Analysis
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max time kernel
92s -
max time network
94s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
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submitted
28-11-2024 04:47
General
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Target
5cd4495d7ec85110670306ec9a23f14afa8ca4db6249585ce7b543c52250327e.exe
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Size
783KB
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MD5
308e34620e4b48c3ae64e4045a817229
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SHA1
d1312c2b2e9941f03f710af23e640cbfec175467
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SHA256
5cd4495d7ec85110670306ec9a23f14afa8ca4db6249585ce7b543c52250327e
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SHA512
bfc03956208d26b6833c4d8a750041ac021f313f2e009ce009a381b6134e72f0003b2cbf8982d748587a21e249a45c3d21fb1daadd48521969830a37e5241d6d
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SSDEEP
12288:GqnOYxdAgpoNeF91rg5iFdr0yQ9gYx+EIpakCYJRU7Q9bWoFzqK2:G+OQbpbgsFdAyQvzSqaq8qt
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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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 4 IoCs
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Checks whether UAC is enabled 1 TTPs 2 IoCs
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Drops file in System32 directory 4 IoCs
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Drops file in Windows directory 12 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 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 2 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\5cd4495d7ec85110670306ec9a23f14afa8ca4db6249585ce7b543c52250327e.exe"C:\Users\Admin\AppData\Local\Temp\5cd4495d7ec85110670306ec9a23f14afa8ca4db6249585ce7b543c52250327e.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 Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Users\Admin\AppData\Local\Temp\5cd4495d7ec85110670306ec9a23f14afa8ca4db6249585ce7b543c52250327e.exe"C:\Users\Admin\AppData\Local\Temp\5cd4495d7ec85110670306ec9a23f14afa8ca4db6249585ce7b543c52250327e.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\AppxSignature\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 "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\System32\XboxGipRadioManager\RuntimeBroker.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 "TextInputHost" /sc ONLOGON /tr "'C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\InputApp\TextInputHost.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 "smss" /sc ONLOGON /tr "'C:\Windows\Tasks\smss.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
1KB
MD5b7c0c43fc7804baaa7dc87152cdc9554
SHA11bab62bd56af745678d4e967d91e1ccfdeed4038
SHA25646386a61f3aaf1b1c2e6efc9fc7e9e9ff16cd13ae58b8d856835771fedb6d457
SHA5129fda3dd00a3406137e0113f13f78e77b20a76512b35820d38df696842cbbf2e2ebabfb99a3846c9637ecb54af858ec1551521187e379872973006426a253f769
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Filesize
783KB
MD5308e34620e4b48c3ae64e4045a817229
SHA1d1312c2b2e9941f03f710af23e640cbfec175467
SHA2565cd4495d7ec85110670306ec9a23f14afa8ca4db6249585ce7b543c52250327e
SHA512bfc03956208d26b6833c4d8a750041ac021f313f2e009ce009a381b6134e72f0003b2cbf8982d748587a21e249a45c3d21fb1daadd48521969830a37e5241d6d
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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
32KB
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Filesize
8KB
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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
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
10.8MB
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Filesize
808KB