Analysis Overview
SHA256
dd5fbb4a51e65cdf775fbc53532c8c73410e0e25fee97d3dd1af92bfcda092e2
Threat Level: Shows suspicious behavior
The file dd5fbb4a51e65cdf775fbc53532c8c73410e0e25fee97d3dd1af92bfcda092e2.exe 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
2024-11-11 12:31
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-11 12:31
Reported
2024-11-11 12:33
Platform
win7-20240729-en
Max time kernel
119s
Max time network
17s
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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\dd5fbb4a51e65cdf775fbc53532c8c73410e0e25fee97d3dd1af92bfcda092e2.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\dd5fbb4a51e65cdf775fbc53532c8c73410e0e25fee97d3dd1af92bfcda092e2.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\dd5fbb4a51e65cdf775fbc53532c8c73410e0e25fee97d3dd1af92bfcda092e2.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1792 wrote to memory of 1948 | N/A | C:\Users\Admin\AppData\Local\Temp\dd5fbb4a51e65cdf775fbc53532c8c73410e0e25fee97d3dd1af92bfcda092e2.exe | C:\Windows\microsofthelp.exe |
| PID 1792 wrote to memory of 1948 | N/A | C:\Users\Admin\AppData\Local\Temp\dd5fbb4a51e65cdf775fbc53532c8c73410e0e25fee97d3dd1af92bfcda092e2.exe | C:\Windows\microsofthelp.exe |
| PID 1792 wrote to memory of 1948 | N/A | C:\Users\Admin\AppData\Local\Temp\dd5fbb4a51e65cdf775fbc53532c8c73410e0e25fee97d3dd1af92bfcda092e2.exe | C:\Windows\microsofthelp.exe |
| PID 1792 wrote to memory of 1948 | N/A | C:\Users\Admin\AppData\Local\Temp\dd5fbb4a51e65cdf775fbc53532c8c73410e0e25fee97d3dd1af92bfcda092e2.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\dd5fbb4a51e65cdf775fbc53532c8c73410e0e25fee97d3dd1af92bfcda092e2.exe
"C:\Users\Admin\AppData\Local\Temp\dd5fbb4a51e65cdf775fbc53532c8c73410e0e25fee97d3dd1af92bfcda092e2.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/1792-0-0x0000000000400000-0x000000000040D000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 3d2b5d025a986136f64d715fde7829f7 |
| SHA1 | 26d7e1da1af92793e088cf0ccad672243357b7ab |
| SHA256 | 5ff7e1eadb6c4d6ba9a1e17b8599b51662d60eba2ef5a20a15acbc47babe2798 |
| SHA512 | e80e332913d9fbaacb6468217e3544fa5e59960bcd07f5ea30a5e34de02bb156d29a66946b1b0c9e75ff7f3c54b4fd7daf7764bf8002d3b85db9982e542b4886 |
memory/1792-6-0x0000000000400000-0x000000000040D000-memory.dmp
memory/1948-9-0x0000000000400000-0x000000000040D000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-11 12:31
Reported
2024-11-11 12:33
Platform
win10v2004-20241007-en
Max time kernel
119s
Max time network
97s
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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\dd5fbb4a51e65cdf775fbc53532c8c73410e0e25fee97d3dd1af92bfcda092e2.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\dd5fbb4a51e65cdf775fbc53532c8c73410e0e25fee97d3dd1af92bfcda092e2.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\dd5fbb4a51e65cdf775fbc53532c8c73410e0e25fee97d3dd1af92bfcda092e2.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 2764 wrote to memory of 3820 | N/A | C:\Users\Admin\AppData\Local\Temp\dd5fbb4a51e65cdf775fbc53532c8c73410e0e25fee97d3dd1af92bfcda092e2.exe | C:\Windows\microsofthelp.exe |
| PID 2764 wrote to memory of 3820 | N/A | C:\Users\Admin\AppData\Local\Temp\dd5fbb4a51e65cdf775fbc53532c8c73410e0e25fee97d3dd1af92bfcda092e2.exe | C:\Windows\microsofthelp.exe |
| PID 2764 wrote to memory of 3820 | N/A | C:\Users\Admin\AppData\Local\Temp\dd5fbb4a51e65cdf775fbc53532c8c73410e0e25fee97d3dd1af92bfcda092e2.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\dd5fbb4a51e65cdf775fbc53532c8c73410e0e25fee97d3dd1af92bfcda092e2.exe
"C:\Users\Admin\AppData\Local\Temp\dd5fbb4a51e65cdf775fbc53532c8c73410e0e25fee97d3dd1af92bfcda092e2.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 102.209.201.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 17.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 197.87.175.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 98.117.19.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 83.210.23.2.in-addr.arpa | udp |
Files
memory/2764-0-0x0000000000400000-0x000000000040D000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 3d2b5d025a986136f64d715fde7829f7 |
| SHA1 | 26d7e1da1af92793e088cf0ccad672243357b7ab |
| SHA256 | 5ff7e1eadb6c4d6ba9a1e17b8599b51662d60eba2ef5a20a15acbc47babe2798 |
| SHA512 | e80e332913d9fbaacb6468217e3544fa5e59960bcd07f5ea30a5e34de02bb156d29a66946b1b0c9e75ff7f3c54b4fd7daf7764bf8002d3b85db9982e542b4886 |
memory/2764-4-0x0000000000400000-0x000000000040D000-memory.dmp
memory/3820-6-0x0000000000400000-0x000000000040D000-memory.dmp