Analysis
- max time kernel
91s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-en-20220112 - submitted
06/03/2022, 22:09
General
- Target eafd60610c62cf0ffd94bd168c68bab0084f9a1b4d737262392d23eb4428ad11.exe
- Size 2.4MB
- Sample220306-1247vaffg5
- SHA256 eafd60610c62cf0ffd94bd168c68bab0084f9a1b4d737262392d23eb4428ad11
Malware Config
Signatures
- Darkstealer
Darkstealer is a file grabber, data stealer, and RAT.
- Echelon
Echelon is a .NET stealer that targets passwords from browsers, email and cryptocurrency clients.
- Echelon - DarkStealer Fork 2 IoCs
Payload resembles modified variant of Echelon Stealer called DarkStealer.
- Echelon log file 1 IoCs
Detects a log file produced by Echelon.
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Identifies Wine through registry keys 2 TTPs 1 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\eafd60610c62cf0ffd94bd168c68bab0084f9a1b4d737262392d23eb4428ad11.exe"C:\Users\Admin\AppData\Local\Temp\eafd60610c62cf0ffd94bd168c68bab0084f9a1b4d737262392d23eb4428ad11.exe"1⤵
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Accesses Microsoft Outlook profiles
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/916-130-0x0000000077430000-0x00000000775D3000-memory.dmp
memory/916-131-0x0000000074290000-0x0000000074A40000-memory.dmp
memory/916-132-0x0000000000960000-0x0000000000F34000-memory.dmp
memory/916-133-0x0000000000960000-0x0000000000F34000-memory.dmp
memory/916-134-0x0000000007A00000-0x0000000007A66000-memory.dmp
memory/916-135-0x0000000007C80000-0x0000000007C81000-memory.dmp
memory/916-136-0x00000000081A0000-0x000000000823C000-memory.dmp
memory/916-137-0x00000000083E0000-0x0000000008472000-memory.dmp
memory/916-138-0x0000000009210000-0x00000000097B4000-memory.dmp