Analysis Overview
SHA256
60e2158617e48257c3b05f55506b363bf826313359815f5a7527613b07bd3d29
Threat Level: Shows suspicious behavior
The file c06b83f3b18dd8b95c8dbc2768d2bcc4_JaffaCakes118 was found to be: Shows suspicious behavior.
Malicious Activity Summary
Executes dropped EXE
UPX packed file
Adds Run key to start application
Drops file in Windows directory
System Location Discovery: System Language Discovery
Unsigned PE
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-25 09:17
Signatures
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-25 09:17
Reported
2024-08-25 09:19
Platform
win10v2004-20240802-en
Max time kernel
140s
Max time network
128s
Command Line
Signatures
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\windows\kernels32.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Service System = "\"c:\\windows\\kernels32.exe\"" | \??\c:\windows\kernels32.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | \??\c:\windows\kernels32.exe | C:\Users\Admin\AppData\Local\Temp\c06b83f3b18dd8b95c8dbc2768d2bcc4_JaffaCakes118.exe | N/A |
| File opened for modification | \??\c:\windows\kernels32.exe | C:\Users\Admin\AppData\Local\Temp\c06b83f3b18dd8b95c8dbc2768d2bcc4_JaffaCakes118.exe | N/A |
| File created | C:\Windows\ieupdate.dat | \??\c:\windows\kernels32.exe | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\c06b83f3b18dd8b95c8dbc2768d2bcc4_JaffaCakes118.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | \??\c:\windows\kernels32.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\c06b83f3b18dd8b95c8dbc2768d2bcc4_JaffaCakes118.exe | N/A |
| N/A | N/A | \??\c:\windows\kernels32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4888 wrote to memory of 1408 | N/A | C:\Users\Admin\AppData\Local\Temp\c06b83f3b18dd8b95c8dbc2768d2bcc4_JaffaCakes118.exe | \??\c:\windows\kernels32.exe |
| PID 4888 wrote to memory of 1408 | N/A | C:\Users\Admin\AppData\Local\Temp\c06b83f3b18dd8b95c8dbc2768d2bcc4_JaffaCakes118.exe | \??\c:\windows\kernels32.exe |
| PID 4888 wrote to memory of 1408 | N/A | C:\Users\Admin\AppData\Local\Temp\c06b83f3b18dd8b95c8dbc2768d2bcc4_JaffaCakes118.exe | \??\c:\windows\kernels32.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\c06b83f3b18dd8b95c8dbc2768d2bcc4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c06b83f3b18dd8b95c8dbc2768d2bcc4_JaffaCakes118.exe"
\??\c:\windows\kernels32.exe
c:\windows\kernels32.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 --field-trial-handle=3056,i,1828333185976713750,7918646547767660928,262144 --variations-seed-version --mojo-platform-channel-handle=4448 /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | www.supernet.speedserv.com | udp |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | smtp.mail.yahoo.com.br | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 150.171.28.10:443 | g.bing.com | tcp |
| IE | 87.248.97.36:25 | smtp.mail.yahoo.com.br | tcp |
| US | 8.8.8.8:53 | 20.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 30.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 10.27.171.150.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
Files
memory/4888-0-0x0000000000400000-0x00000000005A7000-memory.dmp
\??\c:\windows\kernels32.exe
| MD5 | c06b83f3b18dd8b95c8dbc2768d2bcc4 |
| SHA1 | 6945940d41d3d5f12b3f2d984d7a1aadf48a5b14 |
| SHA256 | 60e2158617e48257c3b05f55506b363bf826313359815f5a7527613b07bd3d29 |
| SHA512 | 0a8dd91ab4b7e7322ea4c32d3b358499b2fab9ec95a869295e0839162816918982e9959920c5a61939355574a6a1c7dd1caf83a83b3a96d515c100d6a741001c |
memory/1408-8-0x0000000000400000-0x00000000005A7000-memory.dmp
memory/4888-12-0x0000000000400000-0x00000000005A7000-memory.dmp
memory/1408-13-0x0000000000400000-0x00000000005A7000-memory.dmp
memory/1408-16-0x0000000000400000-0x00000000005A7000-memory.dmp
memory/1408-17-0x0000000000400000-0x00000000005A7000-memory.dmp
memory/1408-20-0x0000000000400000-0x00000000005A7000-memory.dmp
memory/1408-21-0x0000000000400000-0x00000000005A7000-memory.dmp
memory/1408-22-0x0000000000400000-0x00000000005A7000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-25 09:17
Reported
2024-08-25 09:19
Platform
win7-20240704-en
Max time kernel
140s
Max time network
18s
Command Line
Signatures
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\windows\kernels32.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Service System = "\"c:\\windows\\kernels32.exe\"" | \??\c:\windows\kernels32.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | \??\c:\windows\kernels32.exe | C:\Users\Admin\AppData\Local\Temp\c06b83f3b18dd8b95c8dbc2768d2bcc4_JaffaCakes118.exe | N/A |
| File opened for modification | \??\c:\windows\kernels32.exe | C:\Users\Admin\AppData\Local\Temp\c06b83f3b18dd8b95c8dbc2768d2bcc4_JaffaCakes118.exe | N/A |
| File created | C:\Windows\ieupdate.dat | \??\c:\windows\kernels32.exe | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\c06b83f3b18dd8b95c8dbc2768d2bcc4_JaffaCakes118.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | \??\c:\windows\kernels32.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\c06b83f3b18dd8b95c8dbc2768d2bcc4_JaffaCakes118.exe | N/A |
| N/A | N/A | \??\c:\windows\kernels32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2472 wrote to memory of 2248 | N/A | C:\Users\Admin\AppData\Local\Temp\c06b83f3b18dd8b95c8dbc2768d2bcc4_JaffaCakes118.exe | \??\c:\windows\kernels32.exe |
| PID 2472 wrote to memory of 2248 | N/A | C:\Users\Admin\AppData\Local\Temp\c06b83f3b18dd8b95c8dbc2768d2bcc4_JaffaCakes118.exe | \??\c:\windows\kernels32.exe |
| PID 2472 wrote to memory of 2248 | N/A | C:\Users\Admin\AppData\Local\Temp\c06b83f3b18dd8b95c8dbc2768d2bcc4_JaffaCakes118.exe | \??\c:\windows\kernels32.exe |
| PID 2472 wrote to memory of 2248 | N/A | C:\Users\Admin\AppData\Local\Temp\c06b83f3b18dd8b95c8dbc2768d2bcc4_JaffaCakes118.exe | \??\c:\windows\kernels32.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\c06b83f3b18dd8b95c8dbc2768d2bcc4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c06b83f3b18dd8b95c8dbc2768d2bcc4_JaffaCakes118.exe"
\??\c:\windows\kernels32.exe
c:\windows\kernels32.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | www.supernet.speedserv.com | udp |
| US | 8.8.8.8:53 | smtp.mail.yahoo.com.br | udp |
| IE | 87.248.97.36:25 | smtp.mail.yahoo.com.br | tcp |
Files
memory/2472-1-0x0000000000400000-0x00000000005A7000-memory.dmp
memory/2472-10-0x0000000002AD0000-0x0000000002C77000-memory.dmp
memory/2248-11-0x0000000000400000-0x00000000005A7000-memory.dmp
C:\Windows\kernels32.exe
| MD5 | c06b83f3b18dd8b95c8dbc2768d2bcc4 |
| SHA1 | 6945940d41d3d5f12b3f2d984d7a1aadf48a5b14 |
| SHA256 | 60e2158617e48257c3b05f55506b363bf826313359815f5a7527613b07bd3d29 |
| SHA512 | 0a8dd91ab4b7e7322ea4c32d3b358499b2fab9ec95a869295e0839162816918982e9959920c5a61939355574a6a1c7dd1caf83a83b3a96d515c100d6a741001c |
memory/2472-17-0x0000000002AD0000-0x0000000002C77000-memory.dmp
memory/2472-16-0x0000000000400000-0x00000000005A7000-memory.dmp
memory/2248-18-0x0000000000400000-0x00000000005A7000-memory.dmp
memory/2248-20-0x0000000000400000-0x00000000005A7000-memory.dmp
memory/2248-21-0x0000000000400000-0x00000000005A7000-memory.dmp
memory/2248-22-0x0000000000400000-0x00000000005A7000-memory.dmp
memory/2248-23-0x0000000000400000-0x00000000005A7000-memory.dmp