dcrat | 11271bb4ead40385c854e9a19eef0d64578639066195361a5e4818d172f5bbfb

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	backgroundTaskHost.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

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

Query Registry

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	backgroundTaskHost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	backgroundTaskHost.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe

Executes dropped EXE 1 IoCs

pid	Process
4632	backgroundTaskHost.exe

Identifies Wine through registry keys 2 TTPs 2 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Wine	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Wine	backgroundTaskHost.exe

Adds Run key to start application 2 TTPs 6 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\lsass = "\"C:\\Program Files (x86)\\Windows NT\\TableTextService\\en-US\\lsass.exe\""	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\upfc = "\"C:\\Users\\Default User\\upfc.exe\""	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Windows\\System32\\WSDApi\\RuntimeBroker.exe\""	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Windows\\System32\\netbios\\RuntimeBroker.exe\""	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\wininit = "\"C:\\Recovery\\WindowsRE\\wininit.exe\""	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\backgroundTaskHost = "\"C:\\Documents and Settings\\backgroundTaskHost.exe\""	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\WSDApi\RuntimeBroker.exe	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe
File opened for modification	C:\Windows\SysWOW64\WSDApi\RuntimeBroker.exe	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe
File created	C:\Windows\SysWOW64\WSDApi\9e8d7a4ca61bd92aff00cc37a7a4d62a2cac998d	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe
File created	C:\Windows\SysWOW64\netbios\RuntimeBroker.exe	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe
File created	C:\Windows\SysWOW64\netbios\9e8d7a4ca61bd92aff00cc37a7a4d62a2cac998d	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4884	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe
4632	backgroundTaskHost.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Windows NT\TableTextService\en-US\lsass.exe	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe
File created	C:\Program Files (x86)\Windows NT\TableTextService\en-US\6203df4a6bafc7c328ee7f6f8ca0a8a838a8a1b9	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.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 4 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	backgroundTaskHost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	w32tm.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000_Classes\Local Settings	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 6 IoCs

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

persistence execution

Scheduled Task

pid	Process
3160	schtasks.exe
4396	schtasks.exe
1820	schtasks.exe
4208	schtasks.exe
2024	schtasks.exe
4532	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4884	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe
4884	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe
4884	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe
4632	backgroundTaskHost.exe
4632	backgroundTaskHost.exe
4632	backgroundTaskHost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4884	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe
Token: SeDebugPrivilege	4632	backgroundTaskHost.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4884 wrote to memory of 2968	4884	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe	90
PID 4884 wrote to memory of 2968	4884	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe	90
PID 4884 wrote to memory of 2968	4884	JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe	90
PID 2968 wrote to memory of 4908	2968	cmd.exe	92
PID 2968 wrote to memory of 4908	2968	cmd.exe	92
PID 2968 wrote to memory of 4908	2968	cmd.exe	92
PID 4908 wrote to memory of 2156	4908	w32tm.exe	93
PID 4908 wrote to memory of 2156	4908	w32tm.exe	93
PID 2968 wrote to memory of 4632	2968	cmd.exe	95
PID 2968 wrote to memory of 4632	2968	cmd.exe	95
PID 2968 wrote to memory of 4632	2968	cmd.exe	95

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b0464a68d3df95ccb9023830b6a2037c.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Identifies Wine through registry keys
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4884
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\2Q4MpMu8sb.bat"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2968
- - C:\Windows\SysWOW64\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4908
  - - C:\Windows\system32\w32tm.exe
      w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
      4⤵
      PID:2156
- - C:\Documents and Settings\backgroundTaskHost.exe
    "C:\Documents and Settings\backgroundTaskHost.exe"
    3⤵
    - Identifies VirtualBox via ACPI registry values (likely anti-VM)
    - Checks BIOS information in registry
    - Executes dropped EXE
    - Identifies Wine through registry keys
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4632

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\System32\WSDApi\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3160

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\System32\netbios\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4396

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1820

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\Documents and Settings\backgroundTaskHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4208

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows NT\TableTextService\en-US\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2024

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "upfc" /sc ONLOGON /tr "'C:\Users\Default User\upfc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4532

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

Query Registry

5

System Information Discovery

3

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

2