Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20250217-en - resource tags
- submitted
27/02/2025, 02:13
General
- Target 0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.exe
- Size 1.6MB
- Sample250227-cnes2a1sg1
- SHA256 0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f
Malware Config
Extracted
-
systembc
-
towerbingobongoboom.com
-
93.186.202.3
Signatures
- SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
- Systembc family
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
- Checks BIOS information in registry 2 TTPs 4 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Executes dropped EXE 1 IoCs
- Identifies Wine through registry keys 2 TTPs 2 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Drops file in Windows directory 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 2 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
Processes
-
C:\Users\Admin\AppData\Local\Temp\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.exe"C:\Users\Admin\AppData\Local\Temp\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.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
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
-
C:\ProgramData\dpejbgw\kklosto.exeC:\ProgramData\dpejbgw\kklosto.exe1⤵
- 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
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
kklosto.exe
Test Task17.job
memory/4348-22-0x0000000000400000-0x0000000000846000-memory.dmp
memory/4348-26-0x0000000000400000-0x0000000000846000-memory.dmp
memory/4348-31-0x0000000000400000-0x0000000000846000-memory.dmp
memory/4348-30-0x0000000000400000-0x0000000000846000-memory.dmp
memory/4348-29-0x0000000000400000-0x0000000000846000-memory.dmp
memory/4348-27-0x0000000000400000-0x0000000000846000-memory.dmp
memory/4348-25-0x0000000000400000-0x0000000000846000-memory.dmp
memory/4348-24-0x0000000000400000-0x0000000000846000-memory.dmp
memory/4348-21-0x0000000000400000-0x0000000000846000-memory.dmp
memory/4348-17-0x0000000000400000-0x0000000000846000-memory.dmp
memory/4348-28-0x0000000000400000-0x0000000000846000-memory.dmp
memory/4348-16-0x0000000000400000-0x0000000000846000-memory.dmp
memory/4936-7-0x0000000000400000-0x0000000000846000-memory.dmp
memory/4936-2-0x0000000000401000-0x0000000000403000-memory.dmp
memory/4936-13-0x0000000000400000-0x0000000000846000-memory.dmp
memory/4936-12-0x0000000000400000-0x0000000000846000-memory.dmp
memory/4936-0-0x0000000000400000-0x0000000000846000-memory.dmp
memory/4936-19-0x0000000000400000-0x0000000000846000-memory.dmp
memory/4936-11-0x0000000000400000-0x0000000000846000-memory.dmp
memory/4936-3-0x0000000000400000-0x0000000000846000-memory.dmp
memory/4936-9-0x0000000000400000-0x0000000000846000-memory.dmp
memory/4936-1-0x0000000077764000-0x0000000077766000-memory.dmp
memory/4936-8-0x0000000000400000-0x0000000000846000-memory.dmp
memory/4936-10-0x0000000000400000-0x0000000000846000-memory.dmp
memory/4936-6-0x0000000000400000-0x0000000000846000-memory.dmp