Analysis Overview
SHA256
1c080453192d6860817dfd3f7d55054a384f0c5b51661212f38adcb0c6f612bf
Threat Level: Known bad
The file f31ff6f68ebe392291dbb6214ea9ff92_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
Deletes itself
Checks computer location settings
Executes dropped EXE
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
2024-04-16 08:47
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-16 08:47
Reported
2024-04-16 08:50
Platform
win7-20240221-en
Max time kernel
147s
Max time network
122s
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\gypfpcgb = "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\gypfpcgb\ImagePath = "C:\\Windows\\SysWOW64\\gypfpcgb\\adjdsdou.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\gypfpcgb\adjdsdou.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2748 set thread context of 2560 | N/A | C:\Windows\SysWOW64\gypfpcgb\adjdsdou.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\f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gypfpcgb\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\adjdsdou.exe" C:\Windows\SysWOW64\gypfpcgb\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create gypfpcgb binPath= "C:\Windows\SysWOW64\gypfpcgb\adjdsdou.exe /d\"C:\Users\Admin\AppData\Local\Temp\f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description gypfpcgb "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start gypfpcgb
C:\Windows\SysWOW64\gypfpcgb\adjdsdou.exe
C:\Windows\SysWOW64\gypfpcgb\adjdsdou.exe /d"C:\Users\Admin\AppData\Local\Temp\f31ff6f68ebe392291dbb6214ea9ff92_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 | 52.101.40.26:25 | microsoft-com.mail.protection.outlook.com | tcp |
| HK | 43.231.4.7:443 | tcp | |
| US | 8.8.8.8:53 | yahoo.com | udp |
| US | 8.8.8.8:53 | mta7.am0.yahoodns.net | udp |
| US | 67.195.228.94:25 | mta7.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| NL | 173.194.69.27:25 | smtp.google.com | tcp |
| HK | 43.231.4.7:443 | 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 |
| HK | 43.231.4.7:443 | tcp |
Files
memory/3016-3-0x00000000001B0000-0x00000000001C3000-memory.dmp
memory/3016-2-0x00000000002D0000-0x00000000003D0000-memory.dmp
memory/3016-4-0x0000000000400000-0x0000000000C20000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\adjdsdou.exe
| MD5 | 0fd91bef773b4bf84eb94b11133daef1 |
| SHA1 | f573231cebb06829e19ccf5293537a77ee3ff639 |
| SHA256 | 7593ffaad759cd1d524c778e0fc5076f0de0184f354b3e8b7955cdc877adbae4 |
| SHA512 | 7792e8b986bcf1ea01cc84eb14afc9cf36cabae699925cf4f016d391a79185c7656f0aff7de81c9874fa77726c27cca15a27c1afd6381854da822c6430da807c |
memory/3016-7-0x0000000000400000-0x0000000000C20000-memory.dmp
memory/2748-9-0x00000000002B0000-0x00000000003B0000-memory.dmp
memory/2748-11-0x0000000000400000-0x0000000000C20000-memory.dmp
memory/2560-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2748-15-0x0000000000400000-0x0000000000C20000-memory.dmp
memory/2560-14-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2560-10-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2560-19-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2560-18-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2560-20-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2560-21-0x0000000000080000-0x0000000000095000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-16 08:47
Reported
2024-04-16 08:50
Platform
win10v2004-20240412-en
Max time kernel
150s
Max time network
133s
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\felcyrca\ImagePath = "C:\\Windows\\SysWOW64\\felcyrca\\mhldtege.exe" | C:\Windows\SysWOW64\svchost.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-553605503-2331009851-2137262461-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\f31ff6f68ebe392291dbb6214ea9ff92_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\felcyrca\mhldtege.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4596 set thread context of 4896 | N/A | C:\Windows\SysWOW64\felcyrca\mhldtege.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\f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\felcyrca\mhldtege.exe |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\felcyrca\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mhldtege.exe" C:\Windows\SysWOW64\felcyrca\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create felcyrca binPath= "C:\Windows\SysWOW64\felcyrca\mhldtege.exe /d\"C:\Users\Admin\AppData\Local\Temp\f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description felcyrca "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start felcyrca
C:\Windows\SysWOW64\felcyrca\mhldtege.exe
C:\Windows\SysWOW64\felcyrca\mhldtege.exe /d"C:\Users\Admin\AppData\Local\Temp\f31ff6f68ebe392291dbb6214ea9ff92_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 460 -p 3440 -ip 3440
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3440 -s 1036
C:\Windows\SysWOW64\svchost.exe
svchost.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4596 -ip 4596
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4596 -s 512
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 133.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 163.233.34.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| NL | 23.62.61.112:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 112.61.62.23.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 | 52.101.11.0:25 | microsoft-com.mail.protection.outlook.com | tcp |
| HK | 43.231.4.7:443 | tcp | |
| 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 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 17.143.109.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| NL | 173.194.69.27:25 | smtp.google.com | tcp |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| HK | 43.231.4.7:443 | 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 |
| HK | 43.231.4.7:443 | tcp | |
| US | 8.8.8.8:53 | 41.173.79.40.in-addr.arpa | udp |
Files
memory/3440-1-0x0000000000D30000-0x0000000000E30000-memory.dmp
memory/3440-2-0x0000000002820000-0x0000000002833000-memory.dmp
memory/3440-4-0x0000000000400000-0x0000000000C20000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\mhldtege.exe
| MD5 | 0192a08271aa324f4997e49bc0d602ba |
| SHA1 | bcbc77b7ec8121b73fc7cf62a9ecc526228e0380 |
| SHA256 | 249930b85e0f9ea7ed7e1c4179b537da596f6fb39586f7ea50635d48844895f3 |
| SHA512 | e3828550d6d4de085d8b6c58acf910752be643abf476425321638f38a1fd99504ab5c97939b8e31f4a1a246866a6ca3862d3e0d863544503efae06b6f4ce824c |
memory/3440-7-0x0000000000400000-0x0000000000C20000-memory.dmp
memory/3440-8-0x0000000002820000-0x0000000002833000-memory.dmp
memory/4596-10-0x0000000000EB0000-0x0000000000FB0000-memory.dmp
memory/4596-11-0x0000000000400000-0x0000000000C20000-memory.dmp
memory/4896-12-0x0000000000E10000-0x0000000000E25000-memory.dmp
memory/4896-15-0x0000000000E10000-0x0000000000E25000-memory.dmp
memory/4896-17-0x0000000000E10000-0x0000000000E25000-memory.dmp
memory/4596-16-0x0000000000400000-0x0000000000C20000-memory.dmp
memory/4896-18-0x0000000000E10000-0x0000000000E25000-memory.dmp