General
- Target DCRatBuild.exe
- Size 2.9MB
- Sample240724-tcdv2axcjc
- SHA256 3e3979845ac10b0ac2aceccf5d4e6f86541eb3a0b8d96d04348b8495442b8014
Malware Config
Targets
-
- Target DCRatBuild.exe
- Size 2.9MB
- SHA256 3e3979845ac10b0ac2aceccf5d4e6f86541eb3a0b8d96d04348b8495442b8014
Score10/10DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
Modifies WinLogon for persistence
Process spawned unexpected child process
This typically indicates the parent process was compromised via an exploit or macro.
UAC bypass
Credentials from Password Stores: Credentials from Web Browsers
Malicious Access or copy of Web Browser Credential store.
DCRat payload
Detects payload of DCRat, commonly dropped by NSIS installers.
Disables Task Manager via registry modification
Downloads MZ/PE file
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Infostealers often target stored browser data, which can include saved credentials etc.
Adds Run key to start application
Checks whether UAC is enabled
Legitimate hosting services abused for malware hosting/C2
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
5Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1