Analysis Overview
SHA256
d295cb6824f3b1dee15da5e235dd3af4cd06c839a7c56adf62be284c4763ac7a
Threat Level: Known bad
The file f1efb145c5dda056d48a9442dc04926a_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
Windows security bypass
Tofsee
Modifies Windows Firewall
Creates new service(s)
Sets service image path in registry
Checks computer location settings
Deletes itself
Executes dropped EXE
Suspicious use of SetThreadContext
Launches sc.exe
Program crash
Enumerates physical storage devices
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-15 21:13
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-15 21:13
Reported
2024-04-15 21:15
Platform
win7-20240221-en
Max time kernel
150s
Max time network
153s
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\fnanyjbx = "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\fnanyjbx\ImagePath = "C:\\Windows\\SysWOW64\\fnanyjbx\\mkussirh.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\fnanyjbx\mkussirh.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2680 set thread context of 2152 | N/A | C:\Windows\SysWOW64\fnanyjbx\mkussirh.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\f1efb145c5dda056d48a9442dc04926a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f1efb145c5dda056d48a9442dc04926a_JaffaCakes118.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fnanyjbx\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mkussirh.exe" C:\Windows\SysWOW64\fnanyjbx\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create fnanyjbx binPath= "C:\Windows\SysWOW64\fnanyjbx\mkussirh.exe /d\"C:\Users\Admin\AppData\Local\Temp\f1efb145c5dda056d48a9442dc04926a_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description fnanyjbx "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start fnanyjbx
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\fnanyjbx\mkussirh.exe
C:\Windows\SysWOW64\fnanyjbx\mkussirh.exe /d"C:\Users\Admin\AppData\Local\Temp\f1efb145c5dda056d48a9442dc04926a_JaffaCakes118.exe"
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 | 52.101.8.49:25 | 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 | mta5.am0.yahoodns.net | udp |
| US | 67.195.228.94:25 | 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 | 108.177.96.27:25 | 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/2504-1-0x00000000009C0000-0x0000000000AC0000-memory.dmp
memory/2504-2-0x0000000000020000-0x0000000000033000-memory.dmp
memory/2504-4-0x0000000000400000-0x0000000000870000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\mkussirh.exe
| MD5 | c18c827af8695a2dce81987502ca0022 |
| SHA1 | 522d2e9cdd407521e001bf4bc4a02f52ae264621 |
| SHA256 | 9b9254b89c5da61e9dd9f4417dd636ca0519474e40015a5b92cc412cf48bda7f |
| SHA512 | dd1dff64a013c014eeba464b6e9eec9e90ffe51280dc1aac4c768f8c733cde44920f574876f2486f8d1c84e338c6b43077ceb132d7b5c007d6b284ec4975857a |
memory/2504-6-0x0000000000400000-0x0000000000870000-memory.dmp
memory/2504-7-0x00000000009C0000-0x0000000000AC0000-memory.dmp
memory/2504-10-0x0000000000020000-0x0000000000033000-memory.dmp
memory/2680-12-0x0000000000230000-0x0000000000330000-memory.dmp
memory/2152-11-0x00000000000C0000-0x00000000000D5000-memory.dmp
memory/2152-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2680-14-0x0000000000400000-0x0000000000870000-memory.dmp
memory/2152-16-0x00000000000C0000-0x00000000000D5000-memory.dmp
memory/2680-17-0x0000000000400000-0x0000000000870000-memory.dmp
memory/2152-20-0x00000000000C0000-0x00000000000D5000-memory.dmp
memory/2152-21-0x00000000000C0000-0x00000000000D5000-memory.dmp
memory/2152-22-0x00000000000C0000-0x00000000000D5000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-15 21:13
Reported
2024-04-15 21:15
Platform
win10v2004-20240412-en
Max time kernel
150s
Max time network
151s
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\arrsxkc\ImagePath = "C:\\Windows\\SysWOW64\\arrsxkc\\kngomowg.exe" | C:\Windows\SysWOW64\svchost.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\f1efb145c5dda056d48a9442dc04926a_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\arrsxkc\kngomowg.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2612 set thread context of 2220 | N/A | C:\Windows\SysWOW64\arrsxkc\kngomowg.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\f1efb145c5dda056d48a9442dc04926a_JaffaCakes118.exe |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\arrsxkc\kngomowg.exe |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f1efb145c5dda056d48a9442dc04926a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f1efb145c5dda056d48a9442dc04926a_JaffaCakes118.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\arrsxkc\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kngomowg.exe" C:\Windows\SysWOW64\arrsxkc\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create arrsxkc binPath= "C:\Windows\SysWOW64\arrsxkc\kngomowg.exe /d\"C:\Users\Admin\AppData\Local\Temp\f1efb145c5dda056d48a9442dc04926a_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description arrsxkc "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start arrsxkc
C:\Windows\SysWOW64\arrsxkc\kngomowg.exe
C:\Windows\SysWOW64\arrsxkc\kngomowg.exe /d"C:\Users\Admin\AppData\Local\Temp\f1efb145c5dda056d48a9442dc04926a_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 480 -p 3064 -ip 3064
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3064 -s 1196
C:\Windows\SysWOW64\svchost.exe
svchost.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2612 -ip 2612
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2612 -s 512
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 163.233.34.23.in-addr.arpa | udp |
| 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 | 133.250.112.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | microsoft-com.mail.protection.outlook.com | udp |
| US | 104.47.53.36:25 | microsoft-com.mail.protection.outlook.com | tcp |
| 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 | mta7.am0.yahoodns.net | udp |
| US | 98.136.96.74:25 | mta7.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.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 | 108.177.96.27:25 | 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 | 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 |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 52.111.227.13:443 | tcp | |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | 30.243.111.52.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 | |
| US | 8.8.8.8:53 | udp |
Files
memory/3064-2-0x00000000001E0000-0x00000000001F3000-memory.dmp
memory/3064-1-0x0000000000A90000-0x0000000000B90000-memory.dmp
memory/3064-4-0x0000000000400000-0x0000000000870000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\kngomowg.exe
| MD5 | 100ac28655dc1a450f58eae99b92a74f |
| SHA1 | c498269629af96740ba8b5de327590498ac46586 |
| SHA256 | 2a9d43ff1c8bf5965e8e7425ef04710b0225abaa72b36656374f0dc244a109cd |
| SHA512 | 1013281f9965d68c1e1445fea64b94e438919f7f2936aaa467725671acfe690cfb875be3df55efb8ed999942f565b95fcddbc56b5df21067d53668060a9df176 |
memory/3064-8-0x0000000000400000-0x0000000000870000-memory.dmp
memory/3064-9-0x00000000001E0000-0x00000000001F3000-memory.dmp
memory/2612-10-0x00000000009A0000-0x0000000000AA0000-memory.dmp
memory/2612-12-0x0000000000400000-0x0000000000870000-memory.dmp
memory/2220-11-0x00000000004B0000-0x00000000004C5000-memory.dmp
memory/2220-16-0x00000000004B0000-0x00000000004C5000-memory.dmp
memory/2612-17-0x0000000000400000-0x0000000000870000-memory.dmp
memory/2220-18-0x00000000004B0000-0x00000000004C5000-memory.dmp
memory/2220-19-0x00000000004B0000-0x00000000004C5000-memory.dmp