Analysis
- max time kernel
103s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20250610-en - resource tags
- submitted
03/07/2025, 05:46
General
- Target F389E77863DB01F7B67B49B40421BAD8.exe
- Size 4.0MB
- Sample250703-ggexnsvmw5
- SHA256 ef02e566039ef3d0c719f5f72f14a8a3e63da53ffa12931cd88b2e8a6a15d934
Malware Config
Signatures
- DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
- Dcrat family
- Checks computer location settings 2 TTPs 3 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 2 IoCs
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Drops file in Program Files directory 3 IoCs
- Drops file in Windows directory 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs
Adversaries may check for Internet connectivity on compromised systems.
- Modifies registry class 2 IoCs
- Runs ping.exe 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 16 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\F389E77863DB01F7B67B49B40421BAD8.exe"C:\Users\Admin\AppData\Local\Temp\F389E77863DB01F7B67B49B40421BAD8.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\agentDll\8bZd1NevM53y4uUnXYv9PoryFgNtXdP18PBIgE9pnlxKI6UOkG9O.vbe"2⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\agentDll\p3GdfaTWoPhwnhWq.bat" "3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\agentDll\msHypercomponent.exe"C:\agentDll/msHypercomponent.exe"4⤵
- Checks computer location settings
- Executes dropped EXE
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\51hXbE6X5S.bat"5⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\chcp.comchcp 650016⤵
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C:\Windows\system32\PING.EXEping -n 10 localhost6⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
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C:\agentDll\RuntimeBroker.exe"C:\agentDll\RuntimeBroker.exe"6⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v16
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
51hXbE6X5S.bat
8bZd1NevM53y4uUnXYv9PoryFgNtXdP18PBIgE9pnlxKI6UOkG9O.vbe
msHypercomponent.exe
p3GdfaTWoPhwnhWq.bat
memory/5376-37-0x000000001BEC0000-0x000000001BED2000-memory.dmp
memory/5376-43-0x000000001BF00000-0x000000001BF16000-memory.dmp
memory/5376-18-0x000000001B6C0000-0x000000001B6DC000-memory.dmp
memory/5376-19-0x000000001B730000-0x000000001B780000-memory.dmp
memory/5376-21-0x000000001B650000-0x000000001B660000-memory.dmp
memory/5376-23-0x000000001B6E0000-0x000000001B6F8000-memory.dmp
memory/5376-25-0x000000001B660000-0x000000001B670000-memory.dmp
memory/5376-27-0x000000001B670000-0x000000001B680000-memory.dmp
memory/5376-29-0x000000001B700000-0x000000001B70E000-memory.dmp
memory/5376-31-0x000000001B710000-0x000000001B71E000-memory.dmp
memory/5376-33-0x000000001B720000-0x000000001B72C000-memory.dmp
memory/5376-35-0x000000001BE90000-0x000000001BE9E000-memory.dmp
memory/5376-14-0x000000001B690000-0x000000001B6B6000-memory.dmp
memory/5376-39-0x000000001BEA0000-0x000000001BEAC000-memory.dmp
memory/5376-41-0x000000001BEB0000-0x000000001BEC0000-memory.dmp
memory/5376-16-0x0000000002C20000-0x0000000002C2E000-memory.dmp
memory/5376-45-0x000000001BF20000-0x000000001BF32000-memory.dmp
memory/5376-46-0x000000001C470000-0x000000001C998000-memory.dmp
memory/5376-48-0x000000001BEE0000-0x000000001BEEE000-memory.dmp
memory/5376-50-0x000000001BEF0000-0x000000001BEFC000-memory.dmp
memory/5376-52-0x000000001BF40000-0x000000001BF50000-memory.dmp
memory/5376-54-0x000000001BF50000-0x000000001BF60000-memory.dmp
memory/5376-56-0x000000001BFC0000-0x000000001C01A000-memory.dmp
memory/5376-58-0x000000001BF60000-0x000000001BF6E000-memory.dmp
memory/5376-60-0x000000001BF70000-0x000000001BF80000-memory.dmp
memory/5376-62-0x000000001BF80000-0x000000001BF8E000-memory.dmp
memory/5376-64-0x000000001C220000-0x000000001C238000-memory.dmp
memory/5376-66-0x000000001BF90000-0x000000001BF9C000-memory.dmp
memory/5376-68-0x000000001C290000-0x000000001C2DE000-memory.dmp
memory/5376-12-0x00000000007A0000-0x0000000000B5C000-memory.dmp