dcrat | 91704a8d50393554e16e3cb1c4323a1ac3fd69ec86c503f86cf2736965abea3b

Virtualization/Sandbox Evasion

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

Checks BIOS information in registry 2 TTPs 6 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_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe

Executes dropped EXE 1 IoCs

pid	Process
1728	explorer.exe

Identifies Wine through registry keys 2 TTPs 3 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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Wine	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Key opened	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Wine	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Key opened	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Wine	explorer.exe

Loads dropped DLL 2 IoCs

pid	Process
2620	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
2620	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe

Adds Run key to start application 2 TTPs 10 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:\\Windows\\System32\\wmpps\\lsass.exe\""	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\smss = "\"C:\\Windows\\System32\\netbios\\smss.exe\""	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\explorer = "\"C:\\MSOCache\\All Users\\explorer.exe\""	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\lsm = "\"C:\\Users\\Public\\Recorded TV\\Sample Media\\lsm.exe\""	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\taskhost = "\"C:\\Windows\\System32\\korean\\taskhost.exe\""	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Documents and Settings\\csrss.exe\""	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\System32\\NlsData004e\\csrss.exe\""	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\lsm = "\"C:\\Windows\\System32\\C_10002\\lsm.exe\""	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\services = "\"C:\\Users\\Default User\\services.exe\""	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\sppsvc = "\"C:\\Windows\\tracing\\sppsvc.exe\""	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe

Checks whether UAC is enabled 1 TTPs 3 IoCs

evasion trojan

System Information Discovery

T1082

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	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	explorer.exe

Writes to the Master Boot Record (MBR) 1 TTPs 3 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	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
File opened for modification	\??\PhysicalDrive0	explorer.exe

Drops file in System32 directory 11 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\NlsData004e\886983d96e3d3e31032c679b2d4ea91b6c05afef	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
File created	C:\Windows\SysWOW64\wmpps\lsass.exe	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
File created	C:\Windows\SysWOW64\wmpps\6203df4a6bafc7c328ee7f6f8ca0a8a838a8a1b9	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
File created	C:\Windows\SysWOW64\netbios\69ddcba757bf72f7d36c464c71f42baab150b2b9	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
File created	C:\Windows\SysWOW64\NlsData004e\csrss.exe	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
File opened for modification	C:\Windows\SysWOW64\NlsData004e\csrss.exe	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
File created	C:\Windows\SysWOW64\netbios\smss.exe	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
File created	C:\Windows\SysWOW64\C_10002\lsm.exe	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
File created	C:\Windows\SysWOW64\C_10002\101b941d020240259ca4912829b53995ad543df6	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
File created	C:\Windows\SysWOW64\korean\taskhost.exe	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
File created	C:\Windows\SysWOW64\korean\b75386f1303e64d8139363b71e44ac16341adf4e	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs

pid	Process
1708	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
2620	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
1728	explorer.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\tracing\sppsvc.exe	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
File created	C:\Windows\tracing\0a1fd5f707cd16ea89afd3d6db52b2da58214a6c	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 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	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	w32tm.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 10 IoCs

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

persistence execution

Scheduled Task

pid	Process
2676	schtasks.exe
2924	schtasks.exe
2716	schtasks.exe
2848	schtasks.exe
1548	schtasks.exe
2908	schtasks.exe
3060	schtasks.exe
1108	schtasks.exe
2024	schtasks.exe
2928	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1708	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
1708	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
2620	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
2620	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
2620	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
2620	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
2620	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
2620	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe
1728	explorer.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1708	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Token: SeDebugPrivilege	2620	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
Token: SeDebugPrivilege	1728	explorer.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1708 wrote to memory of 2644	1708	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe	35
PID 1708 wrote to memory of 2644	1708	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe	35
PID 1708 wrote to memory of 2644	1708	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe	35
PID 1708 wrote to memory of 2644	1708	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe	35
PID 2644 wrote to memory of 3000	2644	cmd.exe	37
PID 2644 wrote to memory of 3000	2644	cmd.exe	37
PID 2644 wrote to memory of 3000	2644	cmd.exe	37
PID 2644 wrote to memory of 3000	2644	cmd.exe	37
PID 3000 wrote to memory of 2968	3000	w32tm.exe	38
PID 3000 wrote to memory of 2968	3000	w32tm.exe	38
PID 3000 wrote to memory of 2968	3000	w32tm.exe	38
PID 3000 wrote to memory of 2968	3000	w32tm.exe	38
PID 2644 wrote to memory of 2620	2644	cmd.exe	39
PID 2644 wrote to memory of 2620	2644	cmd.exe	39
PID 2644 wrote to memory of 2620	2644	cmd.exe	39
PID 2644 wrote to memory of 2620	2644	cmd.exe	39
PID 2620 wrote to memory of 1728	2620	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe	47
PID 2620 wrote to memory of 1728	2620	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe	47
PID 2620 wrote to memory of 1728	2620	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe	47
PID 2620 wrote to memory of 1728	2620	JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe	47

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⤵
- DcRat
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- 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
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1708
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\uBMujHlZ86.bat"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2644
- - 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:3000
  - - C:\Windows\system32\w32tm.exe
      w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
      4⤵
      PID:2968
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c95ac454cf5cab75cd487ccb82ee5d2a.exe"
    3⤵
    - Identifies VirtualBox via ACPI registry values (likely anti-VM)
    - Checks BIOS information in registry
    - Identifies Wine through registry keys
    - Loads dropped DLL
    - 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 Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2620
  - - C:\MSOCache\All Users\explorer.exe
      "C:\MSOCache\All Users\explorer.exe"
      4⤵
      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:1728

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Documents and Settings\csrss.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2716

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Windows\System32\wmpps\lsass.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2848

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Windows\System32\netbios\smss.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3060

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\System32\NlsData004e\csrss.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1108

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\MSOCache\All Users\explorer.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1548

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\Windows\System32\C_10002\lsm.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2908

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Users\Default User\services.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2676

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Windows\tracing\sppsvc.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2924

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\Users\Public\Recorded TV\Sample Media\lsm.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2024

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\Windows\System32\korean\taskhost.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2928

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

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion