanel\Registry.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2276
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Registry" /sc ONLOGON /tr "'C:\Windows\ImmersiveControlPanel\Registry.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2112
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 12 /tr "'C:\Windows\ImmersiveControlPanel\Registry.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1932
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 12 /tr "'C:\Program Files\Windows Portable Devices\Idle.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2476
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files\Windows Portable Devices\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3540
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 7 /tr "'C:\Program Files\Windows Portable Devices\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4388

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      210B

      MD5

      b08a091fef32ca07b1b0300b936ebd69

      SHA1

      7df1d43f3b970bb335abd26cae857ad3942379fb

      SHA256

      e223bf505bb3df5c2ee7f3fe73c7f1170107c4fcd9114795d89f2c8ace68a035

      SHA512

      2691681e10dfd181394ab9d8f6b20c65b4c1c49b3a0e503f9771864c7cdf8adad58b0042c8951b274e72d7b213d1283bf7593330d6bcffc93a1710f9ef2a2f57

    • C:\Windows\tracing\RuntimeBroker.exe

      Filesize

      2.7MB

      MD5

      88f34405800fd589303dd080cb702bf0

      SHA1

      ff0464ed91e346e4a28c66e46b521916daacb839

      SHA256

      3490a06a34fbdc0f9d3ae55ff159fe407bf962f67b56bde78a9ad0bb312a1610

      SHA512

      430178b4579e748fb0581090d1a96e3acd234b4d4575a0914f9e083b64ede5351fe929413100b05fa298a4172305ec8cb79c82a53acd849365e165195d1c4765

    • memory/4440-12-0x000000001BFC0000-0x000000001BFCC000-memory.dmp

      Filesize

      48KB

    • memory/4440-1-0x00000000009C0000-0x0000000000C80000-memory.dmp

      Filesize

      2.8MB

    • memory/4440-0-0x00007FFEEB9B3000-0x00007FFEEB9B5000-memory.dmp

      Filesize

      8KB

    • memory/4440-5-0x000000001BF20000-0x000000001BF70000-memory.dmp

      Filesize

      320KB

    • memory/4440-6-0x0000000002D00000-0x0000000002D08000-memory.dmp

      Filesize

      32KB

    • memory/4440-8-0x000000001BEE0000-0x000000001BEF6000-memory.dmp

      Filesize

      88KB

    • memory/4440-9-0x000000001BF00000-0x000000001BF08000-memory.dmp

      Filesize

      32KB

    • memory/4440-10-0x000000001BF70000-0x000000001BFC6000-memory.dmp

      Filesize

      344KB

    • memory/4440-7-0x000000001BED0000-0x000000001BEE0000-memory.dmp

      Filesize

      64KB

    • memory/4440-14-0x000000001C530000-0x000000001CA58000-memory.dmp

      Filesize

      5.2MB

    • memory/4440-4-0x0000000002D80000-0x0000000002D9C000-memory.dmp

      Filesize

      112KB

    • memory/4440-3-0x0000000002CF0000-0x0000000002CFE000-memory.dmp

      Filesize

      56KB

    • memory/4440-11-0x000000001BF10000-0x000000001BF18000-memory.dmp

      Filesize

      32KB

    • memory/4440-16-0x000000001C010000-0x000000001C01C000-memory.dmp

      Filesize

      48KB

    • memory/4440-15-0x000000001C000000-0x000000001C008000-memory.dmp

      Filesize

      32KB

    • memory/4440-17-0x000000001C120000-0x000000001C12C000-memory.dmp

      Filesize

      48KB

    • memory/4440-19-0x000000001C140000-0x000000001C14C000-memory.dmp

      Filesize

      48KB

    • memory/4440-18-0x000000001C130000-0x000000001C13E000-memory.dmp

      Filesize

      56KB

    • memory/4440-21-0x000000001C260000-0x000000001C26C000-memory.dmp

      Filesize

      48KB

    • memory/4440-20-0x000000001C250000-0x000000001C25A000-memory.dmp

      Filesize

      40KB

    • memory/4440-2-0x00007FFEEB9B0000-0x00007FFEEC471000-memory.dmp

      Filesize

      10.8MB

    • memory/4440-49-0x00007FFEEB9B0000-0x00007FFEEC471000-memory.dmp

      Filesize

      10.8MB

    • memory/4440-13-0x000000001BFD0000-0x000000001BFE2000-memory.dmp

      Filesize

      72KB