bitrat | 746b35c07eefaba6dd40aa5a8b2389eb1ca04bed6ba23acd0a732a7148f3f258

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	f94a2299d0fe2837603734bbf0c3c161_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	f94a2299d0fe2837603734bbf0c3c161_JaffaCakes118.exe

.NET Reactor proctector 1 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
behavioral2/memory/1972-8-0x0000000002950000-0x0000000002968000-memory.dmp	net_reactor

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	f94a2299d0fe2837603734bbf0c3c161_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f94a2299d0fe2837603734bbf0c3c161_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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	f94a2299d0fe2837603734bbf0c3c161_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	f94a2299d0fe2837603734bbf0c3c161_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	f94a2299d0fe2837603734bbf0c3c161_JaffaCakes118.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

pid	Process
2768	MSBuild.exe
2768	MSBuild.exe
2768	MSBuild.exe
2768	MSBuild.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1972 set thread context of 2768	1972	f94a2299d0fe2837603734bbf0c3c161_JaffaCakes118.exe	97

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
4104	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1972	f94a2299d0fe2837603734bbf0c3c161_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1972	f94a2299d0fe2837603734bbf0c3c161_JaffaCakes118.exe
Token: SeShutdownPrivilege	2768	MSBuild.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2768	MSBuild.exe
2768	MSBuild.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 4104	1972	f94a2299d0fe2837603734bbf0c3c161_JaffaCakes118.exe	95
PID 1972 wrote to memory of 4104	1972	f94a2299d0fe2837603734bbf0c3c161_JaffaCakes118.exe	95
PID 1972 wrote to memory of 4104	1972	f94a2299d0fe2837603734bbf0c3c161_JaffaCakes118.exe	95
PID 1972 wrote to memory of 2768	1972	f94a2299d0fe2837603734bbf0c3c161_JaffaCakes118.exe	97
PID 1972 wrote to memory of 2768	1972	f94a2299d0fe2837603734bbf0c3c161_JaffaCakes118.exe	97
PID 1972 wrote to memory of 2768	1972	f94a2299d0fe2837603734bbf0c3c161_JaffaCakes118.exe	97
PID 1972 wrote to memory of 2768	1972	f94a2299d0fe2837603734bbf0c3c161_JaffaCakes118.exe	97
PID 1972 wrote to memory of 2768	1972	f94a2299d0fe2837603734bbf0c3c161_JaffaCakes118.exe	97
PID 1972 wrote to memory of 2768	1972	f94a2299d0fe2837603734bbf0c3c161_JaffaCakes118.exe	97
PID 1972 wrote to memory of 2768	1972	f94a2299d0fe2837603734bbf0c3c161_JaffaCakes118.exe	97
PID 1972 wrote to memory of 2768	1972	f94a2299d0fe2837603734bbf0c3c161_JaffaCakes118.exe	97
PID 1972 wrote to memory of 2768	1972	f94a2299d0fe2837603734bbf0c3c161_JaffaCakes118.exe	97
PID 1972 wrote to memory of 2768	1972	f94a2299d0fe2837603734bbf0c3c161_JaffaCakes118.exe	97
PID 1972 wrote to memory of 2768	1972	f94a2299d0fe2837603734bbf0c3c161_JaffaCakes118.exe	97

C:\Users\Admin\AppData\Local\Temp\f94a2299d0fe2837603734bbf0c3c161_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f94a2299d0fe2837603734bbf0c3c161_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:1972
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BGSTwJYFhUI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5DCB.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4104
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2768

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

Persistence

Scheduled Task/Job

Privilege Escalation

Scheduled Task/Job

Defense Evasion

Virtualization/Sandbox Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

Virtualization/Sandbox Evasion