Analysis Overview
SHA256
3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448
Threat Level: Known bad
The file JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448 was found to be: Known bad.
Malicious Activity Summary
Tofsee family
Windows security bypass
Tofsee
Creates new service(s)
Modifies Windows Firewall
Sets service image path in registry
Checks computer location settings
Executes dropped EXE
Deletes itself
Suspicious use of SetThreadContext
Launches sc.exe
System Location Discovery: System Language Discovery
Unsigned PE
Program crash
Event Triggered Execution: Netsh Helper DLL
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-12-29 11:44
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-12-29 11:44
Reported
2024-12-29 11:46
Platform
win7-20240903-en
Max time kernel
149s
Max time network
149s
Command Line
Signatures
Tofsee
Tofsee family
Windows security bypass
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\rxfyjeuo = "0" | C:\Windows\SysWOW64\svchost.exe | N/A |
Creates new service(s)
Modifies Windows Firewall
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\netsh.exe | N/A |
Sets service image path in registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\rxfyjeuo\ImagePath = "C:\\Windows\\SysWOW64\\rxfyjeuo\\ceynjfbs.exe" | C:\Windows\SysWOW64\svchost.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\svchost.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rxfyjeuo\ceynjfbs.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 824 set thread context of 876 | N/A | C:\Windows\SysWOW64\rxfyjeuo\ceynjfbs.exe | C:\Windows\SysWOW64\svchost.exe |
Launches sc.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\sc.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\sc.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\sc.exe | N/A |
Enumerates physical storage devices
Event Triggered Execution: Netsh Helper DLL
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key queried | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key value enumerated | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\sc.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\sc.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\sc.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\rxfyjeuo\ceynjfbs.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\svchost.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rxfyjeuo\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ceynjfbs.exe" C:\Windows\SysWOW64\rxfyjeuo\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create rxfyjeuo binPath= "C:\Windows\SysWOW64\rxfyjeuo\ceynjfbs.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description rxfyjeuo "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start rxfyjeuo
C:\Windows\SysWOW64\rxfyjeuo\ceynjfbs.exe
C:\Windows\SysWOW64\rxfyjeuo\ceynjfbs.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe"
C:\Windows\SysWOW64\netsh.exe
"C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
C:\Windows\SysWOW64\svchost.exe
svchost.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | microsoft.com | udp |
| AU | 20.70.246.20:80 | microsoft.com | tcp |
| US | 8.8.8.8:53 | microsoft.com | udp |
| US | 8.8.8.8:53 | microsoft-com.mail.protection.outlook.com | udp |
| US | 52.101.8.49:25 | microsoft-com.mail.protection.outlook.com | tcp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | yahoo.com | udp |
| US | 8.8.8.8:53 | mta5.am0.yahoodns.net | udp |
| US | 67.195.228.110:25 | mta5.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| NL | 142.250.27.26:25 | smtp.google.com | tcp |
| US | 8.8.8.8:53 | mail.ru | udp |
| US | 8.8.8.8:53 | mxs.mail.ru | udp |
| RU | 217.69.139.150:25 | mxs.mail.ru | tcp |
Files
memory/1812-0-0x0000000000220000-0x000000000022D000-memory.dmp
memory/1812-1-0x00000000002B0000-0x00000000002C3000-memory.dmp
memory/1812-2-0x0000000000400000-0x0000000000415000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\ceynjfbs.exe
| MD5 | 23257bccb52f826daf610d05d589fccc |
| SHA1 | 8dd7f84565961293710364710bed6ef375f8315e |
| SHA256 | b953b3cb81b2107c6871f77a94ddf782aad57f996715906de4e81f8227770c26 |
| SHA512 | d7918296d38c44a78e2eb8b947a911bd52f1f2e233e271f7e492c55aa02055889051439f85f050dfaf6d29d87bc3479fd37742e8522bb1e9c61232365939b7e7 |
memory/1812-9-0x0000000000400000-0x0000000000415000-memory.dmp
memory/1812-8-0x00000000002B0000-0x00000000002C3000-memory.dmp
memory/1812-7-0x0000000000220000-0x000000000022D000-memory.dmp
memory/1812-6-0x0000000000400000-0x0000000000447000-memory.dmp
memory/876-10-0x0000000000080000-0x0000000000095000-memory.dmp
memory/876-13-0x0000000000080000-0x0000000000095000-memory.dmp
memory/876-15-0x0000000000080000-0x0000000000095000-memory.dmp
memory/824-16-0x0000000000400000-0x0000000000447000-memory.dmp
memory/876-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/876-17-0x0000000000080000-0x0000000000095000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-12-29 11:44
Reported
2024-12-29 11:46
Platform
win10v2004-20241007-en
Max time kernel
149s
Max time network
144s
Command Line
Signatures
Tofsee
Tofsee family
Creates new service(s)
Modifies Windows Firewall
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\netsh.exe | N/A |
Sets service image path in registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\cfudxtht\ImagePath = "C:\\Windows\\SysWOW64\\cfudxtht\\urchfpmj.exe" | C:\Windows\SysWOW64\svchost.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\svchost.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cfudxtht\urchfpmj.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 628 set thread context of 2168 | N/A | C:\Windows\SysWOW64\cfudxtht\urchfpmj.exe | C:\Windows\SysWOW64\svchost.exe |
Launches sc.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\sc.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\sc.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\sc.exe | N/A |
Enumerates physical storage devices
Event Triggered Execution: Netsh Helper DLL
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key queried | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key value enumerated | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\cfudxtht\urchfpmj.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\sc.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\sc.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cfudxtht\urchfpmj.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\svchost.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\sc.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cfudxtht\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\urchfpmj.exe" C:\Windows\SysWOW64\cfudxtht\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create cfudxtht binPath= "C:\Windows\SysWOW64\cfudxtht\urchfpmj.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description cfudxtht "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start cfudxtht
C:\Windows\SysWOW64\cfudxtht\urchfpmj.exe
C:\Windows\SysWOW64\cfudxtht\urchfpmj.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe"
C:\Windows\SysWOW64\netsh.exe
"C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2144 -ip 2144
C:\Windows\SysWOW64\svchost.exe
svchost.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 628 -ip 628
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2144 -s 1036
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 628 -s 512
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 71.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | microsoft.com | udp |
| US | 20.236.44.162:80 | microsoft.com | tcp |
| US | 8.8.8.8:53 | microsoft.com | udp |
| US | 8.8.8.8:53 | microsoft-com.mail.protection.outlook.com | udp |
| US | 52.101.11.0:25 | microsoft-com.mail.protection.outlook.com | tcp |
| US | 8.8.8.8:53 | 162.44.236.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | yahoo.com | udp |
| US | 8.8.8.8:53 | mta5.am0.yahoodns.net | udp |
| US | 67.195.204.72:25 | mta5.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | 200.163.202.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.42.69.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.49.80.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| NL | 142.250.27.26:25 | smtp.google.com | tcp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | 85.49.80.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | mail.ru | udp |
| US | 8.8.8.8:53 | mxs.mail.ru | udp |
| RU | 217.69.139.150:25 | mxs.mail.ru | tcp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | 83.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | 19.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | lakeflex.ru | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | quadoil.ru | udp |
| US | 8.8.8.8:53 | udp |
Files
memory/2144-0-0x0000000000570000-0x000000000057D000-memory.dmp
memory/2144-1-0x00000000021B0000-0x00000000021C3000-memory.dmp
memory/2144-2-0x0000000000400000-0x0000000000415000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\urchfpmj.exe
| MD5 | 6ae64fbedb1b41e5c94efac7dd355163 |
| SHA1 | 1c7f61f43867e39db4feaacf73e22562cf3fb3fd |
| SHA256 | 3ad9abce773bf7fcfd45cfd021d755e05764012e2514b06b6d76b296cf7a5bf1 |
| SHA512 | ab1eeec9715e9d172aa034a5253d15b7b999e67d2ce98b6bcbaf4649869a8fe1e6882903d7b5ee81865a1612c5f455a69b9f53998223ede896020568d5ccc410 |
memory/628-6-0x0000000000400000-0x0000000000447000-memory.dmp
memory/628-8-0x0000000000400000-0x0000000000447000-memory.dmp
memory/2168-9-0x0000000000E60000-0x0000000000E75000-memory.dmp
memory/2168-12-0x0000000000E60000-0x0000000000E75000-memory.dmp
memory/628-7-0x0000000000400000-0x0000000000447000-memory.dmp
memory/2144-15-0x00000000021B0000-0x00000000021C3000-memory.dmp
memory/2144-16-0x0000000000400000-0x0000000000415000-memory.dmp
memory/2144-14-0x0000000000570000-0x000000000057D000-memory.dmp
memory/2144-13-0x0000000000400000-0x0000000000447000-memory.dmp
memory/628-18-0x0000000000400000-0x0000000000447000-memory.dmp
memory/2168-19-0x0000000000E60000-0x0000000000E75000-memory.dmp
memory/2168-20-0x0000000000E60000-0x0000000000E75000-memory.dmp
memory/2168-21-0x0000000000E60000-0x0000000000E75000-memory.dmp