dcrat | 0d926f7f14556e0fcbf2bf4af5df95dd23f8dd855ef09fe3f1dd6b8978d26488

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	OfficeClickToRun.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	OfficeClickToRun.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	OfficeClickToRun.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe

Executes dropped EXE 1 IoCs

pid	Process
2976	OfficeClickToRun.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-1-5-21-4089630652-1596403869-279772308-1000\Software\Wine	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Wine	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Wine	OfficeClickToRun.exe

Adds Run key to start application 2 TTPs 11 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\spoolsv = "\"C:\\Windows\\System32\\MSAC3ENC\\spoolsv.exe\""	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\OfficeClickToRun = "\"C:\\Users\\Default User\\OfficeClickToRun.exe\""	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\services = "\"C:\\Documents and Settings\\services.exe\""	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SearchApp = "\"C:\\Windows\\PolicyDefinitions\\ja-JP\\SearchApp.exe\""	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\sysmon = "\"C:\\Windows\\regedit\\sysmon.exe\""	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Recovery\\WindowsRE\\RuntimeBroker.exe\""	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\explorer = "\"C:\\Windows\\splwow64\\explorer.exe\""	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\upfc = "\"C:\\ProgramData\\Package Cache\\{79043ED0-7ED1-4227-A5E5-04C5594D21F7}v48.108.8828\\upfc.exe\""	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\spoolsv = "\"C:\\Windows\\System32\\tttracer\\spoolsv.exe\""	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\WmiPrvSE = "\"C:\\Windows\\IME\\uk-UA\\WmiPrvSE.exe\""	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Windows\\System32\\PresentationHost\\RuntimeBroker.exe\""	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe

Drops file in System32 directory 7 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\MSAC3ENC\f3b6ecef712a24f33798f5d2fb3790c3d9b894c4	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
File created	C:\Windows\SysWOW64\tttracer\spoolsv.exe	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
File created	C:\Windows\SysWOW64\tttracer\f3b6ecef712a24f33798f5d2fb3790c3d9b894c4	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
File created	C:\Windows\SysWOW64\PresentationHost\RuntimeBroker.exe	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
File created	C:\Windows\SysWOW64\PresentationHost\9e8d7a4ca61bd92aff00cc37a7a4d62a2cac998d	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
File created	C:\Windows\SysWOW64\MSAC3ENC\spoolsv.exe	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
File opened for modification	C:\Windows\SysWOW64\MSAC3ENC\spoolsv.exe	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs

pid	Process
32	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
2332	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
2976	OfficeClickToRun.exe

Drops file in Windows directory 8 IoCs

description	ioc	Process
File created	C:\Windows\PolicyDefinitions\ja-JP\38384e6a620884a6b69bcc56f80d556f9200171c	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
File created	C:\Windows\regedit\sysmon.exe	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
File created	C:\Windows\regedit\121e5b5079f7c0e46d90f99b3864022518bbbda9	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
File created	C:\Windows\splwow64\explorer.exe	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
File created	C:\Windows\splwow64\7a0fd90576e08807bde2cc57bcf9854bbce05fe3	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
File created	C:\Windows\IME\uk-UA\WmiPrvSE.exe	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
File created	C:\Windows\IME\uk-UA\24dbde2999530ef5fd907494bc374d663924116c	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
File created	C:\Windows\PolicyDefinitions\ja-JP\SearchApp.exe	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.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 7 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	OfficeClickToRun.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
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	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.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 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000_Classes\Local Settings	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000_Classes\Local Settings	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 11 IoCs

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

persistence execution

Scheduled Task

pid	Process
3152	schtasks.exe
3996	schtasks.exe
2540	schtasks.exe
2988	schtasks.exe
1804	schtasks.exe
1692	schtasks.exe
3140	schtasks.exe
4004	schtasks.exe
3288	schtasks.exe
1244	schtasks.exe
3568	schtasks.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
32	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
32	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
32	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
32	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
32	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
2332	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
2332	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
2332	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
2976	OfficeClickToRun.exe
2976	OfficeClickToRun.exe
2976	OfficeClickToRun.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	32	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
Token: SeDebugPrivilege	2332	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
Token: SeDebugPrivilege	2976	OfficeClickToRun.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 32 wrote to memory of 1328	32	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe	90
PID 32 wrote to memory of 1328	32	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe	90
PID 32 wrote to memory of 1328	32	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe	90
PID 1328 wrote to memory of 4056	1328	cmd.exe	92
PID 1328 wrote to memory of 4056	1328	cmd.exe	92
PID 1328 wrote to memory of 4056	1328	cmd.exe	92
PID 4056 wrote to memory of 2116	4056	w32tm.exe	93
PID 4056 wrote to memory of 2116	4056	w32tm.exe	93
PID 1328 wrote to memory of 2332	1328	cmd.exe	94
PID 1328 wrote to memory of 2332	1328	cmd.exe	94
PID 1328 wrote to memory of 2332	1328	cmd.exe	94
PID 2332 wrote to memory of 2716	2332	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe	101
PID 2332 wrote to memory of 2716	2332	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe	101
PID 2332 wrote to memory of 2716	2332	JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe	101
PID 2716 wrote to memory of 448	2716	cmd.exe	103
PID 2716 wrote to memory of 448	2716	cmd.exe	103
PID 2716 wrote to memory of 448	2716	cmd.exe	103
PID 448 wrote to memory of 2324	448	w32tm.exe	104
PID 448 wrote to memory of 2324	448	w32tm.exe	104
PID 2716 wrote to memory of 2976	2716	cmd.exe	109
PID 2716 wrote to memory of 2976	2716	cmd.exe	109
PID 2716 wrote to memory of 2976	2716	cmd.exe	109

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_f4d16e7236887920d01ac59230bc6cf7.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe"
1⤵
- DcRat
- 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 Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:32
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\gEII4JvH6p.bat"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1328
- - 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:4056
  - - C:\Windows\system32\w32tm.exe
      w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
      4⤵
      PID:2116
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4d16e7236887920d01ac59230bc6cf7.exe"
    3⤵
    - 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 Windows directory
    - System Location Discovery: System Language Discovery
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2332
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\RkOdXAZlJg.bat"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2716
    - - C:\Windows\SysWOW64\w32tm.exe
        
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:448
      - C:\Windows\system32\w32tm.exe
        
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        6⤵
        
        PID:2324
    - - C:\Users\Default User\OfficeClickToRun.exe
        
        "C:\Users\Default User\OfficeClickToRun.exe"
        5⤵
        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:2976

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Windows\System32\MSAC3ENC\spoolsv.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3140

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Windows\PolicyDefinitions\ja-JP\SearchApp.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3152

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Windows\regedit\sysmon.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4004

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3288

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Windows\splwow64\explorer.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3996

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "upfc" /sc ONLOGON /tr "'C:\ProgramData\Package Cache\{79043ED0-7ED1-4227-A5E5-04C5594D21F7}v48.108.8828\upfc.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2540

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Windows\System32\tttracer\spoolsv.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2988

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\Users\Default User\OfficeClickToRun.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1244

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Documents and Settings\services.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1804

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Windows\IME\uk-UA\WmiPrvSE.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1692

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\System32\PresentationHost\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3568

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