Analysis
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max time kernel
18s -
max time network
17s -
platform
windows7_x64 -
resource
win7-20240708-en -
resource tags
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submitted
25-07-2024 04:08
General
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Target
6d88a5462b28fd339bc3d85d60c1a340N.exe
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Size
1.5MB
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MD5
6d88a5462b28fd339bc3d85d60c1a340
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SHA1
58116f47109092bd855cefa90820ee8e5fdd1346
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SHA256
1f9e61c82cd02f8cb6780816776425413962b725ad18078c3e905af5484db607
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SHA512
a69a83ab46f7842ae71335d98dbdaab7c94fbdaf977d7113370bcfebb59dae30fb1a1238a72587f4931cc1987b09fca493b51c11a6488068d46e8c75ce184353
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SSDEEP
24576:EU5vvCDsOPh09mqwTbgh6OATBjqh2y58fRbkTHn8zH3fFPciPHv+TiE9+4:1CemoYOqoylkTcj9EiPH9F
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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Process spawned unexpected child process 5 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 3 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 5 IoCs
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Checks whether UAC is enabled 1 TTPs 4 IoCs
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Drops file in System32 directory 8 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 system certificate store 2 TTPs 2 IoCs
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Scheduled Task/Job: Scheduled Task 1 TTPs 5 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 21 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of WriteProcessMemory 9 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\6d88a5462b28fd339bc3d85d60c1a340N.exe"C:\Users\Admin\AppData\Local\Temp\6d88a5462b28fd339bc3d85d60c1a340N.exe"1⤵
- UAC bypass
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- Drops file in Program Files directory
- 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\FR8xG7c6eo.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:\ProgramData\Templates\spoolsv.exe"C:\ProgramData\Templates\spoolsv.exe"3⤵
- UAC bypass
- Executes dropped EXE
- Checks whether UAC is enabled
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- System policy modification
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Photo Viewer\es-ES\dllhost.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:\ProgramData\Templates\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 "winlogon" /sc ONLOGON /tr "'C:\Windows\System32\api-ms-win-core-string-l1-1-0\winlogon.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 "sppsvc" /sc ONLOGON /tr "'C:\Recovery\6f0e9922-3d6d-11ef-b835-f2a3cf4ad94f\sppsvc.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\InfDefaultInstall\dwm.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
200B
MD5dd97eaf71502b25d9ee247ec22249bbe
SHA1472d69da21fe80f8397e057d7de9296dd991e7db
SHA256b3b56eee7dd2e87edd812201b17ceed62bc1d0434a9f190fdd1eef9c99923240
SHA512612fd1402a0c3a20563ee2942955db1dacc57289c5de36799b6fea032c83e07932b5a36747b6a15328550395bc9ebbde10b57a61331e5ab71c9e04e65371d2ce
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Filesize
1.5MB
MD56d88a5462b28fd339bc3d85d60c1a340
SHA158116f47109092bd855cefa90820ee8e5fdd1346
SHA2561f9e61c82cd02f8cb6780816776425413962b725ad18078c3e905af5484db607
SHA512a69a83ab46f7842ae71335d98dbdaab7c94fbdaf977d7113370bcfebb59dae30fb1a1238a72587f4931cc1987b09fca493b51c11a6488068d46e8c75ce184353
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Filesize
1.6MB
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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
48KB
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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
48KB
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Filesize
4KB
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Filesize
64KB
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Filesize
48KB
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Filesize
32KB
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Filesize
40KB
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Filesize
32KB
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Filesize
48KB
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Filesize
40KB
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Filesize
32KB
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Filesize
9.9MB
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Filesize
48KB
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Filesize
9.9MB
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Filesize
9.9MB
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Filesize
9.9MB
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Filesize
9.9MB
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Filesize
1.6MB