Analysis Overview
SHA256
b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7
Threat Level: Shows suspicious behavior
The file b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N was found to be: Shows suspicious behavior.
Malicious Activity Summary
Deletes itself
Executes dropped EXE
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 21:58
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-09 21:58
Reported
2024-11-09 22:00
Platform
win7-20240903-en
Max time kernel
119s
Max time network
120s
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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.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\b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2268 wrote to memory of 2692 | N/A | C:\Users\Admin\AppData\Local\Temp\b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe | C:\Windows\microsofthelp.exe |
| PID 2268 wrote to memory of 2692 | N/A | C:\Users\Admin\AppData\Local\Temp\b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe | C:\Windows\microsofthelp.exe |
| PID 2268 wrote to memory of 2692 | N/A | C:\Users\Admin\AppData\Local\Temp\b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe | C:\Windows\microsofthelp.exe |
| PID 2268 wrote to memory of 2692 | N/A | C:\Users\Admin\AppData\Local\Temp\b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe
"C:\Users\Admin\AppData\Local\Temp\b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/2268-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 18cd75ec7055e795d9e2670aca02fc3f |
| SHA1 | d935ffcd200828c533639af3b5788c7c8ba11c50 |
| SHA256 | e39ed6608ca9493208189b81e44f8a2caf323e96d0cba08881032b02185ac6ab |
| SHA512 | 6530e0f8a7535ffc28617735d94eb2a2ad57ad54e57961e567de1a566ede6003ad0a7937ee6fb2e1f53509709a3544a2e0c455cadb58854968d28405503c9e40 |
memory/2268-7-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2692-9-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2692-11-0x0000000000400000-0x000000000040E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-09 21:58
Reported
2024-11-09 22:00
Platform
win10v2004-20241007-en
Max time kernel
120s
Max time network
96s
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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.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:\Windows\microsofthelp.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3992 wrote to memory of 3732 | N/A | C:\Users\Admin\AppData\Local\Temp\b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe | C:\Windows\microsofthelp.exe |
| PID 3992 wrote to memory of 3732 | N/A | C:\Users\Admin\AppData\Local\Temp\b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe | C:\Windows\microsofthelp.exe |
| PID 3992 wrote to memory of 3732 | N/A | C:\Users\Admin\AppData\Local\Temp\b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe
"C:\Users\Admin\AppData\Local\Temp\b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 98.209.201.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 53.210.109.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
Files
memory/3992-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 18cd75ec7055e795d9e2670aca02fc3f |
| SHA1 | d935ffcd200828c533639af3b5788c7c8ba11c50 |
| SHA256 | e39ed6608ca9493208189b81e44f8a2caf323e96d0cba08881032b02185ac6ab |
| SHA512 | 6530e0f8a7535ffc28617735d94eb2a2ad57ad54e57961e567de1a566ede6003ad0a7937ee6fb2e1f53509709a3544a2e0c455cadb58854968d28405503c9e40 |
memory/3992-4-0x0000000000400000-0x000000000040E000-memory.dmp
memory/3732-6-0x0000000000400000-0x000000000040E000-memory.dmp