Analysis
-
max time kernel
95s -
max time network
100s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
-
submitted
24-11-2024 03:55
General
-
Target
26c26f312d1586930f15ed4d2be8a9a6728e79d37b571088443fd142d121a63e.exe
-
Size
2.9MB
-
MD5
19aefa5703872789a85c9c8e7c123aca
-
SHA1
5207463f1ec2987e68c97399571c4ef52763bacc
-
SHA256
26c26f312d1586930f15ed4d2be8a9a6728e79d37b571088443fd142d121a63e
-
SHA512
5117be7adb0b42505ce453a3f6e3cb73ed5b71c186ff660d7cceb92b11ab89bbf897f48a3a05d19e63fe69361bc58276c99b1d93eb3173c01f379a11b0850c70
-
SSDEEP
49152:7wefjxPCEjdphA8ZLUj+khAHYevjm7rDeqYQjmCYi78jFg:7zqCA85UuHYeLu0PCYi78a
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 13 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
-
DCRat payload 9 IoCs
Detects payload of DCRat, commonly dropped by NSIS installers.
-
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 3 IoCs
-
Checks BIOS information in registry 2 TTPs 6 IoCs
BIOS information is often read in order to detect sandboxing environments.
-
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
-
Executes dropped EXE 1 IoCs
-
Identifies Wine through registry keys 2 TTPs 3 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
-
Adds Run key to start application 2 TTPs 13 IoCs
-
Drops file in System32 directory 16 IoCs
-
Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
-
Drops file in Program Files directory 4 IoCs
-
Drops file in Windows directory 5 IoCs
-
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
-
Scheduled Task/Job: Scheduled Task 1 TTPs 13 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
-
Suspicious behavior: EnumeratesProcesses 15 IoCs
-
Suspicious use of AdjustPrivilegeToken 3 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\26c26f312d1586930f15ed4d2be8a9a6728e79d37b571088443fd142d121a63e.exe"C:\Users\Admin\AppData\Local\Temp\26c26f312d1586930f15ed4d2be8a9a6728e79d37b571088443fd142d121a63e.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Identifies Wine through registry keys
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\26c26f312d1586930f15ed4d2be8a9a6728e79d37b571088443fd142d121a63e.exe"C:\Users\Admin\AppData\Local\Temp\26c26f312d1586930f15ed4d2be8a9a6728e79d37b571088443fd142d121a63e.exe"2⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Identifies Wine through registry keys
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\ProgramData\Templates\WmiPrvSE.exe"C:\ProgramData\Templates\WmiPrvSE.exe"3⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Windows\System32\mciwave\dllhost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\Windows\System32\wmdmps\conhost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Windows\appcompat\taskhostw.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\Program Files\Windows Portable Devices\OfficeClickToRun.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Windows\System32\KBDCZ2\spoolsv.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Windows\System32\KBDBE\fontdrvhost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Windows\System32\mfc100chs\dwm.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "26c26f312d1586930f15ed4d2be8a9a6728e79d37b571088443fd142d121a63e" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Local\Temp\Microsoft_Windows_Desktop_Runtime_-_7.0.16_(x64)_20241007091301_001_dotnet_hostfxr_7.0.16_win_x64.msi\26c26f312d1586930f15ed4d2be8a9a6728e79d37b571088443fd142d121a63e.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Windows\System32\RegCtrl\fontdrvhost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.de-de\OfficeClickToRun.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\ProgramData\Templates\WmiPrvSE.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Windows\System32\mssph\taskhostw.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Windows\RemotePackages\RemoteDesktops\services.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
1KB
MD5f5e93a467b0f78f860ff2ba798c5fd2c
SHA1462b6677af76647b0c08fe91d019cb29d364f616
SHA256fa2d2b185ce7cfa214b0c9a8b26c9d30ac325c924434f957c2f3e0bb74a749cf
SHA512b50b1a0aeff65a77574897654ace4a3b518e5f9192c74e516c84ff6796e52ad811c23caa1ac7d52449601a1004c9cc3a734c3a10a94d67750eb771ca0a7f2e25
-
Filesize
2.9MB
MD519aefa5703872789a85c9c8e7c123aca
SHA15207463f1ec2987e68c97399571c4ef52763bacc
SHA25626c26f312d1586930f15ed4d2be8a9a6728e79d37b571088443fd142d121a63e
SHA5125117be7adb0b42505ce453a3f6e3cb73ed5b71c186ff660d7cceb92b11ab89bbf897f48a3a05d19e63fe69361bc58276c99b1d93eb3173c01f379a11b0850c70
-
Filesize
6.3MB
-
Filesize
6.3MB
-
Filesize
6.3MB
-
Filesize
6.3MB
-
Filesize
6.3MB
-
Filesize
408KB
-
Filesize
6.3MB
-
Filesize
624KB
-
Filesize
5.6MB
-
Filesize
6.3MB
-
Filesize
6.3MB
-
Filesize
6.3MB
-
Filesize
6.3MB
-
Filesize
6.3MB
-
Filesize
56KB
-
Filesize
6.3MB