Analysis
- max time kernel
149s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
05/03/2026, 03:39
General
- Target bbf513305c61fc5e26cbbe5a72931b5bc0feeb0d834a85edf99b5bf5a853feb4.exe
- Size 1.5MB
- Sample260305-d7pm1sds2x
- SHA256 bbf513305c61fc5e26cbbe5a72931b5bc0feeb0d834a85edf99b5bf5a853feb4
Malware Config
Extracted
-
systembc
-
headwindvariable.cc
-
endlessgrumbler.cc
-
dns
5.132.191.104
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\bbf513305c61fc5e26cbbe5a72931b5bc0feeb0d834a85edf99b5bf5a853feb4.exe"C:\Users\Admin\AppData\Local\Temp\bbf513305c61fc5e26cbbe5a72931b5bc0feeb0d834a85edf99b5bf5a853feb4.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\rfquck\weww.exeC:\ProgramData\rfquck\weww.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 v16
Replay Monitor
Loading Replay Monitor...
Downloads
weww.exe
Test Task17.job
memory/4000-13-0x0000000004870000-0x0000000004871000-memory.dmp
memory/4000-14-0x0000000004850000-0x0000000004851000-memory.dmp
memory/4000-35-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4000-34-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4000-33-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4000-37-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4000-32-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4000-12-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4000-26-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4000-36-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4000-15-0x0000000004840000-0x0000000004841000-memory.dmp
memory/4000-38-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4000-17-0x0000000004860000-0x0000000004861000-memory.dmp
memory/4000-18-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4000-31-0x0000000004880000-0x0000000004881000-memory.dmp
memory/4000-20-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4000-30-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4000-22-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4000-28-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4000-24-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4748-19-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4748-25-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4748-27-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4748-23-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4748-21-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4748-0-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4748-10-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4748-8-0x0000000000400000-0x0000000000806000-memory.dmp
memory/4748-5-0x0000000004880000-0x0000000004881000-memory.dmp
memory/4748-7-0x0000000004860000-0x0000000004861000-memory.dmp
memory/4748-4-0x0000000004840000-0x0000000004841000-memory.dmp
memory/4748-2-0x0000000004850000-0x0000000004851000-memory.dmp
memory/4748-1-0x0000000004870000-0x0000000004871000-memory.dmp