Analysis
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max time kernel
95s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
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submitted
13-11-2024 10:02
General
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Target
ad4072aa43c0fcac0cc0c5f86147c93fb16707a547d7760407a02be06bf9d8f0.exe
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Size
1.1MB
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MD5
119ede06afc1b721278e8955fe8338f4
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SHA1
3917c6cfd13689a83e8410c157f54c0e05550bcf
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SHA256
ad4072aa43c0fcac0cc0c5f86147c93fb16707a547d7760407a02be06bf9d8f0
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SHA512
72193ded81941ecef91da566d47e22667e98d927a18cbe06be3e4cbea6c1504664a7569fd9531ddbf1b4b019a953e53deb8da34938d1b879b4d74902eff3be78
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SSDEEP
24576:AMYPCI+q+U4cIG409ozWucypk1Nd4AX+iB/YjuM6kyh+:ABPZ0Kr1FXHB/guM6k+
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 3 IoCs
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Process spawned unexpected child process 9 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 6 IoCs
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Drops file in Program Files directory 2 IoCs
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Drops file in Windows directory 3 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 1 IoCs
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Scheduled Task/Job: Scheduled Task 1 TTPs 9 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 12 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of WriteProcessMemory 6 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\ad4072aa43c0fcac0cc0c5f86147c93fb16707a547d7760407a02be06bf9d8f0.exe"C:\Users\Admin\AppData\Local\Temp\ad4072aa43c0fcac0cc0c5f86147c93fb16707a547d7760407a02be06bf9d8f0.exe"1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- 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
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\iFiW8NNKA9.bat"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\w32tm.exew32tm /stripchart /computer:localhost /period:5 /dataonly /samples:23⤵
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C:\Windows\Downloaded Program Files\SearchApp.exe"C:\Windows\Downloaded Program Files\SearchApp.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 7 /tr "'C:\Windows\Downloaded Program Files\SearchApp.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Windows\Downloaded Program Files\SearchApp.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 "SearchAppS" /sc MINUTE /mo 13 /tr "'C:\Windows\Downloaded Program Files\SearchApp.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 "unsecappu" /sc MINUTE /mo 13 /tr "'C:\Program Files\Uninstall Information\unsecapp.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\Program Files\Uninstall Information\unsecapp.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 "unsecappu" /sc MINUTE /mo 6 /tr "'C:\Program Files\Uninstall Information\unsecapp.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 "upfcu" /sc MINUTE /mo 11 /tr "'C:\Users\All Users\upfc.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "upfc" /sc ONLOGON /tr "'C:\Users\All Users\upfc.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 "upfcu" /sc MINUTE /mo 7 /tr "'C:\Users\All Users\upfc.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
214B
MD59814ef4d0acc14c91e68ee9cab7fb99b
SHA19089836812a9319aecfc524e059fa37035caba96
SHA2562db1dc5f4214c11d15b5c34a4c58b39c148e06ea79772d2b7578849a66cd7378
SHA512d63d82105b858d4b5dd23b51dc710c9ed4d1a37fd64d143d68571978fbb08cd8f0dac137c654ffee6be2995c44ebe71653f6e23e9c9cad479b9b3196dbae8baf
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Filesize
1.1MB
MD5119ede06afc1b721278e8955fe8338f4
SHA13917c6cfd13689a83e8410c157f54c0e05550bcf
SHA256ad4072aa43c0fcac0cc0c5f86147c93fb16707a547d7760407a02be06bf9d8f0
SHA51272193ded81941ecef91da566d47e22667e98d927a18cbe06be3e4cbea6c1504664a7569fd9531ddbf1b4b019a953e53deb8da34938d1b879b4d74902eff3be78
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Filesize
72KB
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Filesize
56KB
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Filesize
72KB
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Filesize
320KB
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Filesize
8KB
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Filesize
32KB
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Filesize
5.2MB
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Filesize
10.8MB
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Filesize
112KB
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Filesize
10.8MB
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Filesize
1.2MB