Analysis
- max time kernel
91s - max time network
156s - platform
windows10-2004_x64 - resource
win10v2004-20240221-en - resource tags
- submitted
23/02/2024, 14:57
General
- Target 691ef3891d5c155f2689647f2c441617.exe
- Size 4.1MB
- Sample240223-sblc2sbe25
- SHA256 bfbf60a70d1dbdd452f3b3bc819ce5804b5fc4baa028af084c2e84abaf73bb65
Malware Config
Signatures
- 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.
- Drops startup file 1 IoCs
- Executes dropped EXE 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.
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\691ef3891d5c155f2689647f2c441617.exe"C:\Users\Admin\AppData\Local\Temp\691ef3891d5c155f2689647f2c441617.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Drops startup file
- Checks whether UAC is enabled
- Writes to the Master Boot Record (MBR)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qemu-ga.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qemu-ga.exe"2⤵
- Executes dropped EXE
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
qemu-ga.exe
memory/1184-47-0x00007FFD19BA0000-0x00007FFD1A661000-memory.dmp
memory/1184-46-0x00007FFD19BA0000-0x00007FFD1A661000-memory.dmp
memory/1184-42-0x0000000000FC0000-0x0000000000FC8000-memory.dmp
memory/1792-18-0x00000000055B0000-0x00000000055EC000-memory.dmp
memory/1792-21-0x00000000064C0000-0x0000000006536000-memory.dmp
memory/1792-6-0x0000000075AA0000-0x0000000075B90000-memory.dmp
memory/1792-7-0x0000000075AA0000-0x0000000075B90000-memory.dmp
memory/1792-8-0x0000000077454000-0x0000000077456000-memory.dmp
memory/1792-13-0x0000000000100000-0x0000000000BC2000-memory.dmp
memory/1792-14-0x0000000000100000-0x0000000000BC2000-memory.dmp
memory/1792-15-0x0000000005C20000-0x0000000006238000-memory.dmp
memory/1792-16-0x0000000005550000-0x0000000005562000-memory.dmp
memory/1792-17-0x0000000005710000-0x000000000581A000-memory.dmp
memory/1792-0-0x0000000000100000-0x0000000000BC2000-memory.dmp
memory/1792-19-0x0000000005820000-0x000000000586C000-memory.dmp
memory/1792-20-0x00000000059E0000-0x0000000005A46000-memory.dmp
memory/1792-5-0x0000000075AA0000-0x0000000075B90000-memory.dmp
memory/1792-22-0x00000000065E0000-0x0000000006672000-memory.dmp
memory/1792-23-0x0000000006C30000-0x00000000071D4000-memory.dmp
memory/1792-24-0x00000000065B0000-0x00000000065CE000-memory.dmp
memory/1792-25-0x0000000007230000-0x0000000007280000-memory.dmp
memory/1792-26-0x0000000007940000-0x0000000007B02000-memory.dmp
memory/1792-27-0x0000000008240000-0x000000000876C000-memory.dmp
memory/1792-31-0x0000000000100000-0x0000000000BC2000-memory.dmp
memory/1792-4-0x0000000075AA0000-0x0000000075B90000-memory.dmp
memory/1792-3-0x0000000075AA0000-0x0000000075B90000-memory.dmp
memory/1792-44-0x0000000075AA0000-0x0000000075B90000-memory.dmp
memory/1792-45-0x0000000000100000-0x0000000000BC2000-memory.dmp
memory/1792-2-0x0000000075AA0000-0x0000000075B90000-memory.dmp
memory/1792-1-0x0000000075AA0000-0x0000000075B90000-memory.dmp