Analysis Overview
SHA256
32743f83afd0069e55e4f803c38697cbde900b856cbee3ae7596098af4452276
Threat Level: Known bad
The file 32743f83afd0069e55e4f803c38697cbde900b856cbee3ae7596098af4452276 was found to be: Known bad.
Malicious Activity Summary
BlihanStealer
Blihanstealer family
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
2025-02-26 21:38
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-02-26 21:38
Reported
2025-02-26 21:40
Platform
win7-20241010-en
Max time kernel
149s
Max time network
126s
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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\32743f83afd0069e55e4f803c38697cbde900b856cbee3ae7596098af4452276.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\32743f83afd0069e55e4f803c38697cbde900b856cbee3ae7596098af4452276.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\32743f83afd0069e55e4f803c38697cbde900b856cbee3ae7596098af4452276.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2092 wrote to memory of 2832 | N/A | C:\Users\Admin\AppData\Local\Temp\32743f83afd0069e55e4f803c38697cbde900b856cbee3ae7596098af4452276.exe | C:\Windows\microsofthelp.exe |
| PID 2092 wrote to memory of 2832 | N/A | C:\Users\Admin\AppData\Local\Temp\32743f83afd0069e55e4f803c38697cbde900b856cbee3ae7596098af4452276.exe | C:\Windows\microsofthelp.exe |
| PID 2092 wrote to memory of 2832 | N/A | C:\Users\Admin\AppData\Local\Temp\32743f83afd0069e55e4f803c38697cbde900b856cbee3ae7596098af4452276.exe | C:\Windows\microsofthelp.exe |
| PID 2092 wrote to memory of 2832 | N/A | C:\Users\Admin\AppData\Local\Temp\32743f83afd0069e55e4f803c38697cbde900b856cbee3ae7596098af4452276.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\32743f83afd0069e55e4f803c38697cbde900b856cbee3ae7596098af4452276.exe
"C:\Users\Admin\AppData\Local\Temp\32743f83afd0069e55e4f803c38697cbde900b856cbee3ae7596098af4452276.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/2092-0-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2092-7-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2832-9-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 7a644ba1af8eb316d261bb8843c9d146 |
| SHA1 | e01b94f956d5cb46b01abc3c5826a33ac332c346 |
| SHA256 | c848347f3b98ddd885b05a5e836145f134e8d756af5eb4f571df4e6c18ec7b4b |
| SHA512 | 3c9956d7a67800a66613e933c5e56ed1e227cd5df4b9c19314e054f37347ee72787e4704c3350da37c7c1c91737729e38e52cbe7b95849012424679da25c978a |
memory/2832-11-0x0000000000400000-0x000000000040E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-02-26 21:38
Reported
2025-02-26 21:40
Platform
win10v2004-20250217-en
Max time kernel
149s
Max time network
143s
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-1-5-21-22591836-1183090055-1220658180-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\32743f83afd0069e55e4f803c38697cbde900b856cbee3ae7596098af4452276.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\32743f83afd0069e55e4f803c38697cbde900b856cbee3ae7596098af4452276.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\32743f83afd0069e55e4f803c38697cbde900b856cbee3ae7596098af4452276.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 4844 wrote to memory of 1152 | N/A | C:\Users\Admin\AppData\Local\Temp\32743f83afd0069e55e4f803c38697cbde900b856cbee3ae7596098af4452276.exe | C:\Windows\microsofthelp.exe |
| PID 4844 wrote to memory of 1152 | N/A | C:\Users\Admin\AppData\Local\Temp\32743f83afd0069e55e4f803c38697cbde900b856cbee3ae7596098af4452276.exe | C:\Windows\microsofthelp.exe |
| PID 4844 wrote to memory of 1152 | N/A | C:\Users\Admin\AppData\Local\Temp\32743f83afd0069e55e4f803c38697cbde900b856cbee3ae7596098af4452276.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\32743f83afd0069e55e4f803c38697cbde900b856cbee3ae7596098af4452276.exe
"C:\Users\Admin\AppData\Local\Temp\32743f83afd0069e55e4f803c38697cbde900b856cbee3ae7596098af4452276.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 | 150.171.28.10:443 | g.bing.com | tcp |
| US | 150.171.28.10:443 | g.bing.com | tcp |
| US | 150.171.28.10:443 | g.bing.com | tcp |
| US | 150.171.28.10:443 | g.bing.com | tcp |
Files
memory/4844-0-0x0000000000400000-0x000000000040E000-memory.dmp
memory/4844-4-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 7a644ba1af8eb316d261bb8843c9d146 |
| SHA1 | e01b94f956d5cb46b01abc3c5826a33ac332c346 |
| SHA256 | c848347f3b98ddd885b05a5e836145f134e8d756af5eb4f571df4e6c18ec7b4b |
| SHA512 | 3c9956d7a67800a66613e933c5e56ed1e227cd5df4b9c19314e054f37347ee72787e4704c3350da37c7c1c91737729e38e52cbe7b95849012424679da25c978a |
memory/1152-7-0x0000000000400000-0x000000000040E000-memory.dmp