978cd9073207975e6dd535e34b59014de4eb4db0d54fd67d2d8a355e5df7458b

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	9e89ec8a6d7a50e4f9a68a7ed90f0eea_JaffaCakes118.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	9e89ec8a6d7a50e4f9a68a7ed90f0eea_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	9e89ec8a6d7a50e4f9a68a7ed90f0eea_JaffaCakes118.exe

Themida packer 1 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/3032-29-0x00000000005F0000-0x0000000000EAE000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	9e89ec8a6d7a50e4f9a68a7ed90f0eea_JaffaCakes118.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	9e89ec8a6d7a50e4f9a68a7ed90f0eea_JaffaCakes118.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
3	checkip.dyndns.org

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
3032	9e89ec8a6d7a50e4f9a68a7ed90f0eea_JaffaCakes118.exe

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	3032	9e89ec8a6d7a50e4f9a68a7ed90f0eea_JaffaCakes118.exe
Token: SeRestorePrivilege	3148	dw20.exe
Token: SeBackupPrivilege	3148	dw20.exe
Token: SeBackupPrivilege	3148	dw20.exe
Token: SeBackupPrivilege	3148	dw20.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3032 wrote to memory of 3148	3032	9e89ec8a6d7a50e4f9a68a7ed90f0eea_JaffaCakes118.exe	89
PID 3032 wrote to memory of 3148	3032	9e89ec8a6d7a50e4f9a68a7ed90f0eea_JaffaCakes118.exe	89
PID 3032 wrote to memory of 3148	3032	9e89ec8a6d7a50e4f9a68a7ed90f0eea_JaffaCakes118.exe	89

System policy modification 1 TTPs 4 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableSmartScreen = "0"	9e89ec8a6d7a50e4f9a68a7ed90f0eea_JaffaCakes118.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	9e89ec8a6d7a50e4f9a68a7ed90f0eea_JaffaCakes118.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	9e89ec8a6d7a50e4f9a68a7ed90f0eea_JaffaCakes118.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	9e89ec8a6d7a50e4f9a68a7ed90f0eea_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\9e89ec8a6d7a50e4f9a68a7ed90f0eea_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\9e89ec8a6d7a50e4f9a68a7ed90f0eea_JaffaCakes118.exe"
1⤵
- UAC bypass
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:3032
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
  dw20.exe -x -s 1688
  2⤵
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:3148

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

Modify Registry

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

4

System Information Discovery

4

Virtualization/Sandbox Evasion