Analysis Overview
SHA256
3f6b6baa3603a5cbe9eea30bc37a5cd7b17132926cc057b947acf6fdd0c01635
Threat Level: Known bad
The file f1b843cc2d7e3ff9331102932f909119_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
Windows security bypass
Tofsee
Modifies Windows Firewall
Sets service image path in registry
Creates new service(s)
Executes dropped EXE
Checks computer location settings
Deletes itself
Suspicious use of SetThreadContext
Launches sc.exe
Program crash
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-15 19:12
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-15 19:12
Reported
2024-04-15 19:14
Platform
win7-20240221-en
Max time kernel
147s
Max time network
147s
Command Line
Signatures
Tofsee
Windows security bypass
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\vvtwrdyq = "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\vvtwrdyq\ImagePath = "C:\\Windows\\SysWOW64\\vvtwrdyq\\sktbylxr.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\vvtwrdyq\sktbylxr.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2716 set thread context of 2172 | N/A | C:\Windows\SysWOW64\vvtwrdyq\sktbylxr.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
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f1b843cc2d7e3ff9331102932f909119_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f1b843cc2d7e3ff9331102932f909119_JaffaCakes118.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vvtwrdyq\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sktbylxr.exe" C:\Windows\SysWOW64\vvtwrdyq\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create vvtwrdyq binPath= "C:\Windows\SysWOW64\vvtwrdyq\sktbylxr.exe /d\"C:\Users\Admin\AppData\Local\Temp\f1b843cc2d7e3ff9331102932f909119_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description vvtwrdyq "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start vvtwrdyq
C:\Windows\SysWOW64\vvtwrdyq\sktbylxr.exe
C:\Windows\SysWOW64\vvtwrdyq\sktbylxr.exe /d"C:\Users\Admin\AppData\Local\Temp\f1b843cc2d7e3ff9331102932f909119_JaffaCakes118.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 | 20.112.250.133:80 | 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 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | yahoo.com | udp |
| US | 8.8.8.8:53 | mta5.am0.yahoodns.net | udp |
| US | 98.136.96.77:25 | mta5.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| NL | 142.250.145.27:25 | 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 |
| US | 8.8.8.8:53 | refabyd.info | udp |
Files
memory/1128-1-0x0000000000530000-0x0000000000630000-memory.dmp
memory/1128-3-0x0000000000220000-0x0000000000233000-memory.dmp
memory/1128-4-0x0000000000400000-0x0000000000468000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sktbylxr.exe
| MD5 | 8659d4cddb70df413a9c73b86f51ef9c |
| SHA1 | 7c913e32b8f907db6622e4cba897a288412c5e57 |
| SHA256 | b3ab13b8cf464e6265f3a8fa8913d4ccd6a7e0286abed0059c9214603ef71c41 |
| SHA512 | a0247136ab0403d1be8b6ab16233575e677e3cb0a72f16aaf441074d6e0de8f9b543a2fd44c07a52e0c0b667a36a497943b54d0b6fb8e0150b8afdb1582dfa08 |
memory/1128-8-0x0000000000400000-0x0000000000468000-memory.dmp
memory/2716-10-0x0000000000570000-0x0000000000670000-memory.dmp
memory/2716-12-0x0000000000400000-0x0000000000468000-memory.dmp
memory/2172-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2172-9-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2172-14-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2172-19-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2716-17-0x0000000000400000-0x0000000000468000-memory.dmp
memory/2172-20-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2172-21-0x0000000000080000-0x0000000000095000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-15 19:12
Reported
2024-04-15 19:14
Platform
win10v2004-20240412-en
Max time kernel
151s
Max time network
150s
Command Line
Signatures
Tofsee
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\ejwgcusw\ImagePath = "C:\\Windows\\SysWOW64\\ejwgcusw\\neexnmnb.exe" | C:\Windows\SysWOW64\ejwgcusw\neexnmnb.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-553605503-2331009851-2137262461-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\f1b843cc2d7e3ff9331102932f909119_JaffaCakes118.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\ejwgcusw\neexnmnb.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2608 set thread context of 4492 | N/A | C:\Windows\SysWOW64\ejwgcusw\neexnmnb.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
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\f1b843cc2d7e3ff9331102932f909119_JaffaCakes118.exe |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\ejwgcusw\neexnmnb.exe |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f1b843cc2d7e3ff9331102932f909119_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f1b843cc2d7e3ff9331102932f909119_JaffaCakes118.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ejwgcusw\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\neexnmnb.exe" C:\Windows\SysWOW64\ejwgcusw\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create ejwgcusw binPath= "C:\Windows\SysWOW64\ejwgcusw\neexnmnb.exe /d\"C:\Users\Admin\AppData\Local\Temp\f1b843cc2d7e3ff9331102932f909119_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description ejwgcusw "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start ejwgcusw
C:\Windows\SysWOW64\ejwgcusw\neexnmnb.exe
C:\Windows\SysWOW64\ejwgcusw\neexnmnb.exe /d"C:\Users\Admin\AppData\Local\Temp\f1b843cc2d7e3ff9331102932f909119_JaffaCakes118.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 448 -p 4656 -ip 4656
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4656 -s 1036
C:\Windows\SysWOW64\svchost.exe
svchost.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 2608 -ip 2608
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2608 -s 516
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | microsoft.com | udp |
| US | 20.112.250.133:80 | 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 | 133.250.112.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 68.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | 145.83.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.114.53.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 159.113.53.23.in-addr.arpa | 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 | mta7.am0.yahoodns.net | udp |
| US | 67.195.204.74:25 | mta7.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | 21.121.18.2.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 | 142.250.145.26:25 | smtp.google.com | tcp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | 23.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | refabyd.info | 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 | 172.210.232.199.in-addr.arpa | 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 | refabyd.info | 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 | 209.143.182.52.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 | defeatwax.ru | udp |
Files
memory/4656-1-0x0000000000640000-0x0000000000740000-memory.dmp
memory/4656-2-0x00000000004F0000-0x0000000000503000-memory.dmp
memory/4656-3-0x0000000000400000-0x0000000000468000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\neexnmnb.exe
| MD5 | cb7e48510c2495afbebd02f8a12123f3 |
| SHA1 | 6af9e3ef99502131ec2a3ddc10c7fe4a77c288d6 |
| SHA256 | 2bdf84faad80a10633b0ccbacdf0e279d6adeabe0ef76768d5ae186cd58a7b16 |
| SHA512 | 4796248e362da4ca66341f46e2a4d6ae7b4d2651ea2cd21b93786c6543c56cbc736427372f829c181a78f5101a68b3cad4c41f49c801aeb25b7805711ff85265 |
memory/4656-8-0x0000000000400000-0x0000000000468000-memory.dmp
memory/4656-9-0x00000000004F0000-0x0000000000503000-memory.dmp
memory/2608-10-0x00000000005F0000-0x00000000006F0000-memory.dmp
memory/2608-11-0x0000000000400000-0x0000000000468000-memory.dmp
memory/4492-12-0x0000000000B60000-0x0000000000B75000-memory.dmp
memory/4492-15-0x0000000000B60000-0x0000000000B75000-memory.dmp
memory/4492-16-0x0000000000B60000-0x0000000000B75000-memory.dmp
memory/4492-17-0x0000000000B60000-0x0000000000B75000-memory.dmp
memory/2608-18-0x0000000000400000-0x0000000000468000-memory.dmp
memory/4492-19-0x0000000000B60000-0x0000000000B75000-memory.dmp