Analysis
- max time kernel
150s - max time network
155s - platform
windows7_x64 - resource
win7v20201028 - submitted
09/11/2020, 20:26
General
- Target 450224b458d5d44cbaf62d95e18face27de776ed227ba0f7dc7e12bd07f64c9b.exe
- Size 2.1MB
- Sample201109-4bjgcv4pha
- SHA256 450224b458d5d44cbaf62d95e18face27de776ed227ba0f7dc7e12bd07f64c9b
Malware Config
Signatures
- CryptBot
A C++ stealer distributed widely in bundle with other software.
- 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 cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- 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 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 1 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\450224b458d5d44cbaf62d95e18face27de776ed227ba0f7dc7e12bd07f64c9b.exe"C:\Users\Admin\AppData\Local\Temp\450224b458d5d44cbaf62d95e18face27de776ed227ba0f7dc7e12bd07f64c9b.exe"1⤵
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/548-0-0x0000000003F80000-0x0000000003F91000-memory.dmp
memory/548-1-0x0000000004390000-0x00000000043A1000-memory.dmp
memory/1412-2-0x000007FEF7D40000-0x000007FEF7FBA000-memory.dmp