Analysis Overview
SHA256
c499fb0bb29f94bba2402b3f9af126daf6dde4f2fdbb25807ebf4932a083c18a
Threat Level: Shows suspicious behavior
The file c499fb0bb29f94bba2402b3f9af126daf6dde4f2fdbb25807ebf4932a083c18aN 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
Unsigned PE
System Location Discovery: System Language Discovery
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-09 20:59
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-09 20:59
Reported
2024-11-09 21:01
Platform
win7-20240903-en
Max time kernel
119s
Max time network
119s
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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\c499fb0bb29f94bba2402b3f9af126daf6dde4f2fdbb25807ebf4932a083c18aN.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\c499fb0bb29f94bba2402b3f9af126daf6dde4f2fdbb25807ebf4932a083c18aN.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\c499fb0bb29f94bba2402b3f9af126daf6dde4f2fdbb25807ebf4932a083c18aN.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2268 wrote to memory of 2360 | N/A | C:\Users\Admin\AppData\Local\Temp\c499fb0bb29f94bba2402b3f9af126daf6dde4f2fdbb25807ebf4932a083c18aN.exe | C:\Windows\microsofthelp.exe |
| PID 2268 wrote to memory of 2360 | N/A | C:\Users\Admin\AppData\Local\Temp\c499fb0bb29f94bba2402b3f9af126daf6dde4f2fdbb25807ebf4932a083c18aN.exe | C:\Windows\microsofthelp.exe |
| PID 2268 wrote to memory of 2360 | N/A | C:\Users\Admin\AppData\Local\Temp\c499fb0bb29f94bba2402b3f9af126daf6dde4f2fdbb25807ebf4932a083c18aN.exe | C:\Windows\microsofthelp.exe |
| PID 2268 wrote to memory of 2360 | N/A | C:\Users\Admin\AppData\Local\Temp\c499fb0bb29f94bba2402b3f9af126daf6dde4f2fdbb25807ebf4932a083c18aN.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\c499fb0bb29f94bba2402b3f9af126daf6dde4f2fdbb25807ebf4932a083c18aN.exe
"C:\Users\Admin\AppData\Local\Temp\c499fb0bb29f94bba2402b3f9af126daf6dde4f2fdbb25807ebf4932a083c18aN.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/2268-0-0x0000000000400000-0x000000000040F000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 0786d204e1ec24a4015605eae07b199b |
| SHA1 | 9e689c164fcf3276b46f1d2539732758d7761137 |
| SHA256 | c8a9aa875d27705ceb39bb47b08609f267be4792825a8a6aea943867fd3a7a2f |
| SHA512 | c477887f200832a20f200dcbf7c7f10f6602fcabcb8b761625e6ee97bbb52577c51ff62be3247f8afd5f15dc15754fc593cca6eb951f8f88b1fe2ef90e9873ba |
memory/2360-8-0x0000000000400000-0x000000000040F000-memory.dmp
memory/2268-6-0x0000000000400000-0x000000000040F000-memory.dmp
memory/2360-10-0x0000000000400000-0x000000000040F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-09 20:59
Reported
2024-11-09 21:01
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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\c499fb0bb29f94bba2402b3f9af126daf6dde4f2fdbb25807ebf4932a083c18aN.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\HidePlugin.dll | C:\Windows\microsofthelp.exe | N/A |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\c499fb0bb29f94bba2402b3f9af126daf6dde4f2fdbb25807ebf4932a083c18aN.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\c499fb0bb29f94bba2402b3f9af126daf6dde4f2fdbb25807ebf4932a083c18aN.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2288 wrote to memory of 1168 | N/A | C:\Users\Admin\AppData\Local\Temp\c499fb0bb29f94bba2402b3f9af126daf6dde4f2fdbb25807ebf4932a083c18aN.exe | C:\Windows\microsofthelp.exe |
| PID 2288 wrote to memory of 1168 | N/A | C:\Users\Admin\AppData\Local\Temp\c499fb0bb29f94bba2402b3f9af126daf6dde4f2fdbb25807ebf4932a083c18aN.exe | C:\Windows\microsofthelp.exe |
| PID 2288 wrote to memory of 1168 | N/A | C:\Users\Admin\AppData\Local\Temp\c499fb0bb29f94bba2402b3f9af126daf6dde4f2fdbb25807ebf4932a083c18aN.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\c499fb0bb29f94bba2402b3f9af126daf6dde4f2fdbb25807ebf4932a083c18aN.exe
"C:\Users\Admin\AppData\Local\Temp\c499fb0bb29f94bba2402b3f9af126daf6dde4f2fdbb25807ebf4932a083c18aN.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 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 69.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.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 | 53.210.109.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 98.117.19.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 99.209.201.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
Files
memory/2288-0-0x0000000000400000-0x000000000040F000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 0786d204e1ec24a4015605eae07b199b |
| SHA1 | 9e689c164fcf3276b46f1d2539732758d7761137 |
| SHA256 | c8a9aa875d27705ceb39bb47b08609f267be4792825a8a6aea943867fd3a7a2f |
| SHA512 | c477887f200832a20f200dcbf7c7f10f6602fcabcb8b761625e6ee97bbb52577c51ff62be3247f8afd5f15dc15754fc593cca6eb951f8f88b1fe2ef90e9873ba |
memory/2288-4-0x0000000000400000-0x000000000040F000-memory.dmp
memory/1168-6-0x0000000000400000-0x000000000040F000-memory.dmp