Analysis Overview
SHA256
bf5899ffd7c5a806928951cae770d054513b7604e259ea237d1fcd7cbd461267
Threat Level: Shows suspicious behavior
The file bf5899ffd7c5a806928951cae770d054513b7604e259ea237d1fcd7cbd461267N 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 12:15
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-12 12:15
Reported
2024-11-12 12:17
Platform
win7-20241023-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-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\bf5899ffd7c5a806928951cae770d054513b7604e259ea237d1fcd7cbd461267N.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\bf5899ffd7c5a806928951cae770d054513b7604e259ea237d1fcd7cbd461267N.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\bf5899ffd7c5a806928951cae770d054513b7604e259ea237d1fcd7cbd461267N.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2156 wrote to memory of 2132 | N/A | C:\Users\Admin\AppData\Local\Temp\bf5899ffd7c5a806928951cae770d054513b7604e259ea237d1fcd7cbd461267N.exe | C:\Windows\microsofthelp.exe |
| PID 2156 wrote to memory of 2132 | N/A | C:\Users\Admin\AppData\Local\Temp\bf5899ffd7c5a806928951cae770d054513b7604e259ea237d1fcd7cbd461267N.exe | C:\Windows\microsofthelp.exe |
| PID 2156 wrote to memory of 2132 | N/A | C:\Users\Admin\AppData\Local\Temp\bf5899ffd7c5a806928951cae770d054513b7604e259ea237d1fcd7cbd461267N.exe | C:\Windows\microsofthelp.exe |
| PID 2156 wrote to memory of 2132 | N/A | C:\Users\Admin\AppData\Local\Temp\bf5899ffd7c5a806928951cae770d054513b7604e259ea237d1fcd7cbd461267N.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\bf5899ffd7c5a806928951cae770d054513b7604e259ea237d1fcd7cbd461267N.exe
"C:\Users\Admin\AppData\Local\Temp\bf5899ffd7c5a806928951cae770d054513b7604e259ea237d1fcd7cbd461267N.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/2156-0-0x0000000000400000-0x000000000040F000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 7c794c57333d31e8bf8eb814b51ba843 |
| SHA1 | 7637b56f7c32fcf2ab280af36e303bb016181a6e |
| SHA256 | 0c1064d60cdbdbda6d127dc4aa11c2c2158f61ee03045a55c67a4be5256e77a0 |
| SHA512 | e542865a0579a04688c1f952fa3d11aee27be565f834a51785470216a404d287f13c86d3ef38ede6ced6e60d0006e50c0fbb37bae0ff5bbc3049c8b7d040f720 |
memory/2156-6-0x0000000000400000-0x000000000040F000-memory.dmp
memory/2132-8-0x0000000000400000-0x000000000040F000-memory.dmp
memory/2132-10-0x0000000000400000-0x000000000040F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-12 12:15
Reported
2024-11-12 12:17
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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\bf5899ffd7c5a806928951cae770d054513b7604e259ea237d1fcd7cbd461267N.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\bf5899ffd7c5a806928951cae770d054513b7604e259ea237d1fcd7cbd461267N.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\bf5899ffd7c5a806928951cae770d054513b7604e259ea237d1fcd7cbd461267N.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 4428 wrote to memory of 1732 | N/A | C:\Users\Admin\AppData\Local\Temp\bf5899ffd7c5a806928951cae770d054513b7604e259ea237d1fcd7cbd461267N.exe | C:\Windows\microsofthelp.exe |
| PID 4428 wrote to memory of 1732 | N/A | C:\Users\Admin\AppData\Local\Temp\bf5899ffd7c5a806928951cae770d054513b7604e259ea237d1fcd7cbd461267N.exe | C:\Windows\microsofthelp.exe |
| PID 4428 wrote to memory of 1732 | N/A | C:\Users\Admin\AppData\Local\Temp\bf5899ffd7c5a806928951cae770d054513b7604e259ea237d1fcd7cbd461267N.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\bf5899ffd7c5a806928951cae770d054513b7604e259ea237d1fcd7cbd461267N.exe
"C:\Users\Admin\AppData\Local\Temp\bf5899ffd7c5a806928951cae770d054513b7604e259ea237d1fcd7cbd461267N.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.163.245.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 83.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
Files
memory/4428-0-0x0000000000400000-0x000000000040F000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 7c794c57333d31e8bf8eb814b51ba843 |
| SHA1 | 7637b56f7c32fcf2ab280af36e303bb016181a6e |
| SHA256 | 0c1064d60cdbdbda6d127dc4aa11c2c2158f61ee03045a55c67a4be5256e77a0 |
| SHA512 | e542865a0579a04688c1f952fa3d11aee27be565f834a51785470216a404d287f13c86d3ef38ede6ced6e60d0006e50c0fbb37bae0ff5bbc3049c8b7d040f720 |
memory/4428-4-0x0000000000400000-0x000000000040F000-memory.dmp
memory/1732-6-0x0000000000400000-0x000000000040F000-memory.dmp