nanocore | 0e3d407a6703aa6daac111afc3ef6db70db97cc98bff8b33cc96d97d10a78cdf

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools	f4b7c7fd4a506534cd052fde285714cb_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	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

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

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1808 set thread context of 2464	1808	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe	102

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 3 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	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

pid	Process
2548	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2464	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe
2464	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe
2464	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2464	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2464	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1808 wrote to memory of 2548	1808	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe	100
PID 1808 wrote to memory of 2548	1808	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe	100
PID 1808 wrote to memory of 2548	1808	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe	100
PID 1808 wrote to memory of 2464	1808	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe	102
PID 1808 wrote to memory of 2464	1808	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe	102
PID 1808 wrote to memory of 2464	1808	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe	102
PID 1808 wrote to memory of 2464	1808	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe	102
PID 1808 wrote to memory of 2464	1808	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe	102
PID 1808 wrote to memory of 2464	1808	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe	102
PID 1808 wrote to memory of 2464	1808	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe	102
PID 1808 wrote to memory of 2464	1808	f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe	102

C:\Users\Admin\AppData\Local\Temp\f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe"
1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1808
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZvYoLsHRg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4532.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2548
- C:\Users\Admin\AppData\Local\Temp\f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe"
  2⤵
  - Checks whether UAC is enabled
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  PID:2464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

Persistence

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Virtualization/Sandbox Evasion

2

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

5

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

2