Analysis
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max time kernel
141s -
max time network
107s -
platform
windows10-2004_x64 -
resource
win10v2004-20240910-en -
resource tags
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submitted
19-09-2024 03:34
General
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Target
f85216456a620efc2e49a5a5b1ba7a44ad57ae4fc5da07ce19a4b6e861696c0f.exe
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Size
783KB
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MD5
8946d7f1d5ac2d71c78fa58bea789831
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SHA1
e481e69b29f81d40c1e89b17324745db00846960
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SHA256
f85216456a620efc2e49a5a5b1ba7a44ad57ae4fc5da07ce19a4b6e861696c0f
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SHA512
b77af5c6d74c36cd227e653b2e9b3d599f12decea74f0a62c435e28724136a413358ae226dd562b9a24f14208908444041da94d86d7ba32d1e87ab6bf012461b
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SSDEEP
12288:mqnOYxdAgpoNeF91rg5iFdr0yQ9gYx+EIpakCYJRU7Q9bWoFzqK:m+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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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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Adds Run key to start application 2 TTPs 3 IoCs
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Checks whether UAC is enabled 1 TTPs 2 IoCs
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Drops file in Windows directory 3 IoCs
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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 1 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\f85216456a620efc2e49a5a5b1ba7a44ad57ae4fc5da07ce19a4b6e861696c0f.exe"C:\Users\Admin\AppData\Local\Temp\f85216456a620efc2e49a5a5b1ba7a44ad57ae4fc5da07ce19a4b6e861696c0f.exe"1⤵
- UAC bypass
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- System policy modification
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\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 "spoolsv" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\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 "System" /sc ONLOGON /tr "'C:\Users\Default\Favorites\System.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\setuperr\explorer.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
MD58946d7f1d5ac2d71c78fa58bea789831
SHA1e481e69b29f81d40c1e89b17324745db00846960
SHA256f85216456a620efc2e49a5a5b1ba7a44ad57ae4fc5da07ce19a4b6e861696c0f
SHA512b77af5c6d74c36cd227e653b2e9b3d599f12decea74f0a62c435e28724136a413358ae226dd562b9a24f14208908444041da94d86d7ba32d1e87ab6bf012461b
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Filesize
32KB
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Filesize
808KB
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Filesize
32KB
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Filesize
64KB
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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
40KB
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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
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
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
8KB
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Filesize
10.8MB
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Filesize
32KB