Analysis Overview
SHA256
f0d18843cd2adf8eb01fb11839339c7f8ef134ace9f9d5a4f1bf4b6229808a07
Threat Level: Known bad
The file f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
Windows security bypass
Tofsee
Tofsee family
Creates new service(s)
Sets service image path in registry
Modifies Windows Firewall
Deletes itself
Executes dropped EXE
Checks computer location settings
Suspicious use of SetThreadContext
Launches sc.exe
Enumerates physical storage devices
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-15 23:04
Signatures
Tofsee family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-15 23:04
Reported
2024-04-15 23:07
Platform
win7-20240220-en
Max time kernel
144s
Max time network
121s
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\cvuxicpu = "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\cvuxicpu\ImagePath = "C:\\Windows\\SysWOW64\\cvuxicpu\\gbifebxy.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\cvuxicpu\gbifebxy.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1972 set thread context of 2856 | N/A | C:\Windows\SysWOW64\cvuxicpu\gbifebxy.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\f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cvuxicpu\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gbifebxy.exe" C:\Windows\SysWOW64\cvuxicpu\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create cvuxicpu binPath= "C:\Windows\SysWOW64\cvuxicpu\gbifebxy.exe /d\"C:\Users\Admin\AppData\Local\Temp\f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description cvuxicpu "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start cvuxicpu
C:\Windows\SysWOW64\cvuxicpu\gbifebxy.exe
C:\Windows\SysWOW64\cvuxicpu\gbifebxy.exe /d"C:\Users\Admin\AppData\Local\Temp\f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe"
C:\Windows\SysWOW64\svchost.exe
svchost.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
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 | 104.47.54.36:25 | 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 | mta6.am0.yahoodns.net | udp |
| US | 67.195.228.106:25 | 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 | 142.251.18.26:25 | 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 | 94.100.180.31:25 | mxs.mail.ru | tcp |
| HK | 43.231.4.7:443 | tcp |
Files
C:\Users\Admin\AppData\Local\Temp\gbifebxy.exe
| MD5 | 4755e8e30b2269e8d7a6b70dfdab89b3 |
| SHA1 | 1ac158790a6426340f66cd81351f17b8c7bf50ed |
| SHA256 | b86a29650102f586563de53a832fe5b800e64d7cb5f4eb1b4a757738933ca003 |
| SHA512 | a567aa262ee65c3aa243551f8c05bb7a6b1b442fd1f98c62e029c3ec0d1619e7e55627d9c58d66de73f1489c419064b1e354228297a022a76f7a1ce5b9462b6e |
memory/2856-3-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2856-5-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2856-10-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2856-7-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2856-11-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2856-12-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2856-13-0x0000000000080000-0x0000000000095000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-15 23:04
Reported
2024-04-15 23:07
Platform
win10v2004-20240412-en
Max time kernel
152s
Max time network
158s
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\lzrygyyi\ImagePath = "C:\\Windows\\SysWOW64\\lzrygyyi\\edplqakx.exe" | C:\Windows\SysWOW64\svchost.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\f22195b83a3c4e02677a69e80c8b66fe_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\lzrygyyi\edplqakx.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4744 set thread context of 2796 | N/A | C:\Windows\SysWOW64\lzrygyyi\edplqakx.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\f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe"
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4192,i,4770062162764366287,7825742579436984831,262144 --variations-seed-version --mojo-platform-channel-handle=4112 /prefetch:8
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lzrygyyi\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\edplqakx.exe" C:\Windows\SysWOW64\lzrygyyi\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create lzrygyyi binPath= "C:\Windows\SysWOW64\lzrygyyi\edplqakx.exe /d\"C:\Users\Admin\AppData\Local\Temp\f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description lzrygyyi "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start lzrygyyi
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\lzrygyyi\edplqakx.exe
C:\Windows\SysWOW64\lzrygyyi\edplqakx.exe /d"C:\Users\Admin\AppData\Local\Temp\f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe"
C:\Windows\SysWOW64\svchost.exe
svchost.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 74.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| 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 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.114.53.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.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 | 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 | 133.250.112.20.in-addr.arpa | udp |
| HK | 43.231.4.7:443 | tcp | |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | yahoo.com | udp |
| US | 8.8.8.8:53 | mta6.am0.yahoodns.net | udp |
| US | 98.136.96.76:25 | mta6.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | 19.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| NL | 142.251.18.26:25 | smtp.google.com | tcp |
| HK | 43.231.4.7:443 | tcp | |
| US | 8.8.8.8:53 | 249.197.17.2.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 | 28.173.189.20.in-addr.arpa | udp |
| HK | 43.231.4.7:443 | tcp |
Files
C:\Users\Admin\AppData\Local\Temp\edplqakx.exe
| MD5 | 87ccdcc44a9f68a9b4592292839f95cc |
| SHA1 | d686491c58972d9704bf04fbc7ed03dc7833df38 |
| SHA256 | d9e5559add026273d1915cf583145a3fa8cea6abafdcb3d1e4efc9a78cba1f5a |
| SHA512 | 0e608b0c7c979e58f70074baf3fb760e671c6cf0741a46db7c737f181da2e0d52abd21f9b0364cc661c6d4bcb366c67ccc2ed8ee8b5cbd6ad453c824329db64e |
memory/2796-3-0x0000000000340000-0x0000000000355000-memory.dmp
memory/2796-5-0x0000000000340000-0x0000000000355000-memory.dmp
memory/2796-7-0x0000000000340000-0x0000000000355000-memory.dmp
memory/2796-6-0x0000000000340000-0x0000000000355000-memory.dmp
memory/2796-8-0x0000000000340000-0x0000000000355000-memory.dmp
memory/2796-9-0x0000000000340000-0x0000000000355000-memory.dmp