Analysis Overview
SHA256
287a09036e3e773ae9fe9721a1650be793c34b4804ee4636c05c1795e890a6a7
Threat Level: Known bad
The file 287a09036e3e773ae9fe9721a1650be793c34b4804ee4636c05c1795e890a6a7 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
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 21:02
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-02-26 21:02
Reported
2025-02-26 21:05
Platform
win7-20240903-en
Max time kernel
149s
Max time network
120s
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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\287a09036e3e773ae9fe9721a1650be793c34b4804ee4636c05c1795e890a6a7.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\287a09036e3e773ae9fe9721a1650be793c34b4804ee4636c05c1795e890a6a7.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\287a09036e3e773ae9fe9721a1650be793c34b4804ee4636c05c1795e890a6a7.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2288 wrote to memory of 2156 | N/A | C:\Users\Admin\AppData\Local\Temp\287a09036e3e773ae9fe9721a1650be793c34b4804ee4636c05c1795e890a6a7.exe | C:\Windows\microsofthelp.exe |
| PID 2288 wrote to memory of 2156 | N/A | C:\Users\Admin\AppData\Local\Temp\287a09036e3e773ae9fe9721a1650be793c34b4804ee4636c05c1795e890a6a7.exe | C:\Windows\microsofthelp.exe |
| PID 2288 wrote to memory of 2156 | N/A | C:\Users\Admin\AppData\Local\Temp\287a09036e3e773ae9fe9721a1650be793c34b4804ee4636c05c1795e890a6a7.exe | C:\Windows\microsofthelp.exe |
| PID 2288 wrote to memory of 2156 | N/A | C:\Users\Admin\AppData\Local\Temp\287a09036e3e773ae9fe9721a1650be793c34b4804ee4636c05c1795e890a6a7.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\287a09036e3e773ae9fe9721a1650be793c34b4804ee4636c05c1795e890a6a7.exe
"C:\Users\Admin\AppData\Local\Temp\287a09036e3e773ae9fe9721a1650be793c34b4804ee4636c05c1795e890a6a7.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/2288-3-0x00000000001B0000-0x00000000001BE000-memory.dmp
memory/2288-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | a5e76af347a273353795f307ad6c37b4 |
| SHA1 | dfea46bb2cac2a5ef2c887d71aa43ecb15b6cb55 |
| SHA256 | 9148b042fe1796ac82eb639e5aee5c730a366084a60f54ca6fcc7e46abfab4f8 |
| SHA512 | 7f5c13656bf41ffe4ee9d98684b7f7c0f2585f0ccbcb37ffd22e452a8c07ad2e5573ec82867c7b18f5c69ca6310db4c0381d00739c73f1edb798bb0b29a21a85 |
memory/2156-9-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2156-11-0x0000000000400000-0x000000000040E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-02-26 21:02
Reported
2025-02-26 21:05
Platform
win10v2004-20250217-en
Max time kernel
149s
Max time network
129s
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-1-5-21-1479699283-3000499823-2337359760-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\287a09036e3e773ae9fe9721a1650be793c34b4804ee4636c05c1795e890a6a7.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\287a09036e3e773ae9fe9721a1650be793c34b4804ee4636c05c1795e890a6a7.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\287a09036e3e773ae9fe9721a1650be793c34b4804ee4636c05c1795e890a6a7.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 960 wrote to memory of 1928 | N/A | C:\Users\Admin\AppData\Local\Temp\287a09036e3e773ae9fe9721a1650be793c34b4804ee4636c05c1795e890a6a7.exe | C:\Windows\microsofthelp.exe |
| PID 960 wrote to memory of 1928 | N/A | C:\Users\Admin\AppData\Local\Temp\287a09036e3e773ae9fe9721a1650be793c34b4804ee4636c05c1795e890a6a7.exe | C:\Windows\microsofthelp.exe |
| PID 960 wrote to memory of 1928 | N/A | C:\Users\Admin\AppData\Local\Temp\287a09036e3e773ae9fe9721a1650be793c34b4804ee4636c05c1795e890a6a7.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\287a09036e3e773ae9fe9721a1650be793c34b4804ee4636c05c1795e890a6a7.exe
"C:\Users\Admin\AppData\Local\Temp\287a09036e3e773ae9fe9721a1650be793c34b4804ee4636c05c1795e890a6a7.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
Files
memory/960-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | a5e76af347a273353795f307ad6c37b4 |
| SHA1 | dfea46bb2cac2a5ef2c887d71aa43ecb15b6cb55 |
| SHA256 | 9148b042fe1796ac82eb639e5aee5c730a366084a60f54ca6fcc7e46abfab4f8 |
| SHA512 | 7f5c13656bf41ffe4ee9d98684b7f7c0f2585f0ccbcb37ffd22e452a8c07ad2e5573ec82867c7b18f5c69ca6310db4c0381d00739c73f1edb798bb0b29a21a85 |
memory/1928-7-0x0000000000400000-0x000000000040E000-memory.dmp
memory/960-6-0x0000000000400000-0x000000000040E000-memory.dmp
memory/1928-8-0x0000000000400000-0x000000000040E000-memory.dmp