Analysis Overview
SHA256
19bcbeb0b9f81c775fa96cddac76e5d3a55f65ed580ea93d452e656f3d1231e2
Threat Level: Known bad
The file JaffaCakes118_19bcbeb0b9f81c775fa96cddac76e5d3a55f65ed580ea93d452e656f3d1231e2 was found to be: Known bad.
Malicious Activity Summary
Tofsee family
Tofsee
Windows security bypass
Creates new service(s)
Modifies Windows Firewall
Sets service image path in registry
Executes dropped EXE
Deletes itself
Checks computer location settings
Suspicious use of SetThreadContext
Launches sc.exe
Event Triggered Execution: Netsh Helper DLL
Unsigned PE
Program crash
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-12-29 22:25
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-12-29 22:25
Reported
2024-12-29 22:27
Platform
win7-20241010-en
Max time kernel
149s
Max time network
153s
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\wzemapyn = "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\wzemapyn\ImagePath = "C:\\Windows\\SysWOW64\\wzemapyn\\wbxpnqc.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\wzemapyn\wbxpnqc.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2924 set thread context of 2936 | N/A | C:\Windows\SysWOW64\wzemapyn\wbxpnqc.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:\Windows\SysWOW64\svchost.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\sc.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\wzemapyn\wbxpnqc.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_19bcbeb0b9f81c775fa96cddac76e5d3a55f65ed580ea93d452e656f3d1231e2.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 |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_19bcbeb0b9f81c775fa96cddac76e5d3a55f65ed580ea93d452e656f3d1231e2.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_19bcbeb0b9f81c775fa96cddac76e5d3a55f65ed580ea93d452e656f3d1231e2.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wzemapyn\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wbxpnqc.exe" C:\Windows\SysWOW64\wzemapyn\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create wzemapyn binPath= "C:\Windows\SysWOW64\wzemapyn\wbxpnqc.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_19bcbeb0b9f81c775fa96cddac76e5d3a55f65ed580ea93d452e656f3d1231e2.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description wzemapyn "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start wzemapyn
C:\Windows\SysWOW64\wzemapyn\wbxpnqc.exe
C:\Windows\SysWOW64\wzemapyn\wbxpnqc.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_19bcbeb0b9f81c775fa96cddac76e5d3a55f65ed580ea93d452e656f3d1231e2.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 |
| 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 | 52.101.8.49:25 | microsoft-com.mail.protection.outlook.com | tcp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | yahoo.com | udp |
| US | 8.8.8.8:53 | mta6.am0.yahoodns.net | udp |
| US | 98.136.96.74:25 | mta6.am0.yahoodns.net | tcp |
| 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 | 94.100.180.31:25 | mxs.mail.ru | tcp |
| US | 8.8.8.8:53 | refabyd.info | udp |
Files
memory/2240-1-0x0000000002E60000-0x0000000002F60000-memory.dmp
memory/2240-2-0x0000000000220000-0x0000000000233000-memory.dmp
memory/2240-3-0x0000000000400000-0x0000000000415000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\wbxpnqc.exe
| MD5 | 3c638db491d441b160b680369336cee7 |
| SHA1 | b19ae6819e90a976cdbf7c8be7177d9b8f584a2e |
| SHA256 | 1da157ae692efd22c8dc3e763fa534e9fdd71e13b99608f7bbec6ee678e894af |
| SHA512 | cae7c2e59aea140e7df8d1bf7e623cbc9f5a40dc9e16077bf40ccd8020abe767912cf6b70d6d2b5d71081eb55d8b39da08596412636f382fabd4fa02ac71b27c |
memory/2240-10-0x0000000000400000-0x0000000000415000-memory.dmp
memory/2240-9-0x0000000000220000-0x0000000000233000-memory.dmp
memory/2240-8-0x0000000000400000-0x0000000002D9C000-memory.dmp
memory/2936-14-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2936-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2936-11-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2936-17-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2936-18-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2924-16-0x0000000000400000-0x0000000002D9C000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-12-29 22:25
Reported
2024-12-29 22:27
Platform
win10v2004-20241007-en
Max time kernel
149s
Max time network
149s
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\ykmmpexx\ImagePath = "C:\\Windows\\SysWOW64\\ykmmpexx\\gsztyerz.exe" | C:\Windows\SysWOW64\svchost.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_19bcbeb0b9f81c775fa96cddac76e5d3a55f65ed580ea93d452e656f3d1231e2.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\ykmmpexx\gsztyerz.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4432 set thread context of 4052 | N/A | C:\Windows\SysWOW64\ykmmpexx\gsztyerz.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_19bcbeb0b9f81c775fa96cddac76e5d3a55f65ed580ea93d452e656f3d1231e2.exe |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\ykmmpexx\gsztyerz.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| 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\ykmmpexx\gsztyerz.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_19bcbeb0b9f81c775fa96cddac76e5d3a55f65ed580ea93d452e656f3d1231e2.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\netsh.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_19bcbeb0b9f81c775fa96cddac76e5d3a55f65ed580ea93d452e656f3d1231e2.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_19bcbeb0b9f81c775fa96cddac76e5d3a55f65ed580ea93d452e656f3d1231e2.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ykmmpexx\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gsztyerz.exe" C:\Windows\SysWOW64\ykmmpexx\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create ykmmpexx binPath= "C:\Windows\SysWOW64\ykmmpexx\gsztyerz.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_19bcbeb0b9f81c775fa96cddac76e5d3a55f65ed580ea93d452e656f3d1231e2.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description ykmmpexx "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start ykmmpexx
C:\Windows\SysWOW64\ykmmpexx\gsztyerz.exe
C:\Windows\SysWOW64\ykmmpexx\gsztyerz.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_19bcbeb0b9f81c775fa96cddac76e5d3a55f65ed580ea93d452e656f3d1231e2.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 456 -p 1144 -ip 1144
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1144 -s 784
C:\Windows\SysWOW64\svchost.exe
svchost.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4432 -ip 4432
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4432 -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 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 64.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.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 | 52.101.42.0:25 | 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 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | yahoo.com | udp |
| US | 8.8.8.8:53 | mta5.am0.yahoodns.net | udp |
| US | 67.195.204.73:25 | mta5.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | 53.210.109.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.190.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| NL | 142.250.27.27:25 | smtp.google.com | tcp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mail.ru | udp |
| US | 8.8.8.8:53 | mxs.mail.ru | udp |
| RU | 94.100.180.31:25 | mxs.mail.ru | tcp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | udp |
Files
memory/1144-1-0x0000000002E60000-0x0000000002F60000-memory.dmp
memory/1144-2-0x0000000004AE0000-0x0000000004AF3000-memory.dmp
memory/1144-3-0x0000000000400000-0x0000000000415000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\gsztyerz.exe
| MD5 | 4450f40d1f4445a581de3c8e375a22c4 |
| SHA1 | 4547f15b81c201691b2905a4982f03fbe4867c6a |
| SHA256 | 9b04b3006d49414b8573a6a9672eaf5cee889a7410068f4417b111783a99b24e |
| SHA512 | 2ab65e693b25973bd7396cb34d4c172e546865b99f25b6c00e95aa714d5c482e59eff5b591d2fc8c4e359da7afb37e06b65f875b699c2ff253b68fe7a42acb70 |
memory/1144-10-0x0000000000400000-0x0000000000415000-memory.dmp
memory/1144-9-0x0000000004AE0000-0x0000000004AF3000-memory.dmp
memory/1144-8-0x0000000000400000-0x0000000002D9C000-memory.dmp
memory/4052-11-0x0000000000A90000-0x0000000000AA5000-memory.dmp
memory/4052-13-0x0000000000A90000-0x0000000000AA5000-memory.dmp
memory/4052-14-0x0000000000A90000-0x0000000000AA5000-memory.dmp
memory/4432-15-0x0000000000400000-0x0000000002D9C000-memory.dmp