fatalrat | 977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95

Virtualization/Sandbox Evasion

T1497

Processes:

977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

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

Query Registry

System Information Discovery

Processes:

977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

Processes:

977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3419463127-3903270268-2580331543-1000\Control Panel\International\Geo\Nation	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

Executes dropped EXE 1 IoCs

Processes:

977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

pid	Process
2248	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

Themida packer 7 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/3668-0-0x0000000000400000-0x0000000000A15000-memory.dmp	themida
behavioral2/memory/3668-2-0x0000000000400000-0x0000000000A15000-memory.dmp	themida
behavioral2/files/0x0008000000023421-12.dat	themida
behavioral2/memory/3668-18-0x0000000000400000-0x0000000000A15000-memory.dmp	themida
behavioral2/memory/2248-19-0x0000000000400000-0x0000000000A15000-memory.dmp	themida
behavioral2/memory/2248-20-0x0000000000400000-0x0000000000A15000-memory.dmp	themida
behavioral2/memory/2248-26-0x0000000000400000-0x0000000000A15000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

Processes:

977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

pid	Process
3668	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe
2248	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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.

discovery

System Language Discovery

T1614.001

Processes:

977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

description	pid	Process
Token: SeDebugPrivilege	3668	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe
Token: SeDebugPrivilege	2248	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe

description	pid	Process	procid_target
PID 3668 wrote to memory of 2248	3668	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe	87
PID 3668 wrote to memory of 2248	3668	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe	87
PID 3668 wrote to memory of 2248	3668	977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe	87

C:\Users\Admin\AppData\Local\Temp\977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe
"C:\Users\Admin\AppData\Local\Temp\977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3668
- C:\Users\Admin\AppData\Local\977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe
  "C:\Users\Admin\AppData\Local\977c2c64d9fab63868834f7608f1aaf9c5f2b9eed37405964791f94f54589f95.exe"
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Checks whether UAC is enabled
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2248

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

3

System Information Discovery

4

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion