Analysis
- max time kernel
156s - max time network
158s - platform
windows10-2004_x64 - resource
win10v2004-20220722-en - submitted
02/08/2022, 02:04
General
- Target 5ad8e103ec7393b4463b2a15edaba69f4c9a1ffc944968fa133faf45050cc614.exe
- Size 2.1MB
- Sample220802-chhbzafgar
- SHA256 5ad8e103ec7393b4463b2a15edaba69f4c9a1ffc944968fa133faf45050cc614
Malware Config
Extracted
-
cryptbot
-
perrr01.pro
Signatures
- CryptBot
A C++ stealer distributed widely in bundle with other software.
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
- 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 2 IoCs
- Suspicious use of FindShellTrayWindow 12 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\5ad8e103ec7393b4463b2a15edaba69f4c9a1ffc944968fa133faf45050cc614.exe"C:\Users\Admin\AppData\Local\Temp\5ad8e103ec7393b4463b2a15edaba69f4c9a1ffc944968fa133faf45050cc614.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- 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
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Downloads
memory/4168-132-0x0000000000810000-0x0000000000D3A000-memory.dmp
memory/4168-133-0x0000000077B40000-0x0000000077CE3000-memory.dmp
memory/4168-134-0x0000000000810000-0x0000000000D3A000-memory.dmp
memory/4168-135-0x0000000000810000-0x0000000000D3A000-memory.dmp
memory/4168-136-0x0000000077B40000-0x0000000077CE3000-memory.dmp
memory/4168-137-0x0000000000810000-0x0000000000D3A000-memory.dmp