Analysis
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max time kernel
79s -
max time network
16s -
platform
windows7_x64 -
resource
win7-20240903-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 4 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
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UAC bypass 3 TTPs 3 IoCs
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DCRat payload 2 IoCs
Detects payload of DCRat, commonly dropped by NSIS installers.
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Executes dropped EXE 1 IoCs
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Adds Run key to start application 2 TTPs 4 IoCs
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Checks whether UAC is enabled 1 TTPs 2 IoCs
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Drops file in System32 directory 12 IoCs
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Drops file in Windows 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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Scheduled Task/Job: Scheduled Task 1 TTPs 4 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 3 IoCs
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System policy modification 1 TTPs 3 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
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Users\Admin\AppData\Local\Temp\6ac524fe6c26a64e6d05410faed8a85e6b59d30be07c41a9ec05d7ea03acac81N.exe"C:\Users\Admin\AppData\Local\Temp\6ac524fe6c26a64e6d05410faed8a85e6b59d30be07c41a9ec05d7ea03acac81N.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Windows\System32\DFDWiz\lsass.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 "WMIADAP" /sc ONLOGON /tr "'C:\Windows\System32\wbem\wmpnetwk\WMIADAP.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 "explorer" /sc ONLOGON /tr "'C:\Windows\twain_32\explorer.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 "winlogon" /sc ONLOGON /tr "'C:\Windows\System32\fveapi\winlogon.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
32KB
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Filesize
9.9MB
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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
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
9.9MB
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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
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Filesize
32KB
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Filesize
48KB
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Filesize
32KB
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Filesize
9.9MB
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Filesize
808KB
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Filesize
9.9MB
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Filesize
9.9MB
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Filesize
4KB