Analysis
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max time kernel
138s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
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submitted
16/10/2023, 13:25
General
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Target
NEAS.09865be06746b9f8fb0b61ebe069f310_JC.exe
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Size
783KB
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MD5
09865be06746b9f8fb0b61ebe069f310
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SHA1
0e280ed0938a153affaf8b11137babf42b88aa46
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SHA256
aafe3c3d07cf40de94893484d76ab998678475ff0e65abdd416ec67ef2888351
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SHA512
f8f40a1b737bcb009e6ed06e1888b886132845efceec8667481da709181b9696ebe72c456161ccca53630c8e3de80f54f128e38607001d2c16d01de90656321f
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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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Process spawned unexpected child process 7 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 4 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 7 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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Creates scheduled task(s) 1 TTPs 7 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Modifies registry class 1 IoCs
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Suspicious behavior: EnumeratesProcesses 22 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\NEAS.09865be06746b9f8fb0b61ebe069f310_JC.exe"C:\Users\Admin\AppData\Local\Temp\NEAS.09865be06746b9f8fb0b61ebe069f310_JC.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\HncZTqxPlS.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:\Program Files (x86)\Windows Defender\de-DE\sysmon.exe"C:\Program Files (x86)\Windows Defender\de-DE\sysmon.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 "winlogon" /sc ONLOGON /tr "'C:\Windows\System32\DeviceCenter\winlogon.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Defender\de-DE\sysmon.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\System32\C_20833\RuntimeBroker.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\SppExtComObj.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\PerfLogs\fontdrvhost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\odt\SearchApp.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "TextInputHost" /sc ONLOGON /tr "'C:\Documents and Settings\TextInputHost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
783KB
MD509865be06746b9f8fb0b61ebe069f310
SHA10e280ed0938a153affaf8b11137babf42b88aa46
SHA256aafe3c3d07cf40de94893484d76ab998678475ff0e65abdd416ec67ef2888351
SHA512f8f40a1b737bcb009e6ed06e1888b886132845efceec8667481da709181b9696ebe72c456161ccca53630c8e3de80f54f128e38607001d2c16d01de90656321f
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Filesize
783KB
MD509865be06746b9f8fb0b61ebe069f310
SHA10e280ed0938a153affaf8b11137babf42b88aa46
SHA256aafe3c3d07cf40de94893484d76ab998678475ff0e65abdd416ec67ef2888351
SHA512f8f40a1b737bcb009e6ed06e1888b886132845efceec8667481da709181b9696ebe72c456161ccca53630c8e3de80f54f128e38607001d2c16d01de90656321f
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Filesize
783KB
MD509865be06746b9f8fb0b61ebe069f310
SHA10e280ed0938a153affaf8b11137babf42b88aa46
SHA256aafe3c3d07cf40de94893484d76ab998678475ff0e65abdd416ec67ef2888351
SHA512f8f40a1b737bcb009e6ed06e1888b886132845efceec8667481da709181b9696ebe72c456161ccca53630c8e3de80f54f128e38607001d2c16d01de90656321f
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Filesize
220B
MD5ea9a6ec700a3949da5b419f6137ad200
SHA1b29c95d1f9c3208dabda6197d73e85cede8e34a1
SHA2561ad5d76b0a1049fc2211d54b917e21e04a679b33c4235648c552095803e06da2
SHA512285c8ee90c85d9b979c5c65a27fc12a3201350fbedb5834c2e8de1e84fe4aff01c21ccc0fb7b827e9e5d26a539d6c93fac60fea43c76f01bfcfe0920aa47da48
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Filesize
48KB
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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
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
32KB
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Filesize
32KB
-
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
-
Filesize
64KB
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Filesize
808KB
-
Filesize
64KB
-
Filesize
64KB
-
Filesize
64KB
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Filesize
32KB
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Filesize
32KB
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Filesize
10.8MB
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Filesize
1024KB
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Filesize
64KB
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Filesize
1024KB
-
Filesize
64KB
-
Filesize
64KB
-
Filesize
64KB
-
Filesize
32KB
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Filesize
64KB
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Filesize
10.8MB
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Filesize
64KB
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Filesize
10.8MB
-
Filesize
10.8MB
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Filesize
64KB
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Filesize
64KB
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Filesize
64KB
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Filesize
10.8MB