formbook | f083c960cd2083e99fce5c4546a4732b63500fac38c201fd90d73d6d762204ab

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	ca04c158a9dd8788d96884e6eb11a21b_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	ca04c158a9dd8788d96884e6eb11a21b_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	ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	ca04c158a9dd8788d96884e6eb11a21b_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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	ca04c158a9dd8788d96884e6eb11a21b_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	ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4364 set thread context of 2932	4364	ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe	98

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task/Job

pid	Process
4704	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
4364	ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe
4364	ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe
4364	ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe
2932	ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe
2932	ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4364	ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4364 wrote to memory of 4704	4364	ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe	95
PID 4364 wrote to memory of 4704	4364	ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe	95
PID 4364 wrote to memory of 4704	4364	ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe	95
PID 4364 wrote to memory of 912	4364	ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe	97
PID 4364 wrote to memory of 912	4364	ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe	97
PID 4364 wrote to memory of 912	4364	ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe	97
PID 4364 wrote to memory of 2932	4364	ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe	98
PID 4364 wrote to memory of 2932	4364	ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe	98
PID 4364 wrote to memory of 2932	4364	ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe	98
PID 4364 wrote to memory of 2932	4364	ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe	98
PID 4364 wrote to memory of 2932	4364	ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe	98
PID 4364 wrote to memory of 2932	4364	ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe	98

C:\Users\Admin\AppData\Local\Temp\ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ca04c158a9dd8788d96884e6eb11a21b_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
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4364
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\slvzkA" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA9EC.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4704
- C:\Users\Admin\AppData\Local\Temp\ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe
  "{path}"
  2⤵
  PID:912
- C:\Users\Admin\AppData\Local\Temp\ca04c158a9dd8788d96884e6eb11a21b_JaffaCakes118.exe
  "{path}"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2932

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

Persistence

Scheduled Task/Job

1

Privilege Escalation

Scheduled Task/Job

1

Defense Evasion

Virtualization/Sandbox Evasion

2

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

4

Virtualization/Sandbox Evasion

2