4e4eb36ffc85d36e3b6a5e820e20157e575bc4f2d9790b58ec4c614954cf9bea

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Hardware\Parameters\ServiceDll = "C:\\Windows\\system32\\wtluo.dll"	rundll32.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe

Executes dropped EXE 4 IoCs

pid	Process
3176	rundll2kxp.exe
4456	rundll2kxp.exe
1088	RUNDLL2KXP.EXE
1476	f2.exe

Loads dropped DLL 4 IoCs

pid	Process
3176	rundll2kxp.exe
4456	rundll2kxp.exe
1088	RUNDLL2KXP.EXE
3872	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\System = "C:\\Program Files (x86)\\Common Files\\system\\Updaterun.exe"	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe

Drops file in System32 directory 17 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\wbem\ocmor.dll	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\wbem\ibiwy.dll	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	RUNDLL2KXP.EXE
File opened for modification	C:\Windows\SysWOW64\ocmor.dll	RUNDLL2KXP.EXE
File created	C:\Windows\SysWOW64\Score.txt	RUNDLL2KXP.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	RUNDLL2KXP.EXE
File opened for modification	C:\Windows\SysWOW64\advport.dll	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	RUNDLL2KXP.EXE
File created	C:\Windows\SysWOW64\advport.dll	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\rundll2kxp.exe	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\wbem\ocmor.dll	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\wbem\ibiwy.dll	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe
File opened for modification	C:\WINDOWS\SysWOW64\WBEM\ocmor.dll	RUNDLL2KXP.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	RUNDLL2KXP.EXE
File created	C:\Windows\SysWOW64\rundll2kxp.exe	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\wtluo.dll	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\wtluo.dll	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\system\Updaterun.exe	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe
File created	C:\Program Files (x86)\Common Files\system\Updaterun.exe	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\f2.exe	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\SOFTWARE\Microsoft\Internet Explorer\TypedURLs\url5 = "http://www.3839.com/index.html"	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe

Modifies data under HKEY_USERS 3 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	RUNDLL2KXP.EXE
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	RUNDLL2KXP.EXE
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	RUNDLL2KXP.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4720 wrote to memory of 3176	4720	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe	87
PID 4720 wrote to memory of 3176	4720	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe	87
PID 4720 wrote to memory of 3176	4720	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe	87
PID 4720 wrote to memory of 4456	4720	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe	91
PID 4720 wrote to memory of 4456	4720	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe	91
PID 4720 wrote to memory of 4456	4720	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe	91
PID 4720 wrote to memory of 3872	4720	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe	93
PID 4720 wrote to memory of 3872	4720	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe	93
PID 4720 wrote to memory of 3872	4720	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe	93
PID 4720 wrote to memory of 1476	4720	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe	96
PID 4720 wrote to memory of 1476	4720	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe	96
PID 4720 wrote to memory of 1476	4720	f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe	96

C:\Users\Admin\AppData\Local\Temp\f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f560bd10a1d8dce1a0c65d3c4ca728ea_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
PID:4720
- C:\Windows\SysWOW64\rundll2kxp.exe
  "C:\Windows\system32\rundll2kxp.exe" "C:\Windows\system32\wbem\ibiwy.dll",Export @install
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:3176
- C:\Windows\SysWOW64\rundll2kxp.exe
  "C:\Windows\system32\rundll2kxp.exe" "C:\Windows\system32\wbem\ibiwy.dll",Export @start
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:4456
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\system32\rundll32.exe" "C:\Windows\system32\wtluo.dll",ExportFunc 1001
  2⤵
  - Sets DLL path for service in the registry
  - Loads dropped DLL
  PID:3872
- C:\Windows\f2.exe
  "C:\Windows\f2.exe"
  2⤵
  - Executes dropped EXE
  PID:1476

C:\WINDOWS\SysWOW64\RUNDLL2KXP.EXE
C:\WINDOWS\SysWOW64\RUNDLL2KXP.EXE C:\WINDOWS\SYSTEM32\WBEM\IBIWY.DLL,Export 1087
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:1088

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Defense Evasion

Modify Registry

3

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery