Analysis
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max time kernel
149s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
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submitted
10-01-2025 07:31
General
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Target
JaffaCakes118_de80b75daf9e3549c0d61166fbe0f147.exe
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Size
2.0MB
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MD5
de80b75daf9e3549c0d61166fbe0f147
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SHA1
445c7a4e543c319dff09d12b77b9aa33bfccc5ff
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SHA256
7a89d7167264d77656b8cac1cef82a3e16f3dd51d679b178833a953a5cb11235
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SHA512
83f8b92ef215e0398ee38963bcedce1590384b0f1a8f17cb09749c887c78ede374890965a01cb475ac0794a4eafb5ac7c0b48e347a6df7eda58b2fe1cbe657d1
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SSDEEP
49152:cwj3o71JZAB3jBn8cjcdPH/+yDMu3JgHzCueUTG:cBLZABTF8Ic94u3YveX
Malware Config
Signatures
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DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
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Dcrat family
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Modifies WinLogon for persistence 2 TTPs 6 IoCs
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Process spawned unexpected child process 6 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
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DCRat payload 2 IoCs
Detects payload of DCRat, commonly dropped by NSIS installers.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE 1 IoCs
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Adds Run key to start application 2 TTPs 12 IoCs
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Drops file in System32 directory 9 IoCs
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Drops file in Windows directory 2 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Scheduled Task/Job: Scheduled Task 1 TTPs 6 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 7 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of WriteProcessMemory 2 IoCs
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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
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C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_de80b75daf9e3549c0d61166fbe0f147.exe"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_de80b75daf9e3549c0d61166fbe0f147.exe"1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\bdeui\spoolsv.exe"C:\Windows\System32\bdeui\spoolsv.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Windows\System32\bdeui\spoolsv.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Windows\System32\imapi\dwm.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Windows\System32\gb2312\fontdrvhost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Windows\System32\FXST30\spoolsv.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\ProgramData\SoftwareDistribution\backgroundTaskHost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost\StartMenuExperienceHost.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
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2.0MB
MD5de80b75daf9e3549c0d61166fbe0f147
SHA1445c7a4e543c319dff09d12b77b9aa33bfccc5ff
SHA2567a89d7167264d77656b8cac1cef82a3e16f3dd51d679b178833a953a5cb11235
SHA51283f8b92ef215e0398ee38963bcedce1590384b0f1a8f17cb09749c887c78ede374890965a01cb475ac0794a4eafb5ac7c0b48e347a6df7eda58b2fe1cbe657d1
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Filesize
8KB
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Filesize
2.1MB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
32KB
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Filesize
48KB
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Filesize
344KB
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Filesize
32KB
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Filesize
48KB
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Filesize
32KB
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Filesize
32KB
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Filesize
32KB
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Filesize
32KB
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Filesize
32KB