dcrat | 91704a8d50393554e16e3cb1c4323a1ac3fd69ec86c503f86cf2736965abea3b

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	taskhostw.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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	taskhostw.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	taskhostw.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe

Executes dropped EXE 1 IoCs

pid	Process
1916	taskhostw.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-1-5-21-493223053-2004649691-1575712786-1000\Software\Wine	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Key opened	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Wine	taskhostw.exe

Adds Run key to start application 2 TTPs 8 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\taskhostw = "\"C:\\PerfLogs\\taskhostw.exe\""	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\System = "\"C:\\PerfLogs\\System.exe\""	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\OfficeClickToRun = "\"C:\\Program Files\\Common Files\\microsoft shared\\ClickToRun\\api-ms-win-crt-math-l1-1-0\\OfficeClickToRun.exe\""	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\dllhost = "\"C:\\Windows\\System32\\KBDA1\\dllhost.exe\""	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SppExtComObj = "\"C:\\Windows\\System32\\cryptdlg\\SppExtComObj.exe\""	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SearchApp = "\"C:\\Windows\\SystemApps\\Microsoft.Windows.Search_cw5n1h2txyewy\\SearchApi\\SearchApp.exe\""	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\fontdrvhost = "\"C:\\Windows\\System32\\catsrvps\\fontdrvhost.exe\""	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\TextInputHost = "\"C:\\Documents and Settings\\TextInputHost.exe\""	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	taskhostw.exe

Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
File opened for modification	\??\PhysicalDrive0	taskhostw.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\KBDA1\dllhost.exe	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
File created	C:\Windows\SysWOW64\KBDA1\5940a34987c99120d96dace90a3f93f329dcad63	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
File created	C:\Windows\SysWOW64\cryptdlg\SppExtComObj.exe	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
File created	C:\Windows\SysWOW64\cryptdlg\e1ef82546f0b02b7e974f28047f3788b1128cce1	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
File created	C:\Windows\SysWOW64\catsrvps\fontdrvhost.exe	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
File created	C:\Windows\SysWOW64\catsrvps\5b884080fd4f94e2695da25c503f9e33b9605b83	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2148	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
1916	taskhostw.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-math-l1-1-0\OfficeClickToRun.exe	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-math-l1-1-0\OfficeClickToRun.exe	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-math-l1-1-0\e6c9b481da804f07baff8eff543b0a1441069b5d	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApi\SearchApp.exe	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
File created	C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApi\38384e6a620884a6b69bcc56f80d556f9200171c	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	w32tm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskhostw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000_Classes\Local Settings	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 8 IoCs

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

persistence execution

Scheduled Task

pid	Process
4360	schtasks.exe
4248	schtasks.exe
1800	schtasks.exe
3180	schtasks.exe
1320	schtasks.exe
3936	schtasks.exe
624	schtasks.exe
1740	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2148	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
2148	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
2148	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
2148	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
2148	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe
1916	taskhostw.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2148	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Token: SeDebugPrivilege	1916	taskhostw.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2148 wrote to memory of 4988	2148	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe	95
PID 2148 wrote to memory of 4988	2148	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe	95
PID 2148 wrote to memory of 4988	2148	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe	95
PID 4988 wrote to memory of 1568	4988	cmd.exe	97
PID 4988 wrote to memory of 1568	4988	cmd.exe	97
PID 4988 wrote to memory of 1568	4988	cmd.exe	97
PID 1568 wrote to memory of 3080	1568	w32tm.exe	98
PID 1568 wrote to memory of 3080	1568	w32tm.exe	98
PID 4988 wrote to memory of 1916	4988	cmd.exe	105
PID 4988 wrote to memory of 1916	4988	cmd.exe	105
PID 4988 wrote to memory of 1916	4988	cmd.exe	105

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_c95ac454cf5cab75cd487ccb82ee5d2a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.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
- Checks whether UAC is enabled
- Writes to the Master Boot Record (MBR)
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2148
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\bga9htg3wu.bat"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4988
- - 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:1568
  - - C:\Windows\system32\w32tm.exe
      w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
      4⤵
      PID:3080
- - C:\PerfLogs\taskhostw.exe
    "C:\PerfLogs\taskhostw.exe"
    3⤵
    - Identifies VirtualBox via ACPI registry values (likely anti-VM)
    - Checks BIOS information in registry
    - Executes dropped EXE
    - Identifies Wine through registry keys
    - Checks whether UAC is enabled
    - Writes to the Master Boot Record (MBR)
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1916

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-math-l1-1-0\OfficeClickToRun.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3180

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Windows\System32\KBDA1\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1320

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Windows\System32\cryptdlg\SppExtComObj.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3936

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApi\SearchApp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:624

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Windows\System32\catsrvps\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1740

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "TextInputHost" /sc ONLOGON /tr "'C:\Documents and Settings\TextInputHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4360

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\PerfLogs\taskhostw.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4248

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\PerfLogs\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1800

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

Pre-OS Boot

T1542

Bootkit

T1542.003

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

Pre-OS Boot

T1542

Bootkit

T1542.003

Virtualization/Sandbox Evasion

Credential Access

Discovery

Query Registry

System Information Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion