Analysis
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max time kernel
95s -
max time network
102s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
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submitted
15-01-2025 23:37
General
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Target
6ac524fe6c26a64e6d05410faed8a85e6b59d30be07c41a9ec05d7ea03acac81N.exe
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Size
783KB
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MD5
68a6f449fc698f0c11fd6903c53a81e0
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SHA1
6289583e40388b16fd4bf56040e3f1f7e02a2f38
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SHA256
6ac524fe6c26a64e6d05410faed8a85e6b59d30be07c41a9ec05d7ea03acac81
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SHA512
4339a056da6d70cbe9dbe96232c1f264bdc5542e94e9f37a286391e9725aa40a1c75ec2c2787dc94e7012845324aed5facc14585e3c25238c46d3faba0db66cb
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SSDEEP
12288:GqnOYxdAgpoNeF91rg5iFdr0yQ9gYx+EIpakCYJRU7Q9bWoFzqK:G+OQbpbgsFdAyQvzSqaq8q
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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Process spawned unexpected child process 3 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
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UAC bypass 3 TTPs 6 IoCs
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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 3 IoCs
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Checks whether UAC is enabled 1 TTPs 4 IoCs
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Drops file in System32 directory 4 IoCs
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Drops file in Program Files directory 4 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 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 64 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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System policy modification 1 TTPs 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\6ac524fe6c26a64e6d05410faed8a85e6b59d30be07c41a9ec05d7ea03acac81N.exe"C:\Users\Admin\AppData\Local\Temp\6ac524fe6c26a64e6d05410faed8a85e6b59d30be07c41a9ec05d7ea03acac81N.exe"1⤵
- UAC bypass
- Checks computer location settings
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- Drops file in Program Files directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\IsiRi1ISyN.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:\PerfLogs\StartMenuExperienceHost.exe"C:\PerfLogs\StartMenuExperienceHost.exe"3⤵
- UAC bypass
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- System policy modification
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\PerfLogs\StartMenuExperienceHost.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 "taskhostw" /sc ONLOGON /tr "'C:\Windows\System32\SettingsHandlers_Startup\taskhostw.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 "sysmon" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows NT\Accessories\en-US\sysmon.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
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
783KB
MD568a6f449fc698f0c11fd6903c53a81e0
SHA16289583e40388b16fd4bf56040e3f1f7e02a2f38
SHA2566ac524fe6c26a64e6d05410faed8a85e6b59d30be07c41a9ec05d7ea03acac81
SHA5124339a056da6d70cbe9dbe96232c1f264bdc5542e94e9f37a286391e9725aa40a1c75ec2c2787dc94e7012845324aed5facc14585e3c25238c46d3faba0db66cb
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Filesize
203B
MD52efa28a85d2f080ce7c12ce0bc4bb9cc
SHA19cd8002f15ae92dbdef4730073ff3268dba6af00
SHA256db023c6d8babd7e03e1593fbad8e78dbdd222ce93998cbdd24bbae763666401f
SHA512e5e124eef799fc144d3ff0137b5ccb2d24ac9340c7578a9a1b2b59505e1dc741aa94a175030d89d9038788034af9135b98be6c85a552db8a049b68e8510e85df
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Filesize
32KB
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Filesize
64KB
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Filesize
32KB
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Filesize
32KB
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Filesize
32KB
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Filesize
48KB
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Filesize
40KB
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Filesize
40KB
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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
8KB
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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
48KB
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Filesize
32KB
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Filesize
32KB
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Filesize
32KB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
808KB
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Filesize
10.8MB