General
-
Target
SolaraBootstrapper.exe
-
Size
9.5MB
-
Sample
240721-14z1xaxcqh
-
MD5
4050f2027e946d524e3a1078a6cd5419
-
SHA1
698f02a2826e7d6ecfebf37b04f0231c904133eb
-
SHA256
2cecd998dd0dda41ee0aefbd0c6a490fb42cb506fcfb2e1dafc0a89b781af9ab
-
SHA512
fed614ebd8197c8809d32e0437dd49fd87640d3fbe0ae806479e79f2480975e404306821c43e726b55d17c02298bb088175ee079bc88d8a8fe942f3d4cd9afab
-
SSDEEP
196608:HE7JB0tYrXLW+d7UcIxptvyUQymRDSI1WCOK5nQ:HE9B0OjrdLK4J/FQ
Behavioral task
behavioral1
Sample
SolaraBootstrapper.exe
Resource
win10-20240404-en
Malware Config
Targets
-
-
Target
SolaraBootstrapper.exe
-
Size
9.5MB
-
MD5
4050f2027e946d524e3a1078a6cd5419
-
SHA1
698f02a2826e7d6ecfebf37b04f0231c904133eb
-
SHA256
2cecd998dd0dda41ee0aefbd0c6a490fb42cb506fcfb2e1dafc0a89b781af9ab
-
SHA512
fed614ebd8197c8809d32e0437dd49fd87640d3fbe0ae806479e79f2480975e404306821c43e726b55d17c02298bb088175ee079bc88d8a8fe942f3d4cd9afab
-
SSDEEP
196608:HE7JB0tYrXLW+d7UcIxptvyUQymRDSI1WCOK5nQ:HE9B0OjrdLK4J/FQ
-
DcRat
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.
-
Identifies VirtualBox via ACPI registry values (likely anti-VM)
-
Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
-
Downloads MZ/PE file
-
Event Triggered Execution: AppInit DLLs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
-
Event Triggered Execution: Image File Execution Options Injection
-
.NET Reactor proctector
Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.
-
Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Event Triggered Execution: Component Object Model Hijacking
Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
-
Executes dropped EXE
-
Loads dropped DLL
-
Accesses cryptocurrency files/wallets, possible credential harvesting
-
Adds Run key to start application
-
Blocklisted process makes network request
-
Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
-
Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
-
Legitimate hosting services abused for malware hosting/C2
-
Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
-
Checks system information in the registry
System information is often read in order to detect sandboxing environments.
-
Drops file in System32 directory
-
Suspicious use of NtSetInformationThreadHideFromDebugger
-
Suspicious use of SetThreadContext
-
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Event Triggered Execution
3AppInit DLLs
1Component Object Model Hijacking
1Image File Execution Options Injection
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Event Triggered Execution
3AppInit DLLs
1Component Object Model Hijacking
1Image File Execution Options Injection
1Scheduled Task/Job
1Scheduled Task
1