Analysis
- max time kernel
29s - max time network
34s - platform
windows11-21h2_x64 - resource
win11-20240802-en - resource tags
- submitted
03/08/2024, 00:44
General
- Target VMXSPF/VMXSPF.exe
- Size 3.5MB
- Sample240803-a3k79axbpl
- SHA256 e1a7972f5375eeb34a3f3a4d1177704ed211044c9e24e4ac601f582ce47f10a1
Malware Config
Signatures
- RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
- SectopRAT
SectopRAT is a remote access trojan first seen in November 2019.
- SectopRAT payload 3 IoCs
- 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.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Themida packer 3 IoCs
Detects Themida, an advanced Windows software protection system.
- 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.
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\VMXSPF\VMXSPF.exe"C:\Users\Admin\AppData\Local\Temp\VMXSPF\VMXSPF.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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
tmpABE1.tmp
tmpAC06.tmp
tmpAC31.tmp
tmpAC47.tmp
tmpAC4D.tmp
tmpAC69.tmp
memory/832-13-0x0000000006900000-0x0000000006AC2000-memory.dmp
memory/832-18-0x0000000007A50000-0x0000000007A6E000-memory.dmp
memory/832-9-0x00000000054A0000-0x00000000054B2000-memory.dmp
memory/832-10-0x00000000054C0000-0x00000000054FC000-memory.dmp
memory/832-11-0x0000000005B50000-0x0000000005B9C000-memory.dmp
memory/832-12-0x0000000005CE0000-0x0000000005DEA000-memory.dmp
memory/832-0-0x0000000000400000-0x0000000000D36000-memory.dmp
memory/832-14-0x0000000006AD0000-0x0000000006FFC000-memory.dmp
memory/832-15-0x0000000007110000-0x0000000007186000-memory.dmp
memory/832-16-0x00000000071F0000-0x0000000007282000-memory.dmp
memory/832-17-0x0000000007290000-0x0000000007836000-memory.dmp
memory/832-8-0x0000000005520000-0x0000000005B38000-memory.dmp
memory/832-19-0x0000000007C80000-0x0000000007CE6000-memory.dmp
memory/832-7-0x0000000000400000-0x0000000000D36000-memory.dmp
memory/832-6-0x0000000000400000-0x0000000000D36000-memory.dmp
memory/832-4-0x0000000075B60000-0x0000000075C50000-memory.dmp
memory/832-3-0x0000000075B60000-0x0000000075C50000-memory.dmp
memory/832-2-0x0000000075B60000-0x0000000075C50000-memory.dmp
memory/832-1-0x0000000075B76000-0x0000000075B77000-memory.dmp
memory/832-191-0x0000000000400000-0x0000000000D36000-memory.dmp
memory/832-192-0x0000000075B60000-0x0000000075C50000-memory.dmp