nanocore | 2ca10772cb2fd2551b013a2ecd934a118331d64ad649811a5cb91a4ec4e20da8

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	fc2e53fb2e97b0aff5807ca7ecd22a9e_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	fc2e53fb2e97b0aff5807ca7ecd22a9e_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	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	fc2e53fb2e97b0aff5807ca7ecd22a9e_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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\UPNP Subsystem = "C:\\Program Files (x86)\\UPNP Subsystem\\upnpss.exe"	fc2e53fb2e97b0aff5807ca7ecd22a9e_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	fc2e53fb2e97b0aff5807ca7ecd22a9e_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 value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4100 set thread context of 4540	4100	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe	93

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\UPNP Subsystem\upnpss.exe	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe
File opened for modification	C:\Program Files (x86)\UPNP Subsystem\upnpss.exe	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.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 5 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	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

persistence execution

Scheduled Task

pid	Process
3044	schtasks.exe
1948	schtasks.exe
3088	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4540	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe
4540	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe
4540	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4540	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4540	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 4100 wrote to memory of 3044	4100	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe	91
PID 4100 wrote to memory of 3044	4100	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe	91
PID 4100 wrote to memory of 3044	4100	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe	91
PID 4100 wrote to memory of 4540	4100	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe	93
PID 4100 wrote to memory of 4540	4100	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe	93
PID 4100 wrote to memory of 4540	4100	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe	93
PID 4100 wrote to memory of 4540	4100	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe	93
PID 4100 wrote to memory of 4540	4100	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe	93
PID 4100 wrote to memory of 4540	4100	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe	93
PID 4100 wrote to memory of 4540	4100	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe	93
PID 4100 wrote to memory of 4540	4100	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe	93
PID 4540 wrote to memory of 1948	4540	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe	94
PID 4540 wrote to memory of 1948	4540	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe	94
PID 4540 wrote to memory of 1948	4540	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe	94
PID 4540 wrote to memory of 3088	4540	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe	96
PID 4540 wrote to memory of 3088	4540	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe	96
PID 4540 wrote to memory of 3088	4540	fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe	96

C:\Users\Admin\AppData\Local\Temp\fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fc2e53fb2e97b0aff5807ca7ecd22a9e_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:4100
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xxQWKrYqbg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9B70.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3044
- C:\Users\Admin\AppData\Local\Temp\fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\fc2e53fb2e97b0aff5807ca7ecd22a9e_JaffaCakes118.exe"
  2⤵
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4540
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "UPNP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA004.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1948
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "UPNP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA0C0.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3088

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Modify Registry

T1112

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