Analysis Overview
SHA256
2230604899758d0f4fe642806176b0b9bca6f740a5736cee8e7b91a7b8d62fef
Threat Level: Known bad
The file 2230604899758d0f4fe642806176b0b9bca6f740a5736cee8e7b91a7b8d62fef was found to be: Known bad.
Malicious Activity Summary
BlihanStealer
Blihanstealer family
Executes dropped EXE
Deletes itself
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
2025-02-26 20:49
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-02-26 20:49
Reported
2025-02-26 20:51
Platform
win7-20240903-en
Max time kernel
149s
Max time network
122s
Command Line
Signatures
BlihanStealer
Blihanstealer family
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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\2230604899758d0f4fe642806176b0b9bca6f740a5736cee8e7b91a7b8d62fef.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\2230604899758d0f4fe642806176b0b9bca6f740a5736cee8e7b91a7b8d62fef.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\2230604899758d0f4fe642806176b0b9bca6f740a5736cee8e7b91a7b8d62fef.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3020 wrote to memory of 3032 | N/A | C:\Users\Admin\AppData\Local\Temp\2230604899758d0f4fe642806176b0b9bca6f740a5736cee8e7b91a7b8d62fef.exe | C:\Windows\microsofthelp.exe |
| PID 3020 wrote to memory of 3032 | N/A | C:\Users\Admin\AppData\Local\Temp\2230604899758d0f4fe642806176b0b9bca6f740a5736cee8e7b91a7b8d62fef.exe | C:\Windows\microsofthelp.exe |
| PID 3020 wrote to memory of 3032 | N/A | C:\Users\Admin\AppData\Local\Temp\2230604899758d0f4fe642806176b0b9bca6f740a5736cee8e7b91a7b8d62fef.exe | C:\Windows\microsofthelp.exe |
| PID 3020 wrote to memory of 3032 | N/A | C:\Users\Admin\AppData\Local\Temp\2230604899758d0f4fe642806176b0b9bca6f740a5736cee8e7b91a7b8d62fef.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2230604899758d0f4fe642806176b0b9bca6f740a5736cee8e7b91a7b8d62fef.exe
"C:\Users\Admin\AppData\Local\Temp\2230604899758d0f4fe642806176b0b9bca6f740a5736cee8e7b91a7b8d62fef.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/3020-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | ecc45f9e71c3430d1481bea13ad44f84 |
| SHA1 | dc2ce8c12b6c43656b359fd6e1cb27b7d0ad85f7 |
| SHA256 | 9af9bca0be1ae44e01974fe7a3ab3d832e9de3a0efe34c3d25e50ca342107409 |
| SHA512 | b3667aa5eec11e528f78ff9b1b9190ef7bab79652c9f88dbb140ce37f204bf9d900d46286e351483f747709c3b86fbc564a103da41358a521d6f9d90a5b25683 |
memory/3020-7-0x0000000000400000-0x000000000040E000-memory.dmp
memory/3032-10-0x0000000000400000-0x000000000040E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-02-26 20:49
Reported
2025-02-26 20:51
Platform
win10v2004-20250217-en
Max time kernel
149s
Max time network
150s
Command Line
Signatures
BlihanStealer
Blihanstealer family
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-1-5-21-925314154-1797147466-1467878628-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\2230604899758d0f4fe642806176b0b9bca6f740a5736cee8e7b91a7b8d62fef.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\2230604899758d0f4fe642806176b0b9bca6f740a5736cee8e7b91a7b8d62fef.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\2230604899758d0f4fe642806176b0b9bca6f740a5736cee8e7b91a7b8d62fef.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 4732 wrote to memory of 2940 | N/A | C:\Users\Admin\AppData\Local\Temp\2230604899758d0f4fe642806176b0b9bca6f740a5736cee8e7b91a7b8d62fef.exe | C:\Windows\microsofthelp.exe |
| PID 4732 wrote to memory of 2940 | N/A | C:\Users\Admin\AppData\Local\Temp\2230604899758d0f4fe642806176b0b9bca6f740a5736cee8e7b91a7b8d62fef.exe | C:\Windows\microsofthelp.exe |
| PID 4732 wrote to memory of 2940 | N/A | C:\Users\Admin\AppData\Local\Temp\2230604899758d0f4fe642806176b0b9bca6f740a5736cee8e7b91a7b8d62fef.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2230604899758d0f4fe642806176b0b9bca6f740a5736cee8e7b91a7b8d62fef.exe
"C:\Users\Admin\AppData\Local\Temp\2230604899758d0f4fe642806176b0b9bca6f740a5736cee8e7b91a7b8d62fef.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 150.171.28.10:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
Files
memory/4732-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | ecc45f9e71c3430d1481bea13ad44f84 |
| SHA1 | dc2ce8c12b6c43656b359fd6e1cb27b7d0ad85f7 |
| SHA256 | 9af9bca0be1ae44e01974fe7a3ab3d832e9de3a0efe34c3d25e50ca342107409 |
| SHA512 | b3667aa5eec11e528f78ff9b1b9190ef7bab79652c9f88dbb140ce37f204bf9d900d46286e351483f747709c3b86fbc564a103da41358a521d6f9d90a5b25683 |
memory/4732-6-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2940-7-0x0000000000400000-0x000000000040E000-memory.dmp