cfccf0b1e8f8ab2be4d51838403d07d56c068b0a500c2afeb7f38d4176a11713

General

Target
BKFDT_file.exe
Size 2.7MB
Sample241118-ed2k6aspgr
SHA256 cfccf0b1e8f8ab2be4d51838403d07d56c068b0a500c2afeb7f38d4176a11713
MD5 cecf8fe4aa89f17d215786c4cd5515aa
SHA1 d41cb203e39a82fe41545e1d030ca8f1fc44ebf2
SHA512 5aab6af50da7fc990bd293db5763c8baf387ae6f957543b0b4efc668fa4826fe8ea109ea49ee7c0ccc12f7e64fa00c9deb52696992c904d66d19982563d219af
SSDEEP 49152:BdyLkDUgnJJOnteWd3dyNeifut9Vm1rN:0kDU4wnteWRdFDt9Vm1
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

discovery evasion trojan

Malware Config

Signatures

Modifies Windows Defender Real-time Protection settings 3 TTPs 6 IoCs

evasion trojan

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableIOAVProtection = "1"	BKFDT_file.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	BKFDT_file.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	BKFDT_file.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	BKFDT_file.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	BKFDT_file.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	BKFDT_file.exe

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	BKFDT_file.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	BKFDT_file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	BKFDT_file.exe

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.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	BKFDT_file.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features	BKFDT_file.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	BKFDT_file.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1084	BKFDT_file.exe

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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BKFDT_file.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1084	BKFDT_file.exe
1084	BKFDT_file.exe
1084	BKFDT_file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1084	BKFDT_file.exe

C:\Users\Admin\AppData\Local\Temp\BKFDT_file.exe
"C:\Users\Admin\AppData\Local\Temp\BKFDT_file.exe"
1⤵
- Modifies Windows Defender Real-time Protection settings
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Windows security modification
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1084