Analysis Overview
SHA256
8786fe2c7ac85446839e15b87a0903db034c9a74a570d4cb79a87e9ef97cec77
Threat Level: Known bad
The file 751c3019e0e58df216b3aa22972d101b was found to be: Known bad.
Malicious Activity Summary
Kinsing
UPX packed file
Executes dropped EXE
Loads dropped DLL
Adds Run key to start application
Drops file in System32 directory
Drops file in Windows directory
Unsigned PE
Modifies registry class
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-01-25 17:36
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 |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-01-25 17:36
Reported
2024-01-25 17:39
Platform
win7-20231215-en
Max time kernel
141s
Max time network
124s
Command Line
Signatures
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\internet.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.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 |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunServices\Windows Update = "internet.exe" | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "internet.exe" | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunServices\Windows Update = "internet.exe" | C:\Windows\SysWOW64\internet.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "internet.exe" | C:\Windows\SysWOW64\internet.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\internet.exe | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysExplr.exe | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe | N/A |
| File opened for modification | C:\Windows\SysExplr.exe | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command | C:\Windows\SysWOW64\internet.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "C:\\Windows\\SysExplr.exe \"%1\" " | C:\Windows\SysWOW64\internet.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "C:\\Windows\\SysExplr.exe \"%1\" " | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2404 wrote to memory of 1992 | N/A | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe | C:\Windows\SysWOW64\internet.exe |
| PID 2404 wrote to memory of 1992 | N/A | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe | C:\Windows\SysWOW64\internet.exe |
| PID 2404 wrote to memory of 1992 | N/A | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe | C:\Windows\SysWOW64\internet.exe |
| PID 2404 wrote to memory of 1992 | N/A | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe | C:\Windows\SysWOW64\internet.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe
"C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe"
C:\Windows\SysWOW64\internet.exe
C:\Windows\system32\internet.exe
Network
Files
memory/2404-0-0x0000000000400000-0x0000000000422000-memory.dmp
\Windows\SysWOW64\internet.exe
| MD5 | 751c3019e0e58df216b3aa22972d101b |
| SHA1 | b61ca1a4c5b4810c18252caa9970d85e1f88830b |
| SHA256 | 8786fe2c7ac85446839e15b87a0903db034c9a74a570d4cb79a87e9ef97cec77 |
| SHA512 | 0a256725f7d10056e00aa8e9ff07b7b19ea20be7f954a99cffcbb2ff3280e6eb3f1c0c229ccb6ee5609898286d440f22edc0ef8bbf5a6b73519d26100452371c |
memory/2404-10-0x0000000000220000-0x0000000000242000-memory.dmp
memory/1992-11-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2404-12-0x0000000000400000-0x0000000000422000-memory.dmp
memory/1992-13-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2404-16-0x0000000000220000-0x0000000000242000-memory.dmp
memory/2404-17-0x0000000000400000-0x0000000000422000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-25 17:36
Reported
2024-01-25 17:39
Platform
win10v2004-20231215-en
Max time kernel
142s
Max time network
152s
Command Line
Signatures
Kinsing
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\internet.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 |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunServices\Windows Update = "internet.exe" | C:\Windows\SysWOW64\internet.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "internet.exe" | C:\Windows\SysWOW64\internet.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunServices\Windows Update = "internet.exe" | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "internet.exe" | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\internet.exe | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysExplr.exe | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe | N/A |
| File opened for modification | C:\Windows\SysExplr.exe | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "C:\\Windows\\SysExplr.exe \"%1\" " | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command | C:\Windows\SysWOW64\internet.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "C:\\Windows\\SysExplr.exe \"%1\" " | C:\Windows\SysWOW64\internet.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4952 wrote to memory of 2348 | N/A | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe | C:\Windows\SysWOW64\internet.exe |
| PID 4952 wrote to memory of 2348 | N/A | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe | C:\Windows\SysWOW64\internet.exe |
| PID 4952 wrote to memory of 2348 | N/A | C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe | C:\Windows\SysWOW64\internet.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe
"C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe"
C:\Windows\SysWOW64\internet.exe
C:\Windows\system32\internet.exe
Network
| Country | Destination | Domain | Proto |
| US | 138.91.171.81:80 | tcp | |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.160.77.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 90.16.208.104.in-addr.arpa | udp |
Files
memory/4952-0-0x0000000000400000-0x0000000000422000-memory.dmp
C:\Windows\SysWOW64\internet.exe
| MD5 | 751c3019e0e58df216b3aa22972d101b |
| SHA1 | b61ca1a4c5b4810c18252caa9970d85e1f88830b |
| SHA256 | 8786fe2c7ac85446839e15b87a0903db034c9a74a570d4cb79a87e9ef97cec77 |
| SHA512 | 0a256725f7d10056e00aa8e9ff07b7b19ea20be7f954a99cffcbb2ff3280e6eb3f1c0c229ccb6ee5609898286d440f22edc0ef8bbf5a6b73519d26100452371c |
memory/4952-6-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2348-7-0x0000000000400000-0x0000000000422000-memory.dmp
memory/4952-10-0x0000000000400000-0x0000000000422000-memory.dmp