Analysis Overview
SHA256
87d8fb634bfce482777dce52e5a4dab627da625bf54b09134da7e22a1ff53be3
Threat Level: Shows suspicious behavior
The file 87d8fb634bfce482777dce52e5a4dab627da625bf54b09134da7e22a1ff53be3N was found to be: Shows suspicious behavior.
Malicious Activity Summary
Executes dropped EXE
Deletes itself
Adds Run key to start application
Drops file in Windows directory
System Location Discovery: System Language Discovery
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-09 21:04
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-09 21:04
Reported
2024-11-09 21:06
Platform
win7-20240903-en
Max time kernel
119s
Max time network
16s
Command Line
Signatures
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\microsofthelp.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\microsofthelp.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\87d8fb634bfce482777dce52e5a4dab627da625bf54b09134da7e22a1ff53be3N.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\87d8fb634bfce482777dce52e5a4dab627da625bf54b09134da7e22a1ff53be3N.exe | N/A |
| File created | C:\Windows\HidePlugin.dll | C:\Windows\microsofthelp.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\87d8fb634bfce482777dce52e5a4dab627da625bf54b09134da7e22a1ff53be3N.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2492 wrote to memory of 1264 | N/A | C:\Users\Admin\AppData\Local\Temp\87d8fb634bfce482777dce52e5a4dab627da625bf54b09134da7e22a1ff53be3N.exe | C:\Windows\microsofthelp.exe |
| PID 2492 wrote to memory of 1264 | N/A | C:\Users\Admin\AppData\Local\Temp\87d8fb634bfce482777dce52e5a4dab627da625bf54b09134da7e22a1ff53be3N.exe | C:\Windows\microsofthelp.exe |
| PID 2492 wrote to memory of 1264 | N/A | C:\Users\Admin\AppData\Local\Temp\87d8fb634bfce482777dce52e5a4dab627da625bf54b09134da7e22a1ff53be3N.exe | C:\Windows\microsofthelp.exe |
| PID 2492 wrote to memory of 1264 | N/A | C:\Users\Admin\AppData\Local\Temp\87d8fb634bfce482777dce52e5a4dab627da625bf54b09134da7e22a1ff53be3N.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\87d8fb634bfce482777dce52e5a4dab627da625bf54b09134da7e22a1ff53be3N.exe
"C:\Users\Admin\AppData\Local\Temp\87d8fb634bfce482777dce52e5a4dab627da625bf54b09134da7e22a1ff53be3N.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/2492-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 3e51a0d08b89ba5ee9cb9af46373e413 |
| SHA1 | dc42013aaa4753ba052354710edc768b945222a5 |
| SHA256 | 7a32394f12855d10cf52a8ef5b2d1929ffca109e062b1fb975160f0f21e6ad8a |
| SHA512 | 5febf8514016685f1e9bb83b979df727eec80b854e10789db21774acc6485233e37455b8f36e47b6de48d04dac912ee16dca6de7a443d6003b3113a6eda8d899 |
memory/1264-9-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2492-7-0x0000000000400000-0x000000000040E000-memory.dmp
memory/1264-11-0x0000000000400000-0x000000000040E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-09 21:04
Reported
2024-11-09 21:06
Platform
win10v2004-20241007-en
Max time kernel
119s
Max time network
94s
Command Line
Signatures
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\microsofthelp.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\microsofthelp.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\87d8fb634bfce482777dce52e5a4dab627da625bf54b09134da7e22a1ff53be3N.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\87d8fb634bfce482777dce52e5a4dab627da625bf54b09134da7e22a1ff53be3N.exe | N/A |
| File created | C:\Windows\HidePlugin.dll | C:\Windows\microsofthelp.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\87d8fb634bfce482777dce52e5a4dab627da625bf54b09134da7e22a1ff53be3N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\microsofthelp.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2440 wrote to memory of 1316 | N/A | C:\Users\Admin\AppData\Local\Temp\87d8fb634bfce482777dce52e5a4dab627da625bf54b09134da7e22a1ff53be3N.exe | C:\Windows\microsofthelp.exe |
| PID 2440 wrote to memory of 1316 | N/A | C:\Users\Admin\AppData\Local\Temp\87d8fb634bfce482777dce52e5a4dab627da625bf54b09134da7e22a1ff53be3N.exe | C:\Windows\microsofthelp.exe |
| PID 2440 wrote to memory of 1316 | N/A | C:\Users\Admin\AppData\Local\Temp\87d8fb634bfce482777dce52e5a4dab627da625bf54b09134da7e22a1ff53be3N.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\87d8fb634bfce482777dce52e5a4dab627da625bf54b09134da7e22a1ff53be3N.exe
"C:\Users\Admin\AppData\Local\Temp\87d8fb634bfce482777dce52e5a4dab627da625bf54b09134da7e22a1ff53be3N.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 83.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 69.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 212.20.149.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.209.201.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
Files
memory/2440-0-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2440-5-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 3e51a0d08b89ba5ee9cb9af46373e413 |
| SHA1 | dc42013aaa4753ba052354710edc768b945222a5 |
| SHA256 | 7a32394f12855d10cf52a8ef5b2d1929ffca109e062b1fb975160f0f21e6ad8a |
| SHA512 | 5febf8514016685f1e9bb83b979df727eec80b854e10789db21774acc6485233e37455b8f36e47b6de48d04dac912ee16dca6de7a443d6003b3113a6eda8d899 |
memory/1316-7-0x0000000000400000-0x000000000040E000-memory.dmp