Analysis
- max time kernel
117s - max time network
116s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
01/09/2024, 02:10
General
- Target ea2b4081e587b0d36194c3d417a4cfb0N.exe
- Size 4.1MB
- Sample240901-cl7q2aydnl
- SHA256 a2d288152d7e01320bbea8c0d9a464ee8ac823be04f56dd612fc0cccf14183dd
Malware Config
Extracted
-
cryptbot
-
xqq01.top
Signatures
- CryptBot
A C++ stealer distributed widely in bundle with other software.
- Detect Neshta payload 4 IoCs
- Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
- Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
- 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.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 2 IoCs
- 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.
- Loads dropped DLL 1 IoCs
- Modifies system executable filetype association 2 TTPs 1 IoCs
- 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
- Drops file in Program Files directory 64 IoCs
- Drops file in Windows directory 1 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.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Modifies registry class 1 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of FindShellTrayWindow 12 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\ea2b4081e587b0d36194c3d417a4cfb0N.exe"C:\Users\Admin\AppData\Local\Temp\ea2b4081e587b0d36194c3d417a4cfb0N.exe"1⤵
- Checks computer location settings
- Modifies system executable filetype association
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\3582-490\ea2b4081e587b0d36194c3d417a4cfb0N.exe"C:\Users\Admin\AppData\Local\Temp\3582-490\ea2b4081e587b0d36194c3d417a4cfb0N.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Program Files (x86)\Opura\setup.exe"C:\Program Files (x86)\Opura\setup.exe"3⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
-
-
Network
MITRE ATT&CK Enterprise v15
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
2Credentials In Files
2Replay Monitor
Loading Replay Monitor...
Downloads
ACROTE~1.EXE
setups.exe
setup.exe
47283761.txt
_Info.txt
j4TgWbXq0X.zip
ea2b4081e587b0d36194c3d417a4cfb0N.exe
UAC.dll
memory/1624-267-0x0000000000120000-0x00000000005C3000-memory.dmp
memory/1624-281-0x0000000000120000-0x00000000005C3000-memory.dmp
memory/1624-37-0x0000000000120000-0x00000000005C3000-memory.dmp
memory/1624-29-0x0000000000121000-0x0000000000167000-memory.dmp
memory/1624-36-0x0000000000120000-0x00000000005C3000-memory.dmp
memory/1624-263-0x0000000000120000-0x00000000005C3000-memory.dmp
memory/1624-301-0x0000000000120000-0x00000000005C3000-memory.dmp
memory/1624-266-0x0000000000120000-0x00000000005C3000-memory.dmp
memory/1624-24-0x0000000077A84000-0x0000000077A86000-memory.dmp
memory/1624-268-0x0000000000120000-0x00000000005C3000-memory.dmp
memory/1624-270-0x0000000000120000-0x00000000005C3000-memory.dmp
memory/1624-23-0x0000000000120000-0x00000000005C3000-memory.dmp
memory/1624-298-0x0000000000120000-0x00000000005C3000-memory.dmp
memory/1624-273-0x0000000000120000-0x00000000005C3000-memory.dmp
memory/1624-296-0x0000000000120000-0x00000000005C3000-memory.dmp
memory/1624-278-0x0000000000120000-0x00000000005C3000-memory.dmp
memory/1624-28-0x00000000053B0000-0x00000000053B1000-memory.dmp
memory/1624-284-0x0000000000120000-0x00000000005C3000-memory.dmp
memory/1624-286-0x0000000000120000-0x00000000005C3000-memory.dmp
memory/1624-290-0x0000000000120000-0x00000000005C3000-memory.dmp
memory/1624-293-0x0000000000120000-0x00000000005C3000-memory.dmp
memory/5060-277-0x0000000000400000-0x000000000041B000-memory.dmp
memory/5060-272-0x0000000000400000-0x000000000041B000-memory.dmp
memory/5060-265-0x0000000000400000-0x000000000041B000-memory.dmp