Analysis Overview
SHA256
989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68
Threat Level: Shows suspicious behavior
The file 989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe 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
2024-11-12 14:09
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-12 14:09
Reported
2024-11-12 14:11
Platform
win7-20240903-en
Max time kernel
119s
Max time network
20s
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\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.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\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1924 wrote to memory of 2544 | N/A | C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe | C:\Windows\microsofthelp.exe |
| PID 1924 wrote to memory of 2544 | N/A | C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe | C:\Windows\microsofthelp.exe |
| PID 1924 wrote to memory of 2544 | N/A | C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe | C:\Windows\microsofthelp.exe |
| PID 1924 wrote to memory of 2544 | N/A | C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe
"C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/1924-0-0x0000000000400000-0x0000000000403000-memory.dmp
memory/1924-6-0x0000000000400000-0x0000000000403000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 418478bd815a8d9320ed0e692ad514f5 |
| SHA1 | 520f370f3b00ccd7cd472b191c55b62c498af77c |
| SHA256 | 1fbf226e0075004d526b92a7ffe6ccf9e424754d6059bf47ed77d99eaacb9b47 |
| SHA512 | cc9a85ba0e44f58a4e6ddf5b0a28c179ffeeaf3102cf081c793850ee19adea9b91323de74bdaac5a60183e73fafaa04959436579ecef29d4f99e65e6bd67939b |
memory/2544-8-0x0000000000400000-0x0000000000403000-memory.dmp
memory/2544-10-0x0000000000400000-0x0000000000403000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-12 14:09
Reported
2024-11-12 14:11
Platform
win10v2004-20241007-en
Max time kernel
119s
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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.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\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.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 2064 wrote to memory of 3204 | N/A | C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe | C:\Windows\microsofthelp.exe |
| PID 2064 wrote to memory of 3204 | N/A | C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe | C:\Windows\microsofthelp.exe |
| PID 2064 wrote to memory of 3204 | N/A | C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe
"C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 72.32.126.40.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 | 200.163.202.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 53.210.109.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.236.111.52.in-addr.arpa | udp |
Files
memory/2064-0-0x0000000000400000-0x0000000000403000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 418478bd815a8d9320ed0e692ad514f5 |
| SHA1 | 520f370f3b00ccd7cd472b191c55b62c498af77c |
| SHA256 | 1fbf226e0075004d526b92a7ffe6ccf9e424754d6059bf47ed77d99eaacb9b47 |
| SHA512 | cc9a85ba0e44f58a4e6ddf5b0a28c179ffeeaf3102cf081c793850ee19adea9b91323de74bdaac5a60183e73fafaa04959436579ecef29d4f99e65e6bd67939b |
memory/2064-5-0x0000000000400000-0x0000000000403000-memory.dmp
memory/3204-6-0x0000000000400000-0x0000000000403000-memory.dmp